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aksik [14]
3 years ago
11

What is the mole ratio between H2O and O2

Chemistry
1 answer:
Bess [88]3 years ago
3 0
The balanced equation is 2H2 + O2 –> 2 H2O. It takes two hydrogen atoms for every oxygen atom to produce this reaction, so the mole ratio between hydrogen and oxygen is 2:1

Answer is 2:1
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solniwko [45]

The charge of the ion is +1

5 0
3 years ago
A 17.98-g piece of iron absorbs 2056.5 joules of heat energy, and its temperature changes from 25°C to 200°C. Calculate the spec
V125BC [204]

Answer: 0.65\ J/g.^{\circ}C

Explanation:

Given

Mass of iron piece is m=17.98\ g

Heat absorbed Q=2056.5\ J

Temperature changes from 25^{\circ}C\ to\ 200^{\circ}C i.e.

\Delta T=200-25=175^{\circ}C

Heat absorbed is given by Q=mc\Delta T\quad [c=\text{specific heat of material}]

Insert the values

\Rightarrow 2056.5=17.98\times c\times 175\\\\\Rightarrow c=\dfrac{2056.5}{3146.5}\\\\\Rightarrow c=0.65\ J/g.^{\circ}C

Thus, the specific heat of iron is 0.65\ J/g.^{\circ}C

7 0
3 years ago
Identify the element of Period 2 which has the following successive ionization energies, in kJ/mol. IE1, 1314 IE2, 3389 IE3, 529
Elan Coil [88]
It’s fluorine it has a big jump from the 6th to 7th ionisation energy.

It’s electronic configuration is 1s2 2s2 2p5 as it has 9 electrons and 7 electrons in outermost shell.

Therefore it’s in group 7, as after the 7 electrons are removed, the 8th electron is removed from a quantum shell closer to the nucleus.

This results in greater ionisation energy due to stronger electrostatic forces of attraction between positively charge nuclei and electrons ( + shorter distance)
6 0
3 years ago
What is the empirical formula of an oxide of nitrogen containing 63.61% by mass of nitrogen and 36.69% by mass of oxygen?
katen-ka-za [31]

Answer:

D. N₂O

Explanation:

Let's assume we have 100 g of the compound.  That means it consists of 63.61 grams of nitrogen and 36.69 grams of oxygen.

Converting masses to moles:

63.61 g N × (1 mol N / 14.01 g N) = 4.540 mol N

36.69 g O × (1 mol O / 16.00 g O) = 2.293 mol O

Normalize by dividing by the smallest:

4.540 / 2.293 = 1.980 mol N

2.293 / 2.293 = 1.000 mol O

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8 0
3 years ago
Which solution whose POH is 12
lesya692 [45]

Answer:

d

Explanation:

H3O =1×10_12=12 ooh is 12

3 0
2 years ago
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