Your little sister asks you a scientific question: "Does chocolate milk come from

Chemistry

1 answer:

mario62 [17]2 years ago

4 0

Answer:

The given statements are not effective hypotheses

Explanation:

Given that,

Your little sister asks you a scientific question:

"Does chocolate milk come from brown cows?"

We know that,

The chocolate milk does not come from brown cows.

We need to find the given statement is effective hypotheses

According to given statement,

The following statements are not effective hypotheses because all cows give the white milk.

So, we can say that, we mix the chocolate powder in the milk then we get the chocolate milk.

Hence, The given statements are not effective hypotheses

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An air mass of volume 6.5 x 10 to the fifth L starts at sea level, where the pressure is 775 mm HG. It rises up a mountain where

lisabon 2012 [21]

From Boyle's law the volume of a fixed mass of a gas is inversely proportional to temperature at constant absolute temperature.
Thus, Vα1/P
= V = k/P where k is a constant
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2 years ago

a radiator is filled with a mixture of 3.25kg ethylene glycol (C2H6O2) in 7.75kg of water. calculate the molality of this questi

Vladimir [108]

3.25 kg in g = 3.25 * 1000 = 3250 g

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Mass solvent = 7.75 kg

Number of moles:

n = mass solute / molar mass

n = 3250 / 62.0

n = 52.419 moles

Molality = moles of solute / kilograms of solvent

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hope this helps!

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2 years ago

Which statements describe lattice energy?

gtnhenbr [62]

Answer:

It is the energy the ions absorb when they form a crystalline compound.

Explanation:

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If 200.0 g of copper(II) sulfate react with an excess of zinc metal, what is the theoretical yield of copper? 1.253 g 50.72 g 79

Helen [10]

1)we need a balanced equation: CuSO₄ + Zn ---> ZnSO₄ + Cu

2) we need to convert the grams of CuSO₄ to moles using the molar mass.

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3) convert moles of CuSO₄ to moles of Cu

$1.25 mol CuSO_4 ( \frac{1 mol Cu}{1 mol CuSO_4} )= 1.25 mol Cu$

4) convert moles of Cu to grams using it's molar mass.

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$1.25 mol (\frac{63.5 grams}{1 mol} )= 79.4 grams Cu$

I did it step-by-step as the explanation but you can do all of this in one step.

$200.0 g CuSO_4 ( \frac{1 mol CuSO_4}{160 g} ) ( \frac{1 mol Cu}{1 mol CuSO_4} ) ( \frac{63.5 grams}{1 mol Cu} )= 79.4 grams Cu$

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2 years ago

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2 years ago