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suter [353]
3 years ago
10

Whats 2 + 2? correct answers only

Chemistry
2 answers:
nadya68 [22]3 years ago
8 0

Answer:4

Explanation:

spayn [35]3 years ago
3 0

9

Explanation:

cause 2 + 2 is equal to 9

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Earth rotates once every 24 hours. What does this mean?
prohojiy [21]
B- Earth completes a full spin on its axis once every 24 hours.
6 0
3 years ago
The formula K₂S indicates that _______.
Pachacha [2.7K]
The subscriot 2 means that in the formula there are two parts of K, and the subscript 1 (implicit) for S, indicates that there is one part of S.

This is, the formula gives the ratio of the elements K and S in the compound, which is:

2 atoms of K : 1 atom of S.

Answer: there are 2 atoms of K and 1 atom of S in a molecule of K2S.
5 0
3 years ago
de The below to investigate the burning of a candle study it andwer the questions that following question . What would happen to
Eddi Din [679]

Answer:

When a candle burns, the hydrogen and carbon from the wax combine with the oxygen in the air to become carbon dioxide and water vapor. Most of the matter in the candle ends up as these two gases.

7 0
3 years ago
13. Find the total number of atoms present in the following molecules. a. 5 H₂O b. Zn Cl₂​
olganol [36]

Answer:

A= 15 atoms B= 3

Explanation:

5 x 2 + 5 x 1

3 + 2 x 1

5 0
3 years ago
Is matter continuous and therefore has no finer structure or is it discontinuous and thus made or tiny particles
Marta_Voda [28]

Matter is discontinuous, and it is made of tiny particles called atoms

Explanation:

Matter is not a continuous structure, but it consists of tiny particles called atoms.

An atom consists of three types of particles:

  • Proton: the proton is in the nucleus of the atom. it has a positive electric charge of +1.6\cdot 10^{-19}C (also called fundamental charge). Its mass is 1.67\cdot 10^{-27}kg.
  • Neutron: the neutron is also in the nucleus of the atom, but it has no electric charge. Its mass is similar to the mass of the proton (slightly heavier). Neutrons and protons are held together in the nucleus through the strong nuclear force.
  • Electron: electrons are found in a "cloud" outside the nucleus. Electron has negative electric charge equal to -1.6\cdot 10^{-19}C. Its mass is much approximately 1800 times smaller than that of the proton, so it is considered as negligible.

Learn more about atoms and matter:

brainly.com/question/2757829

#LearnwithBrainly

7 0
3 years ago
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