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trapecia [35]
3 years ago
11

Answer: D=______ Don't forget the units! *

Chemistry
1 answer:
astraxan [27]3 years ago
6 0

Answer:

19.3 g/cm³

Explanation:

From the question given above, the following data were obtained:

Mass of nugget of gold = 965 g

Volume of nugget of gold = 50 cm³

Density =?

The density of a substance is simply defined as the mass of the substance per unit volume of the substance. Mathematically, it is expressed as:

Density = mass / volume

With the above formula, we can obtain the density of the nugget of gold as illustrated below:

Mass of nugget of gold = 965 g

Volume of nugget of gold = 50 cm³

Density of nugget of gold =?

Density = mass / volume

Density of nugget of gold = 965 / 50

Density of nugget of gold = 19.3 g/cm³

Thus, the density of the nugget of gold is 19.3 g/cm³.

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You want to make 500 ml of a 1 N solution of sulfuric acid (H2SO4, MW: 98.1). How many grams of sulfuric acid do you need?
umka21 [38]

Answer:

24.525 g of sulfuric acid.

Explanation:

Hello,

Normality (units of eq/L) is defined as:

N=\frac{eq_{solute}}{V_{solution}}

Since the sulfuric acid is the solute, and we already have the volume of the solution (500 mL) but we need it in liters (0.5 L, just divide into 1000), the equivalent grams of solute are given by:

eq_{solute}=N*V_{solution}=1\frac{eq}{L}*0.5L=0.5 eq

Now, since the sulfuric acid is diprotic (2 hydrogen atoms in its formula) 1 mole of sulfuric acid has 2 equivalent grams of sulfuric acid, so the mole-mass relationship is developed to find its required mass as follows:

m_{H_2SO_4}=0.5eqH_2SO_4(\frac{1molH_2SO_4}{2 eqH_2SO_4}) (\frac{98.1 g H_2SO_4}{1 mol H_2SO_4} )\\m_{H_2SO_4}=24.525 g H_2SO_4

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4 0
3 years ago
2. (Exercise 4.1.6) A liquid adhesive consists of a polymer dissolved in a solvent. The amount of polymer in the solution is imp
Lilit [14]

Answer:

800 lb of pure solvent , 1700 lb of 20% solution and 500 lb of 10% solution will be mixed to form 3000 lb of 13 % solution .

Explanation:

3000 lb of 13% solution is required .

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Rest = 390 - 50 = 340 lb required .

rest mass of solution = 3000 - 500 = 2500 lb

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mass of adhesive = .20 V

.20 V = 340

V = 1700

rest of the volume = 2500 - 1700 = 800 lb which will be of pure solvent

So 800 lb of pure solvent , 1700 lb of 20% solution and 500 lb of 10% solution will be mixed to form 3000 lb of 13 % solution .

6 0
3 years ago
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GuDViN [60]

Answer:

A phosphorus atom forms a P3- ion by gaining three electrons.

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4 0
2 years ago
Uranium is a metallic element that is used in nuclear reactors and nuclear weapons. the vast majority of uranium found on earth
katrin [286]
There will be 143 neutrons in uranium-235
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3 years ago
What are the protons neutrons and electrons of Vanadium-52 +3 charge<br> HELP
Alex17521 [72]

Answer:

Protons: 23

Neutrons: 28

Electrons: 23

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Explanation:

4 0
3 years ago
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