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Chemistry

1 answer:

rodikova [14]3 years ago

7 0

The real answer is B

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Which is NOT a control in the following experiment?: An experiment was performed to determine how the amount of coffee grounds c

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The same kind of coffee, the same coffee maker, the same amount and type of water, and the same electrical sources were used.

Explanation:

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3 years ago

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lord [1]

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D.5,55cm+/-0,005cm

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so this is the answer

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3 years ago

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3 years ago

202H8(9) + 7 O2(g) > 4CO2(g) + 6 H2O(9).

lilavasa [31]

since the concentration of Carbon Dioxide will increase, it would make Q > K, cause equilibrium to shift in the direction with less moles of gas to alleviate the extra pressure. In this case, the reaction will shift left because there are fewer moles of gas present.

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3 years ago

The formula ca(no3)2 tells us that one formula unit of this compound is composed of ________ calcium atoms, ________ nitrogen at

ad-work [718]

Answer:- The formula $Ca(NO_3)_2$ tells us that one formula unit of this compound is composed of one calcium atom, two nitrogen atoms, and six oxygen atoms.

Explanations:- Subscripts tell us about the number of atoms of the element for which they are used. For example, here the subscript of Ca is one, it means there is one calcium atom in the given one formula unit.

When we have subscripts inside and outside the parenthesis then they are multiplied and the outside subscript is considered for all the atoms present inside the parenthesis.

Here, for the given chemical formula, the subscript of N is 1 and the subscript present outside is 2. So, 1 x 2 = 2 and for oxygen, 3 x 2 = 6

So, we have one calcium atom, two nitrogen atoms and six oxygen atoms for one formula unit of given compound.

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3 years ago

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