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3 years ago

Can someone me Help please

Chemistry

1 answer:

soldier1979 [14.2K]3 years ago

8 0

Independent would be the amount of sugar given and the dependent would be the amount of cavities

Scientists have control groups so they can have evidence to show the difference between that one and the experimental ones.

And the independent variable is the one that changes because with out it changing you wouldn't get different results.

I could be wrong tho sorryyy! but i hope this helps

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How much heat is absorbed/released when 20.00 g of NH3(g) reacts in the presence of excess O2 (g) to produce NO (g) and H2O (l)

FrozenT [24]

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$moles = \frac{Mass\ taken}{Molar\ mass}$

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3 years ago

How many valence electrons does magnesium (Mg) have?Question options:A) 6B) 2C) 12D) 0

wel

INFORMATION:

We must find the number of valence electrons for magnesium

STEP BY STEP EXPLANATION:

In order to know the number of valence electrons for Mg, we need to locate the element in the periodic table

Since Mg is in the second group of the periodic table, it has two valence electrons.

ANSWER:

B) 2

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1 year ago