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3 years ago

PLZ I NEED THIS NOW A chemical change can also be called a chemical _________.

Chemistry

2 answers:

Sonbull [250]3 years ago

8 0

Chemical reaction I believe because a change in a chemical is the chemical reacting.

posledela3 years ago

6 0

A chemical change can also be called a chemical reaction

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Why is the Universal Law of Gravitation is a scientific Law and not a theory?

scoundrel [369]

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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

Volume of solution = 485 mL

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

Consider this reaction: KOH + HBr - KBr + H20<br> Which statement is most likely true about HBr?

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Answer: It turns blue litmus red

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2 years ago

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Which organic compound is correctly matched with the subunit that composes it?

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2 years ago

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Mashcka [7]

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The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas. Liquids are represented by (l) and gases are represented by (g).

The balanced chemical reaction is :

$CaCO_3(s)+2HNO_3(aq)\rightarrow Ca(NO_3)_2(aq)+CO_2(g)+H_2O(l)$

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2 years ago