Give me Investigating questions that have dependent variable independent variable and control variable

Chemistry

1 answer:

Masteriza [31]2 years ago

4 0

Answer:

What type of soil filters water best?

Explanation:

dependent variable - the cleanliness of the water after it is filtered

independent variable - soil

control variable - water

(Asking with a <em>please </em>wouldn't hurt -_-)

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19. What is sthe mass of 6.02 x 1024 atoms

alekssr [168]

The mass of magnesium in $6.02 \times 10^{24}$ atoms is 240 g.

Answer: Option A

<u>Explanation:</u>

First, we have to convert the atoms to moles of magnesium.

We know that $6.02 \times 10^{24}$ atoms are present in 1 mole of magnesium. So,

$\text { 1 atom }=\frac{1}{6.02 \times 10^{24}} \text { moles }$

$6.02 \times 10^{24} \text { atoms }=\frac{6.02 \times 10^{24}}{6.02 \times 10^{23}} \text { moles }=10 \text { moles }$

Thus,

$Mass of M g= molar mass of M g \times No. of moles of M g$

$\text { Mass of } M g=24 \times 10=240 g$

Thus, 240 g of Magnesium is present in $6.02 \times 10^{24}$ atoms.

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2 years ago

During early research in nuclear energy, why were scientists surprised that the products from splitting a uranium nucleus had le

creativ13 [48]

Scientists expected that the law of conservation of mass would apply to nuclear fission in terms of the masses of the subatomic particles. In reality, the mass of an atom is not equal to the sum of the masses of the subatomic particles that make it up. This is because of the energy that binds the subatomic particles. This energy has mass and when the bond is broken, the mass of the energy of the bonds is lost resulting to what we now cal, a mass defect.

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2 years ago

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What is the name of this molecule ?

myrzilka [38]

I think its chlorine Im not positive but im 99.9 precent shure

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2 years ago

Can someone help please!

trasher [3.6K]

Answer:

Mixtures