All categories

3 years ago

About how many minerals make up most types of rock?

Chemistry

2 answers:

alexandr1967 [171]3 years ago

4 0

Answer:

20 different minerals or 95% of minerals make up rocks.

Explanation:

Margaret [11]3 years ago

3 0

Answer:

20 different kinds of minerals make up 95% of earth's rocks.

 I hope this helps... please correct me if i'm wrong

You might be interested in

Calculate the concentration of A bottle of wine contains 12.9% ethanol by volume. The density of ethanol (CH3OH) is 0.789 g/cm e

Delicious77 [7]

Answer:

The mass percentage of the solution is 10.46%.

The molality of the solution is 2.5403 mol/kg.

Explanation:

A bottle of wine contains 12.9% ethanol by volume.

This means that in 100 mL of solution 12.9 L of alcohol is present.

Volume of alcohol = v = 12.9 L

Mass of the ethanol = m

Density of the ethanol ,d= $0.789 g/cm^3=0.789 g/mL$

$1 cm^3=1 mL$

$m=d\times v=0.798 g/ml\times 12.9 mL = 10.1781 g$

Mass of water = M

Volume of water ,V= 100 mL - 12.9 mL = 87.1 mL

Density of water = D=1.00 g/mL

$M=D\times V=1.00 g/ml\times 87.1 mL =87.1 g$

Mass percent

$(w/w)\%=\frac{m}{m+M}\times 100$

$\frac{10.1781 g}{10.1781 g+87.1 g}\times 100=10.46\%$

Molality :

$m=\frac{m}{\text{molar mass of ethanol}\times M(kg)}$

M = 87.1 g = 0.0871 kg (1 kg =1000 g)

$=\frac{10.1781 g}{46 g/mol\times 0.0871 kg}$

$m=2.5403 mol/kg$

4 0

3 years ago

How many moles are there in 3.9 grams of potassium

zimovet [89]

1.77 so A. I don’t need to explain this just helping out haha

7 0

2 years ago

Read 2 more answers

6. The boys _____ their bags, tied their shoes tight, and started off down the trail. A. readjustment B. adjusted C. adjust D. a

Illusion [34]

B. Adjusted that is your answer
I hope it was helpful

7 0

3 years ago

A mixture of 1.20 mols He, 2.40 mols Ne, 4.80 mols Kr, and 0.60 mols Ar has a total pressure of 600.0 mm Hg. What is the partial

Juliette [100K]

Answer: The partial pressure of the Kr is 320 mm Hg.

Explanation:

According to Raoult's Law , the partial pressure of each component in the solution is equal to the total pressure multiplied by its mole fraction. It is mathematically expressed as

$p_A=x_A\times P_{total}$

where, $p_A$ = partial pressure of component A

$x_A$ = mole fraction of A

$P_{total}$ = total pressure

mole fraction of Krypton = $\frac{\text {Moles of Kr}}{\text {total moles}}=\frac{4.80}{1.20+2.40+4.80+0.60}=0.53$

$p_{Kr}=0.53\times 600mmHg=320mmHg$

Thus partial pressure of the Kr is 320 mm Hg

8 0

3 years ago

Which statement about neutrons is true?

Bezzdna [24]

Answer: D. A neutron has no charge

Explanation: Neutrons are subatomic particles found inside the nucleus of an atom. This particle is neutral and has no charge at all. That is the reason why the nucleus is positively charge since only the protons exhibits a charge and the neutrons carries no charge.

8 0

3 years ago