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svetlana [45]
3 years ago
13

Balance the following equation____H2 + ____O2 → ____H2O

Chemistry
1 answer:
Snezhnost [94]3 years ago
3 0

Answer:

2

Explanation:

Since it has to be 2H2+02→2H20 for it to be balanced.

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What is the number of electrons will chlorine most likely gain/lose
LuckyWell [14K]

Gain 1.

This is because of Chlorine's placement on the periodic table. Chlorine is a Halogen, thus being located in group 17 or 7A. This means it is one of the closest elements to being a Noble Gas or group 18/8A.

Chlorine has 7 valence electrons, and in order for it to become a Noble Gas, it needs 8. Cl- is typically the symbol used to represent this as Chlorine needs to gain an electrons instead of lose; once Chlorine gains the electron, it will be stable.

This also means that Chlorine has a high ionization energy or, in simpler terms, it would be difficult to remove an electron from Chlorine.

Hope this helps!

8 0
4 years ago
_____________________ are trying to create better batteries that can store more energy, so that electric cars can travel further
lidiya [134]

Answer:

options?

Explanation:

i mean scientists fits so if any of the options have a scientist thats it

8 0
2 years ago
Read 2 more answers
4. Consider a 33.0 mL solution containing 0.0758 M NaF and 0.0955 M HF. What is the total number of moles of HF after the additi
Ostrovityanka [42]
Buffer solution resist the change in pH upon addition of small amount of strong acid or strong base.
Buffer consists of weak acid as HF / and its conjugate base NaF
When strong acid as HCl is added to buffer, it respond with its conjugate base to convert the strong acid to weak acid like this:
HCl (S.A) + NaF → NaCl + HF (W.A)
moles of HF we already have = M * V(in liters)
                                                = 0.0955 M * 0.033 L = 3.15 x 10⁻³ mole
moles of HCl added = 8.00 x 10⁻⁵ mole
one mole HCl reacts with 1 mole NaF to give 1 mole HF
so the amount added to HF = 8.00 x 10⁻⁵
Total moles of HF present = (3.15 x 10⁻³) + (8.00 x 10⁻⁵) = 3.23 x 10⁻³ mole

4 0
3 years ago
Four properties of water are listed. It reacts with halogens to form oxygen gas as one of the products. It is transparent and ta
Bezzdna [24]

Chemical property is the property of the substances that describes the ability of the substance to involve in chemical reactions. Physical property is that which does not change the chemical composition of the substances. The following properties of water that it is transparent and tasteless in its pure form and it freezes at a temperature of 0^{0}C are physical properties as they simply indicate the change in physical state without any change in chemical composition of water.

The other two properties that water reacts with halogens to form oxygen gas as one of the products and water decomposes to form hydrogen and oxygen are chemical properties as the chemical composition of water changes in the given reaction.

Therefore the correct answer is b. 1 and 4

8 0
4 years ago
How do everyday activities like driving a car and using electricity lead to global warming
Lapatulllka [165]
Ahh. The chain reaction.
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You know when you are surfing the web, your parents tell you, or you surf the web, that you see some things like "STOP GLOBAL WARMING?" 
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Yep, I have, at least.
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Well, let's see about the chain reaction...
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You see, where does our energy come from? 
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Yes, windmills and solar cells...
.
but also nuclear and power plants, no?
.
The power plants emit carbon dioxide that contribute to global warming.
.
Now, cars do the same. One car may not seems like a lot of carbon dioxide... 
.

.
But... this many cars multiplied by 9 trillion times 9 trillion and much more... is...

<span>
</span>.
Well, you know the difference.
.
They contribute to global warming over a period of time, slowly, because they emit carbon monoxide/dioxide.
4 0
3 years ago
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