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insens350 [35]
3 years ago
11

I need to know the measurements of this to the appropriate amount of significant figures

Chemistry
1 answer:
Vesnalui [34]3 years ago
3 0

Answer:

[See Below]

Explanation:

140 ml.

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1220 pounds / 1.45 inches =?<br> What do you get when you quadruple 22.34 cm?
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(a) 841 lb/in; (b) 89.36 cm


(a) 1220 lb/1.45 in = 841 lb/in

(b) To quadruple a measurement is to <em>multiply it by 4</em>.

     ∴ 4 × 22.34 cm = 89.36 cm

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A chemist wants to make 6.5 L of a 0.340 M CaCl2 solution. Part A What mass of CaCl2 (in g) should the chemist use? Express your
katovenus [111]

Answer:

The answer to your question is 245 grams

Explanation:

Data

Volume 6.5 L

Molarity = 0.34

mass of CaCl₂ = ?

Process

1.- Calculate the molar mass of CaCl₂

molar mass = (1 x 40) + (2 x 35.5)

                   = 40 + 71

                   = 111 g

2.- Convert the grams to moles

                       111 g of CaCl₂ -------------- 1 mol

                         x                   ---------------0.34 mol

                         x = (0.34 x 111) / 1

                         x = 37.74 g

3.- Calculate the total mass

                        37.74 g ------------------ 1 L

                            x        ------------------ 6.5 L

                            x = (6.5 x 37.74) / 1

                            x = 245.31

3 0
3 years ago
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