3 years ago

What is a unicellular organism?

Chemistry

2 answers:

Schach [20]3 years ago

3 0

An organism that consists of one cell

Paul [167]3 years ago

3 0

The answer is D An organism that consist of one cell

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3 years ago

What is the molar mass of H2(SO4)3?

nalin [4]

Answer:

Explanation:

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In the laboratory you are asked to make a 0.175 m barium iodide solution using 13.9 grams of barium iodide. How much water shoul

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<u>Answer:</u> The mass of water that should be added in 203.07 grams

<u>Explanation:</u>

To calculate the molality of solution, we use the equation:

$\text{Molality}=\frac{m_{solute}\times 1000}{M_{solute}\times W_{solvent}\text{ (in grams)}}$

Where,

m = molality of barium iodide solution = 0.175 m

$m_{solute}$ = Given mass of solute (barium iodide) = 13.9 g

$M_{solute}$ = Molar mass of solute (barium iodide) = 391.14 g/mol

$W_{solvent}$ = Mass of solvent (water) = ? g

Putting values in above equation, we get:

$0.175=\frac{13.9\times 1000}{391.14\times W_{solvent}}\\\\W_{solvent}=\frac{13.9\times 1000}{391.14\times 0.175}=203.07g$

Hence, the mass of water that should be added in 203.07 grams

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Which of these is an accurate source of evidence for an investigation?

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observations

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Anything that has mass and takes up space

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true

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