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AnnZ [28]
3 years ago
8

A mixture that has two or more substances that are spread out evenly is called _____

Chemistry
1 answer:
svlad2 [7]3 years ago
6 0

Answer:

D

Explanation:

heterogeneous mixture you can see the different substances that go into it.

homogeneous mixture you can't see the difference, the mixture looks like one substance.

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An empty steel container is filled with 2.0 atm of H₂ and 1.0 atm of F₂. The system is allowed to reach equilibrium according to
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H₂ (g) + F₂ (g) ⇌ 2 HF (g)

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Choose the formula for calculating percent composition.
kondor19780726 [428]

Answer:

The equation for percent composition is (mass of element/molecular mass) x 100.

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6 0
3 years ago
What is the mass of solute in a 500 mL solution of 0.200 M
Fofino [41]

16.4 grams is the mass of solute in a 500 mL solution of 0.200 M .

sodium phosphate

Explanation:

Given data about sodium phosphate

atomic mass of Na3PO4 = 164 grams/mole

volume of the solution = 500 ml or 0.5 litres

molarity of sodium phosphate solution = 0.200 M

The formula for molarity will be used here to know the mass dissolved in the given volume of the solution:

The formula is

molarity = \frac{number of moles of solute}{volume in litres}

    putting the values in the equation, we get

molarity x volume = number of moles

0.200 X 0.5= number of  moles

number of moles = 0.1 moles

Atomic mass x number of moles = mass

putting the values in the above equation

164 x 0.1 = 16.4 grams

16.4 grams of sodium phosphate is present in 0.5 L of the solution to make a 0.2 M solution.

8 0
3 years ago
What might happen if you got too close to the center of the Milky Way galaxy?
Lady_Fox [76]

Answer:

you would be trapped in the gravitational pull of a black hole

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there is a black hole in the center of the galacy

5 0
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