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ryzh [129]
2 years ago
12

The photo shows wires made of pure copper, an element,

Chemistry
1 answer:
Strike441 [17]2 years ago
3 0
I can’t see the picture but a atom I think
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Equal masses (in grams) of hydrogen gas and oxygen gas are reacted to form water. Which substance is limiting?
Sonbull [250]

Answer:

a. Oxygen gas is limiting

Explanation:

hydrogen gas and oxygen gas are reacted to form water

2H₂ + O₂  →  2H₂O

the above balanced equation shows that 2 moles of H₂ is required for 1 mole of O₂

Given equal masses of H₂ and O₂

assuming 'x' gm for each, no. of moles of each gas  =

no. of moles of H₂ = x/2 = 0.5x moles

no.of moles of O₂ = x/32 = 0.031x moles

This shows that no. of moles of O₂ is very less so O₂ will become the limiting reagent.

3 0
3 years ago
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Whose main job is to break down sugar to release energy that a plant cell can use?
Tasya [4]

Answer:

The Mitochondria

Explanation:

Mitochondria are membrane-bound cell organelles that generate most of the energy required to power the cell's organic chemistry reactions. Energy created by the mitochondria is kept in a tiny molecule known as  adenosine triphosphate (ATP).

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3 years ago
what do Mars, Mercury, and Venus have in common? A. They have a gas surface composition and a thick atmosphere. b They have many
mario62 [17]

Answer:

the best guess would have to be C

3 0
2 years ago
Atoms full valence electron shells are chemically stable. Most noble gases have eight valence electrons. So, one bottle for chem
kap26 [50]
Gain or lose.
The exchange of electrons in chemical bonding seeks to fulfill the octet rule. There are some exceptions, such as with hydrogen and helium, whose valence shells have a capacity of two electrons.
6 0
3 years ago
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What must be true of a disproportionate substance?
Rudik [331]

Answer:

Answer is D.it gains and loses electrons.

Explanation:

I hope it's helpful!

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3 years ago
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