Answer:
It’s 10
Explanation:
I looked it up
To solve this we must be knowing each and every concept related to energy and its calculations. Therefore, at point b, 10joule of energy is present.
What is energy?Energy is defined in physics as the ability to accomplish work or heat items. It's a scalar measurement with magnitude but no direction. Energy is maintained, which implies it can change forms but is not generated or destroyed. potential energy transforms into kinetic energy.
One type of energy can be transferred into another without breaking a thermodynamic rule. Not all of these energy sources are equally beneficial in practical applications. At point a the object has 30 joules of energy. At point b, 10joule of energy is present.
Therefore, at point b, 10joule of energy is present.
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3.
Describe how photosynthesis is
related to respiration.
Answer: Photosynthesis converts carbon dioxide and water into oxygen and glucose. ... Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by-products, and ATP is the energy that is transformed from the process.
3) How many grams of calcium hydroxide are necessary to create 49.5 mL of a 1.55 M solution?
Answer:
5.68g
Explanation:
Air in a closed cylinder is heated from 15°C to 36°C. If the initial pressure is 1000 torr, determine what is the final pressure? *
Answer:
1072 torr
Explanation:
To answer this problem we can use Gay-Lussac's law, which states:
P₁T₂=P₂T₁Now we convert the given temperatures into K:
T₁ = 15°C ⇒ 15+273.16 = 288.16 KT₂ = 36°C ⇒ 36+273.16 = 309.16 KWe input the data:
1000 torr * 309.16 K = P₂ * 288.16 KAnd solve for P₂:
P₂ = 1072 torrNEED HELP ON THIS NOW PLEASE
Answer:
A. Bees bringing pollen from the flower of one plant to the flower of another plant.
Explanation:
Genetic diversity in organisms is enhanced by the process of sexual reproduction due to the meiotic process that the participant organisms undergo to produce gametes. A process unique to meiosis called CROSSING OVER ensures that the alleles of genes are recombined in the GAMETE or sex cells.
According to this question, POLLINATION, which is the transfer of pollen from a male flower to a female one, will lead to sexual reproduction via fertilization. However, a cross-pollination, which requires a pollinator like the bees in this question will ensure the most genetic diversity among the offsprings.
Which carbohydrate strengthens plant cells?
A. glucose
B. glycogen
C. cellulose
D. lactose
Answer: Its C
Explanation:
An element cannot be broken down into other substances by chemical or physical means. But you can still split a sample of an element into smaller pieces. For example, a piece of aluminum foil can be cut in half and then in half again, and all of the pieces will still be aluminum.What do you think will eventually happen if you could continue dividing that piece of aluminum foil
You will reach the smallest possible piece of the aluminum.
You will divide the aluminum into two smaller elements.
You will continue dividing the aluminum forever into smaller and smaller pieces.
You will reach a point at which there is no matter left.
Answer:
You will reach the smallest possible piece of the aluminum.
Explanation:
You will not be able to physically separate the aluminum into two smaller elements; aluminum is already a pure elemental substance. It will not divide forever, at some point it will be as small as you can possibly make it. However, you won't be able to erase the matter completely -- it will just become very very small!
what is the mass of 1mol of chlorine ions?
Answer:
71g
Explanation:
i think thats right?
One mole of chlorine would be 71 g unless they said "1 mole of chlorine ATOMS".
upal.
Consider the elements sodium, aluminium, silicon and sulphur. Which one will form
an oxide that will give a pH of less than 7 when in solution?
Answer:
sodium
Explanation:
this is because sodium is neutral ....hence the pH formed will be 7
The element sodium will form an oxide that will give a pH of less than 7 when in solution.
What is element?Any compound that could be broken down into simpler chemicals by regular chemical processes is referred to as a chemical element.
What is pH?pH is a measurement of how acidic or basic an aqueous solution is in relation to other liquids.
Sodium is neutral in nature that's why the element sodium will form an oxide that will give a pH of less than 7 when in solution.
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Determine if each compound shown is soluble or insoluble.
Drag the appropriate items to their respective bins.
The solubility rules shows which compounds are soluble in water.
According to the solubility rules, all chlorides and bromides are soluble in water except those of silver and mercury. This explains why most of the chlorides and bromides are designated as "soluble".
All nitrates are also soluble in water. The hydroxide of copper is not soluble in water as well as the sulfates of divalent group II elements.
In summary, the soluble and insoluble elements are shown as follows;
1) Soluble
FeCl3KNO3KClCu(NO3)2NaClKBr2) Insoluble
BaSO4Cu(OH)2AgClLearn more: https://brainly.com/question/24846690
I am an element that has 4 valence electrons that are present in my third energy level. Who am I?
Answer:
silicone (Si) is the answer
the eye is connected to the brain by nerves.
A. True
B. False
the answer is A..which is true
How many kilograms of phosphorous are in a sample containing 1.00E31 phosphorous atoms?
Answer: [tex]5.15\times 10^5kg[/tex]
Explanation:
According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number of particles.
To calculate the number of moles, we use the equation:
Putting in the values we get:
[tex]\text{Number of moles}=\frac{1.00\times 10^{31}}{6.023\times 10^{23}}=0.166\times 10^{8}moles[/tex]
1 mole of phosphorous [tex]P[/tex] weighs = 31 g
Thus [tex]0.166\times 10^8[/tex] moles of phosphorous [tex]P[/tex] weigh=[tex]\frac{31}{1}\times 0.166\times 10^8=5.15\times 10^8g=5.15\times 10^5kg[/tex]
A double replacement reaction is a chemical reaction between two ionic compounds in which ions are interchanged to form two new compounds
a. True
b. False
Answer: True
Explanation:
The statement that "A double replacement reaction is a chemical reaction between two ionic compounds in which ions are interchanged to form two new compounds" is true.
We should also note that a double replacement reaction can also be referred to as a metathesis reaction. In such cases, the ions of the compounds involved will be exchanged in order for a new compound to be formed. An example of a metathesis reaction is:
FeSO4 + CuCl2 = FeCl2 + CuSO4
Please tell 4 strong alkalis and 4 weak alkalis
Red: weak
Orange: Strong
An aqueous solution containing 6.06 g of lead(II) nitrate is added to an aqueous solution containing 6.58 g of potassium chloride. Enter the balanced chemical equation for this reaction. Be sure to include all physical states. balanced chemical equation: What is the limiting reactant
Answer:
Pb(NO₃)₂ is the limiting reactant.
The equation is: Pb(NO₃)₂ (aq) + 2KCl (aq) → PbCl₂ (s) ↓ + 2KNO₃ (aq)
Explanation:
We identify our reactants:
Pb(NO₃)₂ → Lead (II) nitrate
KCl → Potassium chloride
Our reaction is:
Pb(NO₃)₂ (aq) + 2KCl (aq) → PbCl₂ (s) ↓ + 2KNO₃ (aq)
1 mol of Lead (II) nitrate reacts to 2 moles of KCl, in order to produce 2 moles of potassium nitrate and 1 mol of slid Lead (II) chloride.
We determine the moles of the reactants:
6.06 g . 1mol /331.2 g = 0.0183 moles of Lead (II) nitrate
6.58 g . 1mol / 74.55g = 0.0882 moles of KCl
2 moles of KCl react to 1 mol of Pb(NO₃)₂
Then, 0.0882 moles of KCl may react to (0.0882 . 1) /2 = 0.0441 moles
We have 0.0183 moles of Pb(NO₃)₂ and we need 0.441 moles. Then, the
Pb(NO₃)₂ is our limiting reactant.
A 33.0g sample of glass, which has a specific heat capacity of 0.670·J·g−1°C−1, is dropped into an insulated container containing 200.0g of water at 70.0°C and a constant pressure of 1atm. The initial temperature of the glass is 7.6°C. Assuming no heat is absorbed from or by the container, or the surroundings, calculate the equilibrium temperature of the water. Be sure your answer has 3 significant digits.
Answer:
68.4°C is the final temperature of the water
Explanation:
In this problem, the heat lost by the water is equal to the heat lost by the sample of glass, that is:
W(Gl)*S(Gl)*ΔT(Gl) = W(H₂O)*S(H₂O)*ΔT(H₂O)
Where W is mass (Gl = 33.0g; H₂O = 200.0g)
S is specific heat (Gl = 0.670J/g°C; H₂O = 4.184J/g°C)
And ΔT is change in temperature ( Gl = T-7.6°C; H₂O = 70.0°C-T)
Replacing:
33.0g*0.670J/g°C*(T-7.6°C) = 200.0g*4.184J/g°C*(70.0°C-T)
22.11*(T-7.6) = 836.8*(70.0-T)
22.11T - 168.04 = 58576 - 836.8T
858.91T = 58744.04
T = 68.4°C is the final temperature of the water
0.01 M HCl solution has a pH of 2. Suppose that during the experiment, both the universal pH indicator and the cabbage indicator turn orange-red for 0.01 M HCl. What can you conclude about the the cabbage indicator key?
A) It matches the universal pH indicator and is indicating the proper pH.
B) It should completely match the universal indicator key for all pH values greater than 7 (base).
C) It should completely match the universal indicator key for all pH values.
D) There was some sort of experimental error, because the indicators should never match.
Answer:
(A) It matches the universal pH indicator and is indicating the proper pH.
Explanation:
Correct on edge 2021
Given the data from the question, the correct statement is:
The cabbage indicator matches the universal pH indicator and is indicating the proper pH (Option A) What is pH ?This is simply a measure of the acidity / alkalinity of a solution.
The pH measures the hydrogen ion concentration while the pOH measures the hydroxide ion concentration
pH scaleThe pH scale is a scale that gives an understanding of the variation of the acidity / alkalinity of a solution.
The scale ranges from 0 to 14 indicating:
0 to 6 indicates acid 7 indicates neutral 8 to 14 indicate basicpH indicatorsThese are devices / equipment used to indicate if a solution is acidic, neutral or basic.
From the question given above, we were told that the universal and the cabbage pH indicator gives the same result.
Therefore, we can conclude that the cabbage indicator is indicating the proper pH (Option A)
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Which is a pollutant associated with high-tech gadgets in landfills?
O A. Nitrogen
O B. Carbon Dioxide
O C. Iron
D. Mercury
Answer:
D
Explanation:
Most likely, the pollutant that is most associated with high-tech gadgets in landfills would be heavy metals like lead, cadmium and mercury since they are being used in most of the electronic devices. Usually these metals can be found in the batteries of these gadgets.
High-tech gadgets in landfills would be heavy metals like lead, cadmium and mercury since they are being used in most of the electronic devices. Usually these metals can be found in the batteries of these gadgets. Hence, option D is correct.
What are landfills?Modern landfills are well-engineered and managed facilities for the disposal of solid waste.
Landfills are located, designed, operated and monitored to ensure compliance with federal regulations.
For instance, television and computer monitors normally contain hazardous materials such as lead, mercury, and cadmium, while nickel, beryllium, and zinc can often be found in circuit boards.
Due to the presence of these substances, recycling and disposal of e-waste becomes an important issue.
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Balance the following equations.
Al4C3 + H2O → Al(OH)3 + CH4
NH3 + O2 → NO + H2O
Answer:
Al4C3 +12 H2O → 4Al(OH)3 + 3CH4
4NH3 + 5O2 → 4NO + 6H2O
A student needs 7.6 liters of a 0.18 molar solution for an experiment. How many grams of solute does the student need if the molar mass of the solute is 22.71 g/mol? Round your answer to the nearest 0.01
Answer:
31.07 g
Explanation:
First we calculate how many moles of solute would there be in 7.6 liters of a 0.18 molar solution, using the definition of molarity:
molarity = moles / volume0.18 M = moles / 7.6 Lmoles = 1.368 molNow we calculate the mass of 1.368 moles of solute, using the given molar mass:
1.368 mol * 22.71 g/mol = 31.07 gA white crystalline salt conducts electricity
when it is melted and when it is dissolved
in water. Which type of bond does this salt
contain?
A. ionic
B. metallic
C. covalent
D.
network
why fermentation carried temperature in range of 30 to 40°C
Answer:
i dont kno
Explanation:
Explanation:
As temperature increases, fermentation rate accelerates. With increased fermentation rate, more aromatic compounds are produced because the metabolic intermediates are excreted from the yeast cells just like people getting sweaty and stinky during vigorous exercise.
some important points for hadpicking
Answer:
Handpicking right?
It is a very simple and easy method of separation. It doesn't require any kind of equipment to proceed. It takes very less time when performed for small quantity of mixture. It doesn't require any kind of preparation
uses of carbon dioxide.
Answer:
hello can you follow me
Explanation:
used in fire extinction, blasting rubber, foaming rubber and plastic
Which of the following is not a property of water?
A. It dissolves most ionic substances.
B. It has a lower density than most liquids do.
C. It has a higher density in the liquid state than in the solid state.
D. It has a high specific heat.
Answer:
b.it has a lower density than most liquid do
1 How many milliliters of a 1.75 M LiCl solution contain 15.2 g of LiCI? (9.4)
Answer:
I dont no ok bye
Thank you
A tank of water was contaminated with a colored dye (D). To determine the concentration of D, an analyst took 5.0-mL solution from the contaminated water as a sample, and measured the absorbance, yielding a value of 0.10. Afterwards, the analyst added 5.0-mL of 0.02 M standard D solution into the sample solution, and measured the absorbance, yielding a value of 0.20. What is the concentration of D in the original sample solution
Answer:
0.005 M
Explanation:
Given data:
volume of sample solution ( volume of D ) = 5.0 mL
volume of added stock solution ( V1 ) = 5.0 mL
concentration of added stock solution ( N1 ) = 0.02 M
Total volume of concentration ( V2 )= 10 mL = ( 5.0 mL + 5.0mL)
concentration of Total volume of sample ( C2 ) = 0.01
N2 = ( N1V1 ) / V2
= ( 0.02 * 5 ) / 10 = 0.01 m
absorbance of sample solution ( A1 ) = 0.10
absorbance of additional sample solution ( A2 ) = 0.20
attached below is the remaining part of the detailed solution
What are the two most abundant chemicals in air?
Answer:
The most abundant chemical/gas is Nitrogen, which makes up about 78% and Oxygen at second place with approximately 21%
Answer:
Nitrogen and Oxygen because about 70% of air is nitrogen and around 20% of air is Oxygen.
Hope this helps!
What is an organelle
(A)Organelles are only common to prokaryotic cells
(B)An organelle is made up of different tissues working together
(C)An organelle is structure in a cell that performs a specific task...
Answer:
CExplanation:
An organelle is structure in a cel that performs a specific task or job.
Answer:
I believe the answer is C: an organelle is structure in a cell that performs a specific task
What is the [H3O+] in 0.550 molar C6H5COOH?
Given: pKa = 4.19
A. 5.96 × 10-3 molar
B. 9.38 × 10-3 molar
C. 0.76 × 10-3 molar
D. 5.96 × 103 molar
Answer:
A. 5.96 × 10^-3 molar
Explanation:
PLATO
