Answer:
Concentrated sulfuric acid is used as a catalyst, and has a dual role:
-Speeds up the reaction.
-Acts as a dehydrating agent, forcing the equilibrium to the right and resulting in a greater yield of ester.
The two functions performed by the concentrated sulfuric acid in the reaction is that Concentrated sulphuric acid often removes molecules of water from formic acid and it acts as a dehydrating agent in creation of carbon monoxide.
The function of the concentrated sulfuric acid in a reaction is that Concentrated sulfuric acid can be used as a catalyst.
It help to Speeds up the reaction and can also be a dehydrating agent, by bringing in the equilibrium to the right and leading to a greater yield of ester.
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A sample of gas at a pressure of 0.850 atm has a volume of 675 mL. What will the
volume be if the pressure is increased to 1.50 atm?
Answer:
382mL
Explanation:
Boyle's Law P₁V₁ = P₂V₂
(0.850atm)(675mL) = (1.50atm)(V₂)
573.75 = (1.50atm)(V₂)
V₂ = 573.75/1.50
V₂ = 382.5mL = 382mL
Help me plz I got a pic for yall
Answer:
Baking Soda
Explanation:
Baking soda has 4 elements. Hope this helps!
(R)-Limonene is found in many citrus fruits, including oranges and lemons. Draw its structures and identify the relationship between them.
Answer:
we cant draw jn this
Explanation:
because it contin citric acid
Diabetes mellitus is characterized by too much glucose buildup in the blood. In _________________ diabetes, this is because the target cells of the body's tissues fail to respond to insulin; in later stages of this type of diabetes, the _______________ begins to fail and eventually stops secreting the hormone insulin, which is required to decrease blood glucose levels. In ______________ diabetes, this is because there are ______________ number of beta cells available to secrete insulin; this results in an insufficient amount of insulin to meet the demands of the body.
Now, choose the individual who is most likely to have type 2 diabetes:
A. A 6-year-old child
B. A 62-year-old inactive man who is tired all the time
C. A 40-year-old runner with tendonitis
D. An overweight teenage girl whose grandmother has diabetes
Diabetes mellitus is characterized by too much glucose buildup in the blood. In Type 2 diabetes, this is because the target cells of the body's tissues fail to respond to insulin; in later stages of this type of diabetes, the pancreas begins to fail and eventually stops secreting the hormone insulin, which is required to decrease blood glucose levels. In Type 1 diabetes, this is because there are less number of beta cells available to secrete insulin; this results in an insufficient amount of insulin to meet the demands of the body. A 62-year-old inactive man who is tired all the time is most likely to have a type 2 diabetes.
What are pancreas?It is an organ located in abdominal region.It severs as an endocrine as well as an exocrine gland.The hormones produced by it helps in regulating blood glucose level.As an endocrine gland, it secretes hormone insulin which coverts glucose into glucagon and glucagon which converts glucagon into glucose.As an exocrine gland, it secrete juices that helps in digestion. What is diabetes mellitus?It is a condition in which you body's blood glucose level is high.The pancreas does not produce enough insulin that is required by our body.It is of three types: Type 1, Type 2 and gestational diabetes.Type 1 diabetes is a condition in which the immune system of our body destroys the beta cells of pancreas that secretes insulin.Type 2 diabetes: In this the beta cells of pancreas are very low and it does not make enough insulin to meet the demands of the body.Type 2 diabetes is usually occurs in person of over 45 years age.Hence, the correct option is B. A 62-year-old inactive man who is tired all the time.
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If 5.00 grams of copper metal reacts with oxygen to produce 5.62 grams of 'copper oxide' ,what is the empirical formula of the 'copper oxide' compound?
Answer:
[tex]Cu_2O[/tex]
Explanation:
Hello!
In this case, according to the law of conservation of mass, it is possible to realize that the mass of oxygen comes from the subtraction of the total mass and the mass of copper:
[tex]m_O=5.62g-5.00g\\\\m_O=0.62gO[/tex]
Next, we compute the moles of both Cu and O given their atomic masses:
[tex]n_{Cu}=5.00gCu*\frac{1molCu}{63.546gCu}=0.0787molCu\\\\n_O=0.62gO*\frac{1molO}{16.0 gO}=0.03875molO[/tex]
Now, we divide by the moles of oxygen as the fewest ones, in order to calculate their subscripts in the empirical formula:
[tex]Cu=\frac{0.0787}{0.03875} =2.0\\\\O=\frac{0.03875}{0.03875} =1[/tex]
Therefore, the empirical formula turns out to be:
[tex]Cu_2O[/tex]
Best regards!
Which of these is a pair of coordination isomers (aka ionization isomers)?
a. Na2[NiBr2Cl2] and K2[NiBr2Cl2]
b. [Ni(NH3)3Br]Cl and [Ni(NH3)3Cl]Br
c. [Ni(NH3)3(H2O)]SO4 and [Ni(NH3)2(H2O)2]SO4
Which of these pairs are linkage isomers??
a. [Pt(Cl)2(SCN)4]^4- and [Pt(Cl)2(NCS)4]^4-
b. [Pt(Cl)2(SCN)4]^4- and [Pt(Cl)4(SCN)2]^4-
c. K4[Pt(Cl)2(SCN)4] and Na4[Pt(Cl)2(SCN)4]
Answer: [tex][Ni(NH_3)_3Br]Cl[/tex] and [tex][Ni(NH_3)_3Cl]Br[/tex] are ionization isomers.
[tex][Pt(Cl)_2(SCN)_4]^{4-}[/tex] and [tex][Pt(Cl)_2(NCS)_4]^{4-}[/tex] are linkage isomers.
Explanation:
Ionization isomerism occur when a ligand that is bound to the metal center exchanges places with an anion or neutral molecule that was originally outside the coordination complex
Thus [tex][Ni(NH_3)_3Br]Cl[/tex] and [tex][Ni(NH_3)_3Cl]Br[/tex] are ionization isomers.
Linkage isomerism is the existence of coordination compounds that have the same composition differing with the connectivity of the metal to a ligand.
Thus [tex][Pt(Cl)_2(SCN)_4]^{4-}[/tex] and [tex][Pt(Cl)_2(NCS)_4]^{4-}[/tex] are linkage isomers.
what is the mass of 5 litres of oxygen at STP
Answer:
First and foremost, keeping in mind that at room temperature, Oxygen is a gas.
So, Volume of Oxygen(O2) given = 5.6L.
Finding moles, Moles=Volume/22.4.
Moles= 5.6/22.4=1/4moles.
So, finding mass of O2= moles × Mol. Wt.
Mass( in grams) = 1/4 × 32. We have taken 32 as oxygen is is combined state O2, so 16×2=32.
We get, mass =8 grams. This is mass not active mass.
Active mass means molarity which will be
0.25/5.6= 0.044
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According to standard temperature and pressure conditions, the mass of 5 litres of oxygen is 0.157 g.
What are standard temperature and pressure conditions?Standard temperature and pressure are defined as a standard set of conditions required for experimental measurements which are established to allow comparison between different sets of data.
Standards which are commonly used are those International Union of pure and applied chemistry and national institute of standards and technology.These are not universally accepted standards but are the ones which are commonly used.
According to ideal gas equation, mass=PV×molar mass/RT= 1×22.4×16/8.314×273=0.157 g.
Thus, the mass of 5 litres of oxygen is 0.157 g.
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Explain what you discovered from the Simulation about why food coloring spreads faster in warmer water.
Answer:
the water molecules have more energy and are moving faster than the molecules of cold water. This makes it easier for the dye to get mixed throughout the hot water.
Explanation:
Answer:
Because particles moves more by kinetic energy and diffusion will spread with the particles
Explanation:
A space craft used to transport people and equipment to and from the space station A. Satellite B. Shuttle C. Probe D. Telescope
Answer:
B. Shuttle
Explanation:
Satellites are small devices that orbit the planet and usually not crewed by people. Probes are smaller devices designed to collect data and again, usually not crewed. Telescopes can be in orbit, interstellar, or based on Earth, but not something that transports people or equipment as they are used for imaging.
What phase is the water in at 150 degrees Celsius?
Answer:
Gas State cause the waters boiling point is 100 degrees Celsius
Explanation:
Answer: a gas
Explanation: at 100 degrees Celsius water goes from a liquid to a gas. so any farther is at the gaseous state.
Hope this helps :)
10. Many cooking pans are made of aluminium although it is a reactive metal, Explain.
Answer:
Aluminium is a highly reactive metal yet it is used to make utensils for cooking this is because aluminium reacts with oxygen present in air to form a thin layer of Aluminium oxide is oxide layer is very stable and prevent for the reaction of aluminium with oxygen
What happens after coral is bleached?
It produces peroxides.
It releases algae into the ocean.
It dies immediately.
It is susceptible to starvation
Balance the following equations:
I
Na +
Br2 →
NaBr
C4H6 +
02 →
CO2 +
H2O
3)
LiOH +
H3PO4 →
Li3PO4 +
H2O
4)
CaSO4 +
KNO3 →
Ca(NO3)2 +
K2SO4
5)
H2O2 →
H2O +
02
ANSWERS :-
1)
[tex]\red{2}Na + Br2 → \red{2}NaBr[/tex]
2)
[tex]\blue{2}C4H6 + \blue{11}O2 → \blue{8}CO2 + \blue{6}H2O[/tex]
3)
[tex]H3PO4 + \green{3}LiOH → \green{3}H2O + Li3PO4[/tex]
4)
[tex]Ca(NO3)2 + K2SO4 → CaSO4 + \pink{2}KNO3[/tex]
5)
[tex]\orange{2}H2O2→\orange{2}H2O+O2[/tex]
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[tex]\large\sf\red{thank \: you}[/tex]
The churning movement of the mantle is due to
А
fault lines.
B
erupting volcanoes.
C
convection currents.
D
plate tectonics.
Answer:
the answer should be D, I hope this helps!
why the ph of glycine increases when 0.1 M NaOH is added dropwise
Answer:
The acid-base reaction produces glycine reduction, and hence the increase of glycine pH.
Explanation:
The glycine is an amino acid with the following chemical formula:
NH₂CH₂COOH
The COOH functional group is what gives the acid properties in the molecule.
Hence, when NaOH is added to glycine an acid-base reaction takes place in which COOH reacts with the NaOH added:
NH₂CH₂COOH + OH⁻ ⇄ NH₂CH₂COO⁻ + H₂O
The glycine concentration starts to shift to its ion form (NH₂CH₂COO⁻) because of the reaction with NaOH, that is why the pH glycine increases when NaOH is added.
Therefore, the acid-base reaction produces glycine reduction, and hence the increase of glycine pH.
I hope it helps you!
metal and one atom of a group
The following Lewis representation depicts a reaction between one atom of a group
nonmetal
eg
X.
+
x*
+
In this representation, each
atom loses
electron(s) and each
atom gains
electron(s)
Teg
The bonds that form in the product would be
Explanation:
X = Group 1 metal
Y = Group 7 Non metal
The dots basically signifies the group.
Metal loses electrons and non metal gains electron. The valency of X is 1 and that of Y is 7.
X atom loses one electron and Y atom gains one electron.
The bond that forms between a metal and a non metal is an ionic bond.
Which properties do atoms of the same element share? *
chemical reactivity
melting point
How would you write 0.620 in scientific notation?
HELP
Carla and Maurice are recording the temperatures of classrooms at their school, but they're using two different
thermometers. They plan to present their readings in both kelvins and degrees Celsius. Help the students convert their
temperatures from one scale to the other.
Type the correct answer in each box.
Answer:
1. 25.19
2. 301.57
Explanation:
it says it's correct...
The conversion of units of temperatures from one scale to the other which is measure by Carla and Maurice are given as.
298.34 K = 25.34°C
28.42°C = 301.42 K
How many units of temperature there?The temperature can be measure by using three units.
Kelvin abbreviate as KCelsius abbreviate °CFahrenheit abbreviate FRelationship between Kelvin (K) and Celsius (°C)
Let the value of temperature in Celsius (°C) unit as X °C, then value of this temperature in Kelvin (K) is,
X °C = 273 + X °C = (273 + X) K
Let the value of temperature in Kelvin (K) as Y K , then value of this temperature in Celsius (°C) is,
Y K = Y K - 273 = (Y - 273) °C
If 298.34 K
Then 298.34 K = 298.34 K - 273 = 25.34°C
If 28.42°C
Then, 28.42°C = 273 + 28.42°C = 301.42 K
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Each person in a room is assumed to be producing carbon dioxide at the average rate of 0.0107 cfm (5.0 ml/s) and air with a CO2 concentration of 280 ppm is being supplied to the room at the rate of 6000 cfm (2.8 m3/s). It is desired to keep the concentration level of CO2 in the space below 1000 ppm. Assuming complete mixing, determine how many persons could occupy the room and not exceed the desired CO2 level.
Answer:
404 persons
Explanation:
To get n= number of persons
We use this formula
n = I(Dc - EaC)Eaf
I = 6000 = inflow rate
Dc = desired concentration = 1000
Eac = Exhaled air concentration = 280ppm = 0.00028
Exhaled air flow rate = Eaf = 0.0107
When we put values into the formula above
6000(0.001-0.00028)/0.0107
= 6000(0.00072)/0.0107
= 4.32/0.0107
= 403.7
= 404 persons
if 3.0 L of a gas at 20.0 degrees Celsius is heated to 30.0 degrees celsius what is the new volume of gas?
Explanation:
hece ,, it is your answer you can see
The new volume with raised temperature can be find out using Charles's law. When the temperature of the gas is raised to 20 to 30 degree celsius, the volume will increase from 3 L to 4.5 L.
What is Charles's law?Charles law states that at constant pressure, the volume and temperature of a gas are in direct proportion.
Hence V/T = a constant.
Let V1 and T1 bet the initial volume and temperature and V2 and T2 be the final volume and temperature respectively. Then we can write it as:
[tex]\rm \frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}[/tex]
It is given that the initial volume and temperature of the gas are 3 L at 20 degree Celsius. The final temperature is 30 degree celsius then the final volume can be calculated as :
V2 = V1 T2/ T1
= (3 L × 20 °C) / 30 °C
= 4.5 L.
Hence, the final volume of the gas is 4.5 L.
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What would happen in the future if global warming is not addressed properly?
Answer and Explanation:
If the future did not address global warming properly, then the world will become too hot faster than it should, and the days will get extremely hot, and in the distant future, lead to our extinction.
To address this problem, we can spread the awareness about it, get people to think open minded and not think that global warming is a joke, and plant trees, which takes in the carbon dioxide we exhale.
#teamtrees #PAW (Plant And Water)
Which chemical element represents the most abundant “atoms of an element” found in air?
Answer:
The order of elements by volume-fraction (which is approximately molecular mole-fraction) in the atmosphere is nitrogen (78.1%), oxygen (20.9%), argon (0.96%), followed by (in uncertain order) carbon and hydrogen because water vapor and carbon dioxide, which represent most of these two elements in the air, are variable.
I copied and pasted but I hope this information is helpful :)
What is lymph?
oxygen-rich blood on its way to body tissues
plasma circulating in lymphatic vessels
a lymphoid tissue that filters blood
an organ that hosts lymphocytes
How does molecular formula differ from empirical formula and structural
formula? Cite an example.
Answer:
Empirical formulas show the simplest whole-number ratio of atoms in a compound, molecular formulas show the number of each type of atom in a molecule, and structural formulas show how the atoms in a molecule are bonded to each other.
Explanation:
this is the correct answer you want
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In a Sodium ion 11Na +1
atomic number =11
mass number =23 ,
the number of electrons =
Answer:
11 electrons
Explanation:
The number of electrons is the same as the number of protona in a ATOM.
They will most likely be different in a ion, simple bond or a convalent bond.
Water Cycle, what percentage of Earths water can be found in soil?
What is the molar mass of Mg(HSO3)2?
which of the following statement about genes and trait is true
Answer:
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body.
Chromosomes are structures within cells that contain a person's genes. A trait is any gene-determined characteristics and is often determined by more than one gene.
for study island:
A single trait can be controlled by multiple genes.
A single gene can influence multiple traits.
What occurs in combustion reaction? Explain
Answer:
In a combustion reaction, a substance reacts with oxygen from the air. Combustion reactions happen at high temperatures, and transfer energy to the surroundings as light and heat. This is why you see flames when things burn. ... The products of combustion reactions are compounds of oxygen, called oxides.
