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Doss [256]
3 years ago
10

Which statement(s) is/are true? Energy

Chemistry
1 answer:
Anna007 [38]3 years ago
3 0

Answer:

D

Explanation:

it's not c because energy can't disappear or be destroyed so that makes E wrong

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Who first argued that all matter is made up of particles so small that they could not possibly be divided
anyanavicka [17]
It’s A dalton he is the one who figured out matter
4 0
3 years ago
Calcula la cantidad de gramos que hay en 12,5 mol de NaCl (Masa Na: 23,0; Cl: 35,5).
Anon25 [30]

Answer:

731.25 g

Explanation:

The question asks us to calculate the mass of 12.5 moles of NaCl. The individual relative atomic masses of the elements were supplied. We must first obtain the molar mass of sodium chloride as follows;

Molar mass of sodium chloride= 23.0 + 35.5 = 58.5 gmol-1

From the formula;

Number of moles (n) = mass /molar mass

Number of moles of sodium chloride= 12.5 moles

Mass of sodium = The unknown

Molar mass of sodium chloride= 58.5gmol-1

Mass of sodium chloride= number of moles × molar mass

Mass of sodium chloride= 12.5 × 58.5

Mass of sodium chloride= 731.25 g

4 0
3 years ago
How are white blood cells linked to the lymphatic system?
Anon25 [30]

Answer:

The lymphatic system produces white blood cells, known as lymphocytes. There are two types of lymphocyte, T cells and B cells. They both travel through the lymphatic system. As they reach the lymph nodes, they are filtered and become activated by contact with viruses, bacteria, foreign particles, and so on in the lymph fluid.

Explanation:

4 0
3 years ago
1. How is the number of energy levels in an atom related to the period number?
Natalka [10]

Answer:

The highest energy level number (1 through 7) for the electrons in an atom corresponds to the period (or row) in the periodic table to which that atom belongs. Because there are 7 periods in the table, there are 7 energy levels. For example, hydrogen (H) is in the first period, so it has only one energy level.

4 0
3 years ago
Which term is defined as the phase change from gas to liquid?.
skad [1K]
Condensation.

If you think about the condensation you may find on your windows on a frosty morning, this may help you to remember :]
5 0
2 years ago
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