Answers
Answer :
(a) The name of gas given off in the reaction is hydrogen gas.
(b) When we take the test tube containing zinc and sulfuric acid near a candle or a burner, we hear a pop sound. This shows the presence of hydrogen gas.
(c) The products formed in this reaction are zinc sulfate and hydrogen gas.
(d) When the evolution of hydrogen gas will stop.
(e) The word equation for this reaction is:
Zinc + Sulfuric acid [tex]\rightarrow[/tex] Zinc sulfate +Hydrogen gas
Explanation:
As we know that when an acid reacts with a metal, then a salt and hydrogen gas are formed.
As per question, when sulfuric acid reacts with zinc metal then zinc sulfate and hydrogen gas are formed.
The word equation for this reaction is:
Zinc + Sulfuric acid [tex]\rightarrow[/tex] Zinc sulfate +Hydrogen gas
The balanced chemical reaction is as follows:
[tex]Zn(s)+H_2SO_4(aq)\rightarrow ZnSO_4(aq)+H_2(g)[/tex]
In this reaction, zinc metal displaces the hydrogen form sulfuric acid.
When we take the test tube containing zinc and sulfuric acid near a candle or a burner, we hear a pop sound. This shows the presence of hydrogen gas.
Related Questions
If Uranium-240 emits an alpha particle, what does it transmutate into?
A)Thorium -236
B)Thorium-238
C)Plutonium-244
D)Uranium-235
Answers
Answer:
d
Explanation:
What are atoms made of?
1.
Protons and electrons in a nucleus like the sun with neutrons zipping around the
nucleus like planets
2.
Neutrons and electrons in a nucleus like the sun with protons zipping around the
nucleus like planets
3.
Protons and neutrons in a nucleus like the sun with electrons zipping around the
nucleus like planets around the sun
What do you call elemente with th
Answers
Answer:
3
Explanation:
Atoms are made of 3 parts.
ProtonsElectronsNeutrons- The protons and Neutrons form together creating a sun, or nucleus at the center
- The electrons orbit this sun like planets.
The element with Th is Thorium. It is a metallic chemical element that when exposed to air, hardens.
What is a decomposition reaction?
A. Two reactants break apart and combine as new products
B. One reactant break down to form more than one product
C. One reactant replaces an element in another reactant
D. Two reactants combine to form a single ew product.
(The answer is B)
Answers
Answer:
According to A pex, the answer is B.
Explanation:
Because its right.
When one reactant breaks down to form more than one product is a decomposition reaction. Therefore, option (B) is correct.
What is a decomposition reaction?A decomposition reaction can be described as a reaction in which a compound breaks down into two or more simpler compounds. The general form to represent a decomposition reaction is:
AB → A + B
Most decomposition reactions need input energy in the form of light, heat, or electricity.
Binary compounds can be described as compounds made of just two elements. The simplest type of decomposition reaction is when a binary compound dissociated into its elements. For example, Mercury (II) oxide decomposes when heated to form mercury and oxygen gas.
2HgO(s) → 2Hg (l) + O₂(g)
A reaction is a decomposition reaction even when one or more of the products are compounds. For example, calcium carbonate decomposes into carbon dioxide gas and calcium oxide.
[tex]CaCO_3(s) \longrightarrow CaO(s)+CO_2(g)[/tex]
Learn more about decomposition reactions, here:
https://brainly.com/question/16987748
#SPJ2
What is the basic unit of energy?
Answers
Answer:
The basic unit of energy is the joule, also known as SI unit
Explanation:
Traits are passed from parents to offspring. These traits are determined by
1. chromosomes, located on genes, found in the nucleus
2. genes, located on chromosomes, found in the nucleus
3. chromosomes, located on genes, found in the ribosomes
4. genes, located on chromosomes, found in the ribosomes
Answers
The traits that are transferred from the parents to the offspring during reproduction are determined by genes, located on chromosomes, found in the nucleus.
During reproduction, there is a fusion of;
male gametefemale gameteThis leads to the formation of offspring. There is a transfer of traits from the parents to the offspring.
Hence, the traits that are transferred from the parents to the offspring during reproduction are determined by genes, located on chromosomes, found in the nucleus.
Learn more about genes: https://brainly.com/question/787658
Answer:?
Explanation:
12. How many grams of glucose (C6H1206) is produced if 17.3 mol of H20 is reacted according to this
balanced chemical equation? 6CO2 + 6H20 - C6H12O6 + 602
13. Nitroglycerin (C3H5(ONO2)3] is made by reacting nitric acid (HNO3) with glycerol [C3H5(OH)3]
according to this reaction:
C3H5(OH)3 + 3HNO3 - C3H5(ONO2)3 + 3H20
If 87.4 g of HNO3 is reacted with excess glycerol, what mass of nitroglycerin can be made?
Answers
Answer:
1. 17.3 MOLES OF WATER WILL PRODUCE 518.4 G OF GLUCOSE.
2. 87.4 G OF HNO3 WILL PRODUCE 7.86 G OF NITROGLYCERIN WHEN REACTED WITH EXCESS GLYCEROL.
Explanation:
1. How many grams of glucose is produced from 17.3 mole of water?
Equation:
6CO2 + 6H20 ------> C6H12O6 + 6O2
From the reaction, 6 moles of carbon dioxide reacts with 6 moles of water to produce 1 mole of glucose
So therefore,
6 moles of water = 1 mole of glucose
Since 17.3 mole of water was used, we can first calculate the number of moles of glucose produced:
Then, we have:
6 moles of water = 1 mole of glucose
17.3 moles of water = ( 17.3 * 1/ 6) moles of glucose
= 2.883 moles of glucose
So we say 17.3 moles of water produces 2.883 moles of glucose
At standard conditions, 1 mole of a substance is its molar mass
Molar mass of water = 18 g/mol
Molar mass of glucose = 180 g/mol
From the reaction:
17.3 moles of water produces 2.883 moles of glucose
17.3 * 18 g of water produces 2.833 * 180 g of glucose
= 518.94 g of glucose.
From 17.3 mole of water, 518.4 g of glucose will be produced.
2.
C3H5(OH)3 + 3HNO3 -------> C3H5(ONO2)3 + 3H20
3 moles of HNO3 reacts to produce 1 mole of nitroglycerin
Molar mass of HNO3 = ( 1 + 14 + 16*3) = 63 g/mol
Molar mass of nitroglycerin = ( 12 *3 + 1 *5 + 16*6 + 14*3) = 179 g/mol
3 moles of HNO3 = 1 mole of nitroglycerin
3 * 63 g of HNO3 = 179 g of nitroglycerin
if 87.4 g of HNO3 were to be reacted, we have:
189 g of HNO3 = 179 g of nitroglycerin
87.4 g of HNO3 = ( 87.4 * 179 / 189) of nitroglycerin
= 7.86 g of nitroglycerin
So therefore, 87.4 g of HNO3 will produce 7.86 g of nitroglycerin when reacted with excess glycerol.
5)
A battery is connected to a motor. The battery releases enough energy to perform 200 J of work, but the motor produces only 90 J.
Why
The battery has a leak
Some energy is released as heat.
The motor is connected improperly.
The motor is connected to the battery in parallel
HELP
Answers
Answer:
some energy is released as heat
Answer:
Some energy is released as heat.
Explanation:
hope this helps :)
Write the name of the chemical missing in this equation
calcium carbonate + hydrochloric acid --> calcium chloride + water +............
A)hydrogen
B)oxygen
C)nitrogen
D)carbon dioxide
Answers
Answer:
D
Explanation:
the calcium reacts with the chloride in the hydrochloric making calcium chloride.
the hydro in hydrochloric becomes water leaving us with carbonate which turns into carbon dioxide.
(in simple terms)
Eva wants to overcome her internalized racism. Which action will help her do so ?
OA. She should make friends only with people like her so that she can avoid hearing hurtful comments.
B. She should take an active role in identifying people who can serve as her role models.
OShe should blame others for making her feel the way she does.
OD. All of the above
Answers
THE OTHER PERSON IS WRONG TRUST ME
THE ANSWER IS C. I TOOK THE TEST MYSELF AND GOT A %100.
3. How many moles of each type of atom are in 1.0 mol of C6H12O6?
4. How many molecules are in 16.8 mol of H2O?
5. How many moles are present in 100.0 g of Al?
Answers
5) 26.981538 moles
In a single displacement reaction between sodium phosphate and barium, how much of each product (in grams) will be formed from 10.0 grams of barium?
Answers
Answer:
A. 3.36g of Na.
B. 14.62g of Ba3(PO4)2.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is given below:
3Ba + 2Na3PO4 → 6Na + Ba3(PO4)2
Next, we shall determine the mass of Ba that reacted and the mass of Na and Ba3(PO4)2 produced from the equation.
This is illustrated below:
Molar Mass of Ba = 137g/mol
Mass of Ba from the balanced equation = 3 x 137 = 411g
Molar mass of Na = 23g/mol
Mass of Na from the balanced equation = 6 x 23 = 138g
Molar mass of Ba3(PO4)2 = (3 x 137) + 2[31 + (4x16)] = 411 + 2[31 + 64] = 601g/mol
Mass of Ba3(PO4)2 from the balanced equation = 1 x 601 = 601g
Summary:
From the balanced equation above,
411g of Ba reacted to produce 138g of Na and 601g of Ba3(PO4)2.
A. Determination of the mass of Na produced by reacting 10g of Ba.
From the balanced equation above,
411g of Ba reacted to produce 138g of Na.
Therefore, 10g of Ba will react to produce = (10 x 138)/411 = 3.36g of Na.
Therefore, 3.36g of Na is produced.
B. Determination of the mass of Ba3(PO4)2 produced by reacting 10g of Ba.
From the balanced equation above,
411g of Ba reacted to produce 601g of Ba3(PO4)2.
Therefore, 10g of Ba will react to produce = (10 x 601)/411 = 14.62g of Ba3(PO4)2.
Therefore, 14.62g of Ba3(PO4)2 is produced.
What is the study of how matter and energy interact? A. Biology B. Chemistry C. Planetary science D. Physics
Answers
Answer:
Chemistry
Explanation:
Chemistry is the study of matter, its properties, how and why substances combine or separate to form other substances, and how substances interact with energy
Answer:
D. Physics
Explanation:
First, let's define all the answer choices.
Biology: Biology is the study of life and living things. Biology deals with the function, growth, origin and more of organisms.
Chemistry: Chemistry is the study of matter, elements, atoms, compounds, molecules and more. Chemistry is also concerned with chemical reactions.
Planetary science: Planetary science is basically the study of planets. This is the study of planets, moons and planetary systems.
Physics: Physics is the study of matter, energy, and their interactions. This helps us to explain and understand things that happen in the universe.
The best choice is D. Physics. Physics is the study of how matter and energy interact.
PLZ HELP!! I WILL GIVE BRAINLIEST!! 50+PTS!! PLZ HELP!!!! In an exothermic reaction at equilibrium, what is the effect of lowering the temperature? A. The reaction makes more products. B. The reaction makes more reactants. C. The reaction is unchanged.
Answers
Answer:
A. your reaction makes more products.
Explanation:
This is a fun question dealing with idea of Le Chatelier's principle.
In an exothermic reaction, you produce heat. This means that heat will act as a product (or be on the product side).
Suppose there's an imaginary equation:
A + B -----> C (Now if I lower the amount of B, the equilibrium will shift to left to make up the lost B, or to bring the system back to equilibrium)
Apply the same concept as above below:
A + B -------> C + Heat (as I mentioned, since this is exothermic reaction heat is written as product, so if you lower the temperature, which means basically lower the heat, the reaction will shift towards right to make up the lost heat, in this process you will make extra C which is products. Thus, your reaction makes more products.
Answer:
reaction makes more product
what radius (mm) must a steel (iron) ball bearing have if it is to have a mass of 3.25g? density of iron = 7.86g/cm3 V=4/3 pie r3
Answers
Answer:
Radius of the steel ball is 4.6mm
Explanation:
Hello,
To find the radius of the steel, we'll have to calculate it from it's volume which can be gotten from the density of the material.
Data;
Mass = 3.25g
Density = 7.86g/cm³
Density = mass / volume
Volume = mass / density
Volume = 3.25 / 7.86
Volume = 0.413cm³
Volume of a steel = 4/3πr³
0.413 = 4/3 × π × r³
0.413 = 1.33 × 3.14 × r³
0.413 = 4.1762r³
r³ = 0.413 / 4.1762
r³ = 0.099
Take the cube root of both sides
r = 3√(0.099)
r = 0.46cm
From metrics table
1cm = 10mm
0.46cm = x mm
x = (0.46 × 10)
x = 4.6mm
The radius of the steel ball is 4.6mm
eeeeeeeeeeeeeeeeeeeee question in picture
Answers
Answer:B
Explanation:
Answer:
Pretty sure it is either B or C.
Explanation:
Hope this helps. LOL.
convert 5.68g of NaCl to moles
Answers
Answer:
The answer is 0.10026903242265733
Consider this hydrocarbon. A hexagon. Is this an aromatic hydrocarbon? Why or why not? Yes, because the carbon chain is made up of single bonds. Yes, because the carbon chain is ring shaped. No, because the carbon chain is composed of only a single ring. No, because the carbon chain has no double bonds.
Answers
Answer:
C. No, because the carbon chain is composed of only a single ring.
Polycyclicity, having more than a single ring, is a property of only aromatic hydrocarbons. Therefore, if the hydrocarbon is not polycyclic, it is non-aromatic
Explanation:
Cyclic Hydrocarbons
These are organic compounds which are cyclic in structure. The compound cyclohexane involves a ring of six carbon atoms, each of which is also bonded to two hydrogen atoms
Aromatic hydrocarbons are cyclic ring organic compound which are based on the benzene ring structure.
A. If the hexagon contains single bonds, it is non-aromatic.
B. No. Having a ring shape does not on its own determine the aromaticity of a hydrocarbon.
C. Polycyclicity, having more than a single ring, is a property of only aromatic hydrocarbons. Therefore, if the hydrocarbon is not polycyclic, it is non-aromatic
D. Having double bonds within a ring is not a criteria for being aromatic. Both aromatic and non-aromatic hydrocarbons have double bonds within their rings. However, aromatic hydrocarbons have alternate double and single bonds within their 6-carbon ring structure.
Note: Since the structure of the required hydrocarbon is not shown, the explanation contains attachments of hexagonal structures of three hydrocarbons; one non-aromatic and the other two are aromatic. Cyclohexane is non-aromatic while Benzene and the polycyclic compounds are aromatic.
If a specimen exhibited 1/8th of the original carbon-14, how many years has it been since that specimen was alive?
Answers
What do acids do in solution?
O A. They increase the pH.
O B. They form hydroxide ions.
O C. They increase the [H").
O D. They dissociate into salts.
Answers
Answer:
C.
Explanation:
The increase the [H+] (concentration of H+ ions)
However, they decrease the pH if acids are added to any solution. Since they have more [H+] ions, they increase their conc. in the solution
I'm completely lost and cant find the answer
Answers
Answer:
Option B. 4.5g
Explanation:
The balanced equation for the reaction is given below:
2Na + 2H2O —> 2NaOH + H2
Next, we shall determine the mass of Na and the mass of H2O that reacted and the mass of H2 produced from the balanced equation. This is illustrated below:
Molar mass of Na = 23g/mol
Mass of Na from the balanced equation = 2 x 23 = 46g
Molar mass of H2O = (2.02x1) + 16 = 18.02g/mol
Mass of H2O from the balanced equation = 2 x 18.02 = 36.04g
Molar mass of H2 = 2.02 x 1 = 2.02g/mol.
Mass of H2 from the balanced equation = 1 x 2.02 = 2.02g
From the balanced equation above,
46g of Na reacted with 36.04g of H2O to produce 2.02g of H2.
Next, we shall determine the limiting reactant. This is illustrated below:
From the balanced equation above,
46g of Na reacted with 36.04g of H2O.
Therefore, 120g of Na will react with = (120 x 36.04)/46 = 94.02g of H2O.
From the calculations made above, we can see that it will take a high mass of H2O i.e 94.02g than what was given i.e 80g to react completely with 120g of Na. Therefore, H2O is the limiting reactant and Na is the excess reactant.
Finally, we shall determine the mass of H2 produced from the reaction as follow:
The limiting reactant will be used in this case as it will give the maximum yield of H2 since all of it is used up in the reaction.
From the balanced equation above, 36.04g of H2O reacted to produce 2.02g of H2.
Therefore, 80g of H2O will react to produce = (80 x 2.02)/36.04 = 4.5g of H2.
Therefore, 4.5g of H2 is produced from the reaction.
1. Chlorobenzene, C6H5C1, is used in the production of chemicals such as aspirin
and dyes. One way that chlorobenzene is prepared is by reacting benzene, C6H6.
with chlorine gas according to the following BALANCED equation.
C6H6 (1) + Cl2 (g) → C6H5Cl (s) + HCI (g)
Answers
Do household items tend to be more acidic or basic? Are you surprised? Why or why not?
Answers
Answer:
they tend to be base
Explanation:
this because when they are manufactured they dont tend to use acid solution
Does this make a reaction? Because both products are soluble.
Answers
Answer:
Yes.
Explanation:
It will react. Because they are compounds
8.
A sheep owner is caring for a sick lamb that has a severe navel infection. He gives the
lamb 2 cc of Ampicillin 4 times a day for three days. If each cc contains 125 mg of Ampicillin what is
the total number of mg of Ampicillin given to the lamb?
Answers
Answer:
900 mg
Explanation:
Please say which is the anode (oxidation) and which is the cathode (reduction)
2H+ + 2e- ➖> H2 (g)
2I- ➖> I2 + 2e-
Answers
Explanation:
1st one will be cathodic reaction and reduction will occur since electrons are being gained and hydrogen goes from +1 to zero oxidation state.
2nd one will be anodix reaction and oxidation will take place because Iodide ion's oxidation number increases from -1 to 0
please help asp its timed
How do radio waves compare to visible light in terms of the energy?
Radio waves carry more energy
Radio waves carry less energy
Radio waves and visible light carry the same energy
Neither radio waves nor visible light carry energy.
Answers
Answer:
Radio waves and visible light have many different properties
Explanation:
Radio waves have less energy since it's waves are stretched out really long. the longer the light waves, the lower the energy, and since radio waves have more stretched out waves than visible light, the radio waves carry less energy.
10. How any grams of N He are required to produce 120 grams of HNO3, assuming H2O2 is present in
excess?
N2H4 + 7 H2O2 → 2 HNO3 + 8 H2O
H2O2
N2H4
32
HNO3
63
H2O
18
34
Molar Mass
(g/mol)
Answers
Answer:
30.48g of N2H4
Explanation:
Step 1:
The balanced equation for the reaction. This is given below:
N2H4 + 7H2O2 → 2HNO3 + 8H2O
Step 2:
Determination of the mass of N2H4 that reacted and the mass HNO3 produced from the balanced equation. This is illustrated below:
Molar mass of N2H4 = (14x2) + (4x1) = 32g/mol
Mass of N2H4 from the balanced equation = 1 x 32 = 32g
Molar Mass of HNO3 = 1 + 14 + (16x3) = 63g/mol
Mass of HNO3 from the balanced equation = 2 x 63 = 126g
Summary:
From the balanced equation above,
32g of N2H4 reacted to produce 126g of HNO3.
Step 3:
Determination of the mass of N2H4 required to produce 120g of HNO3. This is illustrated below:
From the balanced equation above,
32g of N2H4 reacted to produce 126g of HNO3.
Therefore, Xg of N2H4 will react to produce 120g of HNO3 i.e
Xg of N2H4 = (32 x 120)/126
Xg of N2H4 = 30.48g
Therefore, 30.48g of N2H4 is required to produce 120g of HNO3.
SOMEONE PLS HELP ITS FOR A TEST!!
4. An ion is an atom that has lost or gained protons.
O True
O False
5. Non-metals are on the right side of the periodic table and they tend to GAIN electrons in ionic bonds.
O True
O False
Answers
Explanation:
4=true
5. true
hope this helps. good luck with your test.
CHEM PLZ HELP
2NaHCO3(s) → Na2CO3(s)+CO2(g)+H2O(ℓ)
If the chemical reaction above is occurring, we would likely observe...
Question 14 options:
Increase in CO2 (g) over time.
No NaHCO3 (s) will be left after a time.
Increase in NaHCO3 (s) over time.
Decrease in Na2 CO3 (s) over time.
Answers
Answer:
Increase in CO2 (g) over time.
No NaHCO3 (s) will be left after a time
Explanation:
The reaction, shown below;
2NaHCO3(s) → Na2CO3(s)+CO2(g)+H2O(ℓ) is a decomposition reaction. A decomposition reaction is a kind of chemical reaction in which a given chemical specie breaks up to give other chemical species. Decomposition may be induced by heat or light.
Usually, there is only one reactant in a decomposition reaction; the specie that disintegrates into the products. This reactant usually decreases in concentration steadily because it is converted into products. This is why the mass of NaHCO3(s) in the system continues to decrease steadily until it finally falls to zero.
Conversely, the concentration (for aqueous) or volume (for gases) or mass (for solid) products of the reaction increases steadily as the reaction progresses. This explains why the volume of CO2 in the system will steadily increase over time.
A sample of hydrogen peroxide (H202) has 2.0 grams of hydrogen (H) and 32 grams of oxygen (O). What is the percent composition of hydrogen peroxide
Answers
Answer:
O = 94.117%
H = 5.882%
Explanation:
Hydrogen peroxide (H202) Molar Mass = 34g
OH 1- 17g/mol
H 1+ = 1g/mol
O = 16g/mol
2 Grams H
32 grams O
Percentage composition of Hydrogen peroxide
O = 32/34 = 94.117%
H = 2/34 = 5.882%
