A mixture consists of 25.60 grams of iron and4.25 grams of silver. What is the mole fraction of
silver?

Answers

Answer 1

Answer:

Final answer:

To find the mole fraction of silver in the mixture, divide the moles of silver by the total moles of both elements.

Explanation:

To find the mole fraction of silver in the mixture, we need to calculate the moles of silver and iron. First, calculate the moles of silver by dividing the mass of silver by its molar mass. Then, calculate the moles of iron in the same way. Finally, find the mole fraction of silver by dividing the moles of silver by the total moles of both elements in the mixture.

Moles of silver = mass of silver / molar mass of silver

Moles of iron = mass of iron / molar mass of iron

Mole fraction of silver = moles of silver / (moles of silver + moles of iron)

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The reaction converting glycerol to glycerol-3-phosphate can be represented as: glycerol + hpo42− ⟶ glycerol-3-phosphate + h2o. the gibbs energy for this reaction is δg∘ = 9.2 kj/mol. will this reaction be spontaneous if coupled with the hydrolysis of atp?

Answers

Answer:

Yes, this reaction will be spontaneous.

Explanation:

A reaction is spontaneous if ΔG < 0.

The coupling of glycerol to glycerol-3-phospate with ATP gives:

glycerol + HPO₄²⁻ ⟶ glycerol-3-phosphate + H₂O ΔG = +9,2 kJ/mol

ATP + H₂O ⟶ ADP + HPO₄²⁻ ΔG = -30,5 kJ/mol

glycerol + ATP ⟶ ADP + glycerol-3-phosphate

ΔG = +9,2 kJ/mol - 30,5 kJ/mol = -21,3 kJ/mol

As ΔG<0, this reaction will be spontaneous

I hope it helps!

Answer;

Yes; this reaction be spontaneous if coupled with the hydrolysis of ATP.

Explanation;

The reaction converting glycerol to glycerol-3-phosphate (energetically unfavorable) can be coupled with the conversion of ATP to ADP (energetically favorable):

Glycerol + HPO42 ⟶glycerol-3-phosphate+H2O

ATP + H2O⟶ ADP + HPO42− + H+

A substance has a mass of 10 grams and a volume of 5mL. What is its density?

Answers

Answer:

The answer is

2.0 g/mL

Explanation:

The density of a substance can be found by using the formula

$density = (mass)/(volume)$

From the question

mass = 10 g

volume = 5 mL

The density of the substance is

$density = (10)/(5)$

We have the final answer as

2.0 g/mL

Hope this helps you

ANALOGY: Evaporates are to chemical sedimentary as dead fish are to clastic sedimentary.

Answers

Your answer will be false.

Compare the shape and volume of solids, liquids and gases.

Answers

Solids have both fixed volumes and fixed shapes.
Liquids have fixed volumes, but their shapes depend upon the containers in which they are held.
Gases have neither fixed volumes nor fixed shapes, and expand to fill their containers.

Trisha is learning how to do a first-aid procedure known as CPR. She is practicing using a mannequin, or a model of the top half of the human body.What is one limitation of a CPR mannequin?
A.
It is not possible to press down on the chest of a CPR mannequin.
B.
It is not possible to breathe into the mouth a CPR mannequin.
C.
It is not possible to check for a real pulse on a CPR mannequin.
D.
It is not possible to lay a CPR mannequin on the floor.

Answers

C is the answer 〰️I need more characters Oop

Answer: The answer is C cause a CPR doll can do the rest

Explanation: pls mark as brainliest

The density of a liquid gold is 19.32 g/mL. If you were to fill a 2.000 liter soda bottle with gold what would the mass of the liquid be?

Answers

Answer:

38,640g

Explanation:

Since the density is in g/mL, we have to convert 2.000 liters to mil-liters to be able to successfully use the formula of M=V*D. Convert liters to mil-liters and you should have 2000mL in which you can plug into the equation of M= 2000mL*19.32g/mL, mL cancels, and you're left with 38,640g (here the significant figures are already in check).

Final answer:

The mass of liquid gold in a 2-liter soda bottle would be 38640 grams. This is calculated by multiplying the volume of the bottle (2 liters, or 2000 mL) by the density of liquid gold (19.32 g/mL).

Explanation:

Density characterizes how much mass is packed into a given volume. In this case, we know that the density of liquid gold is 19.32 g/mL. Since 1 Liter equals 1000 mL, Our soda bottle has a volume of 2.000 liters or 2000 mL. To determine the mass of the liquid gold in this volume, we perform a simple multiplication: density * volume = 19.32 g/mL * 2000 mL = 38640 grams.

So, if the 2-liter bottle is completely filled with liquid gold, the mass of the gold would be 38640 grams.