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Mkey [24]
3 years ago
10

Can someone pls help me?

Chemistry
1 answer:
kolbaska11 [484]3 years ago
7 0

Answer:

17

Explanation:

what is the independent variable

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. Which law of motion relates the action of a stretched rubber band
storchak [24]

Answer:

newtons 3rd law of motion

Explanation:

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3 years ago
Metals react with oxygen to give oxides with the general formula MxOy. What is a balanced chemical equation for the reaction of
katovenus [111]

Answer: 4Fe+3O_2\rightarrow 2Fe_2O_3

Explanation:

For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.  

Here iron is having an oxidation state of +3 called as Fe^{3+} cation and oxide O^{2-} is an anion with oxidation state of -2. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral Fe_2O_3.

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

2Fe+3O_2\rightarrow 2Fe_2O_3

8 0
3 years ago
Read 2 more answers
In North America, where is population density the highest ?
zepelin [54]

Near the coasts and Great Lakes.

3 0
3 years ago
Select the correct answer from each drop-down menu.
Grace [21]

Answer:

An SCl2 molecule has <u>polar</u> bonds and a <u>bent angular</u> molecular shape. As a result, an SCl2 molecule is <u>polar.</u>

Explanation:

It is a covalent compound made up of angular molecules that contain two chlorine atoms attached to one sulfur atom. Sulfur undergoes sp3 hybridization and has two pairs of nonbonding electrons. Given their geometry and the difference in electronegativity between chlorine and sulfur, they are molecules with a marked polar character. The bond angle between the sulfur atom and the two chlorine atoms is 109.5°, since the two vectors are of equal intensity but their directions do not coincide; if they are added vectorially, they do not cancel each other out, making the molecule polar.

6 0
3 years ago
For the reaction C + 2 H2 --&gt; CH4 how many moles of hydrogen are required to produce 10 moles of methane, CH4?
Leni [432]
  • 2moles of hydrogen required to produce 1 moles of CH_4(Methane)

Or

  • 1 mol of Methane need 2mols of hydrogen

10mol of Methane need:-

  • 10(2)
  • 20mols of hydrogen
8 0
2 years ago
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