Answer:
If a substance can be separated into its elements, it is a compound. If a substance is not chemically pure, it is either a heterogeneous mixture or a homogeneous mixture. If its composition is uniform throughout, it is a homogeneous mixture.
Explanation:
I hope it may help u
The statement 'photosynthesis and cellular respiration are opposite reactions' best describes the relationship between photosynthesis and cellular respiration.
<h3>What is cellular respiration?</h3>
Cellular respiration is a chemical process where foods and oxygen are used to generate ATP in aerobic conditions.
Conversely, photosynthesis is a chemical process where light and carbon dioxide are used to generate chemical energy.
In conclusion, the statement 'photosynthesis and cellular respiration are opposite reactions' best describes the relationship between photosynthesis and cellular respiration.
Learn more about photosynthesis here:
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I would say a strong base. NaOH is like chlorox
Copper reacts with Nitrogen to produce Copper Nitride
6 Cu + N₂ → 2 Cu₃N
At S.T.P
22.4 L (1mole) of N₂ reacts with = 381.24 g of Cu to produce Cu₃N
So,
33.9 L of N₂ will react with = X g of Cu
Solving for X,
X = (33.9 L × 381.24 g) ÷ 22.4 L
X = 576.96 g of Cu
As,
Moles = Mass / M.mass
Moles = 576.96 g / 63.54 g/mol
Moles = 9.08 moles of Cu
Result:
So, 33.9 L of N₂ will react with 576.96 g (9.08 moles) of Cu.
Answer:
c)4 neutrons
Explanation:
The atomic mass of Lithium is 7.
we know,
atomic mass=no. of proton+ no. of neutron
So, no. of neutron = atomic mass - no. of proton=7-3=4
Note: Atomic number is the number of protons.
Hope, this helps you.