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daser333 [38]
3 years ago
14

Convert 12.0 kilograms into grams.

Chemistry
2 answers:
CaHeK987 [17]3 years ago
7 0

Answer: 12,000 grams

430 centimeters

0.9 grams

0.07 centimeters

Explanation:

labwork [276]3 years ago
3 0
12,000 grams
430 centimeters
0.9 grams
0.07 centimeters

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Which occurs whenever valence electrons are shared or transferred between atoms?
Tanzania [10]

Whenever electrons are shared or transferred between atoms there is a chemical reaction.

The electrons that are being transferred between atoms (two or more) create new bonds, which enable the production of a new substance. This process is then known as a chemical reaction.

4 0
4 years ago
How many milliliters of water are needed to prepare a 3.5M solution of NaOH if you have .5mol of the solute
Mamont248 [21]

Answer:

1335.12 mL of H2O

Explanation:

To calculate the mililiters of water that the solution needs, it is necessary to know that the volume of the solution is equal to the volume of the solute (NaOH) plus the volume of the solvent (H2O).

From the molarity formula we can first calculate the volume of the solution:

M=\frac{solute moles}{solution volume}

Solutionvolume=\frac{solute moles}{M} =\frac{5mol}{3.5\frac{mol}{L} } =1.429L

The volume of the solution as we said previously is:

Solution volume = solute volume + solvent volume

To determine the volume of the solute we first obtain the grams of NaOH through the molecular weight formula:

MW=\frac{mass}{mol}

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Now with the density of NaOH the milliliters of solute can be determined:

d=\frac{mass}{volume}

Volume=\frac{mass}{d} =\frac{199.985g}{2.13\frac{g}{mL} } =93.88mL of NaOH

Having the volume of the solution and the volume of the solute, the volume of the solvent H2O can be calculated:

Solvent volume = solution volume - solute volume

Solvent volume = 1429 mL -  93.88 mL = 1335.12 mL of H2O

7 0
4 years ago
Which statement correctly describes a chemical equilibrium? it must take place in an open system the mass of the reactants and t
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In your choices, the best answer is the mass of the reactants and the mass of the products are no equal. The chemical equilibrium can take place in a close system and can not be affected by catalyst and is a reversible reaction. The best describe should be the concentration of reactants and products are constant.
6 0
3 years ago
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Approximately, how many days does it take for an insect to grow from an egg to an adult?
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D.)14 to 16 days ... at least for a fly with is an insect also
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8 0
3 years ago
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PLS HELPPP!!!!
prisoha [69]

Answer:

D.

Explanation:

Bohr's model represented electrons in their respective e⁻ shells. Only D fits the description.

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4 years ago
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