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faust18 [17]
3 years ago
8

Can someone please help me on these? I would like a simple answer, as I'm waiting on someone to get back but they can't come for

two more weeks and I need help now.
Thank you in advance <3 <3

Also this one wouldn't fit in

6) A chunk of limestone, which is calcium carbonate, reacts with acid at a certain rate. If the limestone were crushed, the rate of reaction between the acid and the limestone would ______________.

Biology
1 answer:
scoray [572]3 years ago
7 0
1. 186.6 g (C)

2. 24

3. Synthesis

4. Endothermic

5. Rate

6. Accelerate

Hope this helps! Enjoy! <span />
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How many grams are NaCl are required to prepare 200 mL of a 3.10 M solution?
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The mass (in grams) of NaCl required to prepare the solution is 36.27 g

<h3>What is molarity?</h3>

Molarity is defined as the mole of solute per unit litre of solution. Mathematically, it can be expressed as:

Molarity = mole / Volume

<h3>How to determine the mole of NaCl</h3>
  • Volume = 200 mL = 200 / 1000 = 0.2 L
  • Molarity = 3.1 M
  • Mole of NaCl =?

The mole of NaCl in the solution can be obtained as follow:

Molarity = mole / Volume

Cross multiply

Mole = Molarity x Volume

Mole of NaCl = 3.1 × 0.2

Mole of NaCl = 0.62 mole

<h3>How to determine the mass of NaCl </h3>

We can obtain the mass of NaCl needed to prepare the solution as follow:

  • Molar mass of NaCl = 58.5 g/mol
  • Mole of NaCl = 0.62 mole
  • Mass of NaCl = ?

Mole = mass / molar mass

Cross multiply

Mass = mole × molar mass

Mass of NaCl = 0.62 × 58.5

Mass of NaCl = 36.27 g

Learn more about molarity:

brainly.com/question/15370276

#SPJ1

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