2 years ago

Many human activities are increasing the level of the greenhouse gases in the atmosphere.

Chemistry

1 answer:

Contact [7]2 years ago

7 0

Answer:

true because of burning plants such as crops

Explanation:

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. When a person weighs himself in pounds, which system of measurement is he using?

timama [110]

Answer:

Weight is a 'force' and in the imperial system, it is measured in pounds-force (lbf or lbf). You might hear this term used together with the term 'slug'. A slug has a mass of 32.174049 lb.

Explanation:

8 0

2 years ago

Which of the following compounds will not produce O2 gas when it decomposes? (2 points)

Umnica [9.8K]

LiOH is the right answer.

6 0

2 years ago

The mass of a deuterium nucleus 21H is less than its components masses. Calculate the mass defect.________ amu

Inessa [10]

Answer:

The mass defect of a deuterium nucleus is 0.001848 amu.

Explanation:

The deuterium is:

$^{A}_{Z}X \rightarrow ^{2}_{1}H$

The mass defect can be calculated by using the following equation:

$\Delta m = [Zm_{p} + (A - Z)m_{n}] - m_{a}$

Where:

Z: is the number of protons = 1

A: is the mass number = 2

$m_{p}$ : is the proton's mass = 1.00728 amu

$m_{n}$ : is the neutron's mass = 1.00867 amu

$m_{a}$ : is the mass of deuterium = 2.01410178 amu

Then, the mass defect is:

$\Delta m = [1.00728 amu + (2- 1)1.00867 amu] - 2.01410178 amu = 0.001848 amu$

Therefore, the mass defect of a deuterium nucleus is 0.001848 amu.

I hope it helps you!

5 0

2 years ago

Read 2 more answers

Calcium chloride forms an ionic solid. how are the particles held together and arranged in the solid

Advocard [28]

Calcium chloride forms an ionic compound with a regularly arranged lattice of oppositely charged ions.

The Na+ and Cl- ions are held together by strong electrostatic forces.

Hope that helps