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nignag [31]
3 years ago
14

How high or low a sound; is depends on the frequency of a wave

Chemistry
1 answer:
Fudgin [204]3 years ago
4 0
How low or high a sound is, is determined by the frequency of sound waves. Amplitude.
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How to do question no 17
Tcecarenko [31]

Explanation:

even I don't know this answer

but maybe you can solve it by putting the formula

4 0
3 years ago
Hexane and hexene are hydrocarbon compounds from different homologous series. the combustion of these two compounds produce diff
AURORKA [14]

Answer:

Percentage of carbon of alkene is higher compared to the alkane that has the same number of carbon per molecule. Because of this, combustion of alkene will produce more sooty flame compared to their corresponding alkane and because Alkenes have a higher percentage of carbon compared to their corresponding alkane.

Explanation:

Relative atomic mass : C= 12 and H=1

Percentage of Carbon Hexane (C6H14)

Percentage of Carbon = 83.7 percent

6(12) x 6(12) +14(1) x 100 percent= 83.7 percent

Percentage of Carbon Hexene = 85.7 percent

7 0
4 years ago
Rahul was given iron filings and sulphur powder. He prepared a compound of iron sulphide by heating the components in a china di
Sav [38]

Answer:

A gas with a rotten egg smell is evolved

Explanation:

When iron fillings and sulphur were heated in the vessel, the following chemical reaction took place;

Fe(s) + S(s) -----> FeS(s)

This is a direct combination reaction.

Subsequently, when dilute H2SO4 is added, the following reaction takes place;

FeS(s) + H2SO4(aq) ------> FeSO4(aq) + H2S(g)

He immediately observes the evolution of a gas with a rotten egg smell.

3 0
3 years ago
How many atoms are there in 8.08 moles of carbon dioxide
sertanlavr [38]

Answer:

145.97×10²³ atoms

Explanation:

Given data:

Number of moles of CO₂ = 8.08 mol

Number of atoms of CO₂ = ?

Solution:

1 mole of CO₂ contain 1 mole C atom.

8.08 mole contain 8.08× 1 = 8.08 mole of C atom.

1 mole of CO₂ contain 2 moles of O atom.

8.08mole contain 8.08×2 = 16.16 mole of O atom.

Total number of moles of atoms = 8.08 mole + 16.16 mole

Total number of moles of atoms = 24.24 mol

Number of atoms of CO₂:

1 mole of any substance contain 6.022×10²³ atoms.

24.24 mol ×6.022×10²³ atoms / 1 mol

145.97×10²³ atoms

7 0
3 years ago
Explain the difference between Carbon-9 and Carbon-14. Which version Carbon do you believe is the most stable? Why? What informa
qwelly [4]

correct form of question is

Explain the difference between Carbon-12 and Carbon-14. Which version Carbon do you believe is the most stable? Why? What information could help you confirm your prediction?

Answer:

Carbon has three isotopes those are carbon- 12 , carbon - 13 , carbon-14 among these only C-12 and C-13 are stable while C-14 is radioactive.

C-12 has 6 protons and 6 neutrons , C-14 has 6 protons and 8 neutrons. Atoms with equal number of protons and electrons are generally stable however C-12 and C-14 have 6 electrons but due to excess neutrons present in C-14 makes it undergo radioactivity therefore it is unstable.

7 0
3 years ago
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