All categories

2 years ago

In the conclusion to the snake mole lab, you have to convert 3.45 moles of (NH4)2S04 to

Chemistry

1 answer:

Serhud [2]2 years ago

3 0

Molar mass = 132.14g/mol

You might be interested in

Iron is extracted from iron oxide in the Blast Furnace: Fe 2 O 3 + 3 CO → 2 Fe + 3 CO 2

arsen [322]

a. mass of iron = 69.92 g

b. percent yield = 93%

<h3>Further eplanation </h3>

Percent yield is the compare of the amount of product obtained from a reaction with the amount you calculated

General formula:

Percent yield = (Actual yield / theoretical yield )x 100%

An actual yield is the amount of product actually produced by the reaction. A theoretical yield is the amount of product that you calculate from the reaction equation according to the product and reactant coefficients

Reaction

Fe₂O₃+3CO⇒2Fe+3CO₂

MW Fe₂O₃ : 159.69 g/mol

mol Fe₂O₃

$\tt \dfrac{100}{159,69}=0.626$

mol Fe₂O₃ : mol Fe = 1 : 2

mol Fe :

$\tt \dfrac{2}{1}\times 0.626=1.252$

mass of Fe(Ar=55.845 g/mol) :

$\tt 1.252\times 55.845=69.92~g$

actual yield = 65 g

theoretical yield = 69.92 g

percent yield :

$\tt =\dfrac{65}{69.92}=0.93=93\%$

8 0

2 years ago

What do engineers use to test their designs of new technologies?

erica [24]

The answer Fam is B) Models

4 0

3 years ago

Read 2 more answers

What volume (in mL) of 0.250 M HCI would be

Nitella [24]

Answer: 1820 mL (to 3 sf)

Explanation:

The atomic mass of aluminum is 26.9815385 g/mol, so 4.10 g of aluminum is equal to 4.10/26.9815385 = 0.15195575300497 moles of Al.

From the coefficients of the equation, we know that for every 2 moles of aluminum consumed, 6 moles of HCl are consumed.

So, this means we need 0.15195575300497(6/2) = 0.45586725901491 moles of HCl.

Substituting into the molarity formula,

0.250 = 0.45586725901491/(liters of HCl)
liters of HCl = 0.45586725901491/0.250
liters of HCl = 1.8234690360596 L = 1820 mL (to 3 sf)

4 0

2 years ago

What's a certain indicator that a molecule is polar?

qaws [65]

I think the answer is D

6 0

3 years ago

Read 2 more answers

A scientist conducted an experiment and discovered that certain plants grow faster when given a particular amount of fertilizer.

Charra [1.4K]

The concept that this best illustrates is replication.

7 0

2 years ago

Read 2 more answers