3 years ago

HELP ME PLSSS:(((

Chemistry

1 answer:

zhenek [66]3 years ago

4 0

Answer:

Explanation:

The area of a shape is the amount of space a 2-dimensional shape covers. It's measured in units squared (units²). So, the answer is D.

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What is the final concentration (M) of a solution prepared by diluting 50.0 mL of a solution to a volume of

docker41 [41]

0.600
D) 0.600 is the final concentration of the solution of KCl.
V1 = 50.0 mL.

6 0

2 years ago

Mass box A = 10 grams; Mass box B = 5 grams; Mass box C—made of one A and one B

eimsori [14]

2 boxes of A
Because C = A + B
2 of A = 20 grams
at the other hand we have 2 of B = 10
So 20 + 10 = 30 grams

3 0

3 years ago

To determine the concentration of chloride ion (Cl-) in a 100 mL sample of ground water, a chemist adds a large enough volume of

Orlov [11]

Answer:

$[Cl^-]=232.3\frac{mgCl^-}{L}$

Explanation:

Hello,

In this case, we can represent the chemical reaction as:

$Cl^-(aq)+AgNO_3(aq)\rightarrow AgCl(s)+NO_3^-(aq)$

In such a way, since the mass of the obtained silver chloride is 93.9 mg, we can compute the chloride ions in the ground water by using the following stoichiometric procedure whereas the molar mass of chloride ions and silver chloride are 35.45 g/mol and 143.32 g/mol respectively:

$m_{Cl^-}=93.3mgAgCl*\frac{1mmolAgCl}{143.32mgAgCl}*\frac{1mmolCl^-}{1mmolAgCl} *\frac{35.45mgCl^-}{1mmolCl^-} =23.23mgCl^-$