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liraira [26]
3 years ago
14

Which chemical change is most likely to involve bubbling or an odor? A. temperature decrease B. color change C. gas production D

. precipitate formation
Chemistry
1 answer:
weqwewe [10]3 years ago
6 0

C is the right answer

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Nitric acid with a concentration of 1mol/dm has a pH
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Water is neutral with ph 7. when we add water to acidic solution, it will be less acidic. so the pH of acid increases
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2 years ago
A chemist adds 485 mL of a 0.0025 mol/L calcium sulfate solution to a reaction flask. Calculate the mass in grams of calcium sul
viva [34]

Answer : The mass in grams of calcium sulfate is 0.16 grams.

Explanation :

Molarity : It is defined as the number of moles of solute present in one litre of solution.

Formula used :

Molarity=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution}}

Solute is, CaSO_4

Given:

Molarity of CaSO_4 = 0.0025 mol/L

Molar mass of CaSO_4 = 136 g/mole

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Now put all the given values in the above formula, we get:

0.0025=\frac{\text{Mass of }CaSO_4\times 1000}{136\times 485}

\text{Mass of }CaSO_4=0.16g

Thus, the mass in grams of calcium sulfate is 0.16 grams.

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3 years ago
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zheka24 [161]

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Blank 1: varying

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