You cannot make gold with bakery ingredients as gold is made with hydrogen and helium. Not everything follows the same recipe as some objects. There are different recipes for each material which makes sense because minerals aren't made of wheat. Those minerals feel like stone and act like stone, so it wouldn't be logical if it was crafted with flour, sugar and eggs.

Hope this helps.

8 0

4 years ago

A nitric acid solution containing 71.0% HNO3 (by mass) is available in a laboratory. How many moles of HNO3 are present in 1.98

aleksandrvk [35]

The question is incomplete. Here is the complete question.

A nitric acid solution containing 71.0% HNO₃ (by mass) has a density of 1.42g/mL. How many moles of HNO₃ are present in 1.98L of this solution?

a. 62.8 mol

b. 31.7 mol

c. 22.3 mol

d. 3.16 x 10⁻² mol

e. none of these

Answer: b. 31.7 mol

Explanation: The solution has density of 1.42g/mL. So, in 1980 mL of solution:

$d=\frac{m}{V}$

m = d.V

m = 1.42(1980)

m = 2811.6 g

There are 2811.6 grams of solute.

Nitric acid in this solution is 71% by mass, which means

m = 2811.6(0.71)

m = 1996.236 g

In this solution, mass of nitric acid is 1996.236 grams.

Molar mass of HNO₃ is M = 63.01g/mol.

Then:

$n=\frac{m}{M}$

$n=\frac{1996.236}{63.01}$

n = 31.68 moles

In 1.98L of a nitric acid solution, there are 31.7 moles of HNO₃.

3 0

3 years ago

What is the molarity of 3.0 L solution containing 250 g of Nal

IgorC [24]

Answer: C. 0.57 M

Explanation:

Molarity= Moles/Vol

8 0

3 years ago