CHEMISTRY HIGH SCHOOL

In the following reaction, how many grams of NaBr will produce 244 grams of NaNO3? Pb(NO3)2(aq) 2 NaBr(aq) PbBr2(s) 2 NaNO3(aq) The molar mass of NaBr is 102.9 grams and that of NaNO3 is 85 grams

Answers

Answer 1

Answer:

Answer : The mass of $NaBr$ is, 295.323 grams

Solution :

First we have to calculate the moles of $NaNO_3$ .

$\text{Moles of }NaNO_3=\frac{\text{Mass of }NaNO_3}{\text{Molar mass of }NaNO_3}=(244g)/(85g/mole)=2.87moles$

Now we have to calculate the moles of NaBr.

The balanced chemical reaction is,

$Pb(NO_3)_2(aq)+2NaBr(aq)\rightarrow PbBr_2(s)+2NaNO_3(aq)$

From the balanced reaction we conclude that

As, 2 moles of $NaNO_3$ react with 2 moles of $NaBr$

So, 2.87 moles of $NaNO_3$ react with 2.87 moles of $NaBr$

Now we have to calculate the mass of NaBr.

$\text{Mass of }NaBr=\text{Moles of }NaBr* \text{Molar mass of }NaBr$

$\text{Mass of }NaBr=(2.87mole)* (102.9g/mole)=295.323g$

Therefore, the mass mass of $NaBr$ is, 295.323 grams

Related Questions

A scientist wants to perform a controlled experiment to test the effect of rust on chemically treated iron. which action would be most important to perform in a controlled experiment? design an experiment that is based on previously published results. expose the treated iron to the corrosive effects of the air. test a large piece of treated iron and a small piece of untreated iron. test a piece of treated iron and a piece of untreated iron under the same conditions.
What happens when you mix soil with water?
Dalton hypothesized that atoms are indivisible and that all atoms of an element are identical. It is now known that _____. A. all of Dalton's hypotheses are correct B. atoms of an element can have different numbers of protons C. atoms are divisible D. all atoms of an element are not identical but they must all have the same mass
What is Nuclear Fission?
Which term identifies a type of nuclear reaction?(A) fermentation(B) reduction(C) deposition(D) fission

what is the best definition of an element? a. an element is a substance that cannot be broken down. b. an element is a positively charged particle. c. an element is a substance only found in stars.

Answers

The correct answer is a

If 41grams of water at 24°C absorbs 2208 J of heat energy, what will be the final temperature of the water?

Answers

The problem can solved using the heat equation which is expressed as:

H = mCΔT

where H is the energy absorbed or released, m is the mass of the substance, C is the specific heat capacity, and ΔT is the change in temperature.

2208 J = 41 g x 4.18 J/g·°C x ( T - 24 °C)
T = 36.88 °C

Which solution will change litmus paper red?B) CH300 (aq)A) NaOH (aq)How many milliliters 0.100 M NaoH(aq) would be needed to compofB) 50.0 mLA) 300. mL

Answers

None of the solutions will change the litmus paper to red. Normally, a litmus paper is colored blue and when acidic solution is present it will turn to red. Since the given choices are CH3OO- (Acetate Ion) and NaOH (Sodium Hydroxide) are both base.

How many electrons can exist in the second shell surrounding an atomic nucleus?A. 1 or 2
B. 1 to 8
C. more than 8
D. It depends on what the element is.

Answers

It depends on what the element is. But the maximum number of electrons an atom can hold for its second shell is 8

Find a mole of 0.0960 g of H2SO4

Answers

Molar mass H₂SO₄ = 98.079 g/mol

1 mol -------- 98.079 g
? mole ------ 0.0960 g

moles = 0.0960 * 1 / 98.079

= 0.0960 / 98.079

= 9.788 x 10⁻⁴ moles

hope this helps!

Final answer:

The number of moles of 0.0960 grams of H2SO4 can be calculated using the formula: mole = mass / molecular weight. Given that the molecular weight of H2SO4 is 98.08 g/mol, we find that 0.0960 grams of H2SO4 is approximately 0.000978 moles.

Explanation:

The question is asking us to find a mole of 0.0960 g of H2SO4. In order to solve it, we need to know the molecular weight of H2SO4 (Sulfuric acid), which is approximately 98.08 g/mol.

This means that 1 mole of H2SO4 has a mass of 98.08 grams. We would now like to find out how many moles correspond to 0.0960 grams.

We use the equation: mole = mass / molecular weight, thus: mole = 0.0960 g / 98.08 g/mol = 0.000978 moles.

Therefore, 0.0960 grams of H2SO4 corresponds to approximately 0.000978 moles.

Learn more about Mole Calculation here:

brainly.com/question/35158407

#SPJ2

object a at 40 degrees C and object b at 80 degrees C are placed in contact with each other which statement descibes the heat flow between the objects

Answers

Object A at 40 degrees C and object B at 80 degrees C are placed in contact with each other. The heat flow will flow from the Object B to the object A because of temperature difference. To attain equilibrium, the heat flow must flow form a higher temperature to a lower temperature.

Other Questions

What was henri becquerel studying when he accidentally discovered radioactivity?

What is free-fall acceleration near earth's surface

Which of these statements is NOT TRUE? Scientists propose explanations that can be explained by examining evidence. Scientists propose explanations that can be explained by examining evidence. Science is an organized way to investigate, understand, and explain events in the natural world. Science is an organized way to investigate, understand, and explain events in the natural world. Scientists collect and organize information randomly, looking for patterns and connections between events. Scientists collect and organize information randomly, looking for patterns and connections between events. Science deals only with the natural world.

What is the term for a fine grained soil deposited by the wind