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Vlad [161]
4 years ago
14

Calculate the molar mass lead(ll) nitrate,Pb(NO3)2

Chemistry
1 answer:
SVETLANKA909090 [29]4 years ago
6 0
Refer periodic table
Pb= 207.2
N=14
O= 16
207.2 \: + (14 \times 2) + (16 \times 6)
=331.2gmol
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88%.

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Which of these is an example of mechanical energy transforming into heat energy?
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How to balance NH3+NO=N2+H2O
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3 0
1 year ago
A rectangular block has the following dimensions: 3.21 dm, 5.83 cm, and 1.84 in. The block has a mass of 1.94 kg. What is the de
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The density of the rectangular block in g/mL is 7.0.

<u>Given the following data:</u>

  • Mass of block = 22.8 gra1.94 kg
  • Length of block = 3.21 cm
  • Width of block = 5.83 cm
  • Height of block = 1.84 in.

To find the density of the block in g/mL:

First of all, we would determine the volume of the rectangular block by using the following formula:

Volume = length × width × height

<u>Conversion:</u>

1 in = 2.54 cm​

5.83 in = X cm

Cross-multiplying, we have:

X = 2.54(5.83)\\\\X = 14.81 \; cm

Volume = 3.21 × 5.83 × 14.81

Volume = 277.16 cubic centimeters.

<u>Note</u>: Milliliter (mL) is the same as cubic centimeters.

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Cross-multiplying, we have:

Y = 1940 grams

Now, we can find the density:

Density = \frac{Mass}{Volume}\\\\Density = \frac{1940}{277.16}

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Read more: brainly.com/question/18320053

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