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Nana76 [90]
4 years ago
12

Helppp!!!!!! pleaseeee

Chemistry
1 answer:
Ugo [173]4 years ago
5 0

Answer:

A

Explanation:

you need to make a punnent squere

  L    L

l  Ll   Ll

l   Ll   Ll

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you are given an unknown gaseous binary compound. when 10.0g of the compound isburned in excess oxygen, 16.3g of water is produc
Flauer [41]
Since the compound has 1.38 time that of oxygen gas at the same conditions of temperature and pressure, we have the relationship:
MW/MWoxygen = 1.38
MW = 44.16

Since there is water formed during the reaction, the formula of the compound must be:
XaHb
where a and b are the coefficients of each element.

If the compound reactions with oxygen forming water and an oxide of the element X, the combustion reaction must be:
XaHb + ((2a + (b/2))/2) O2 = a (XO2) + (b/2)(H2O)
Using dimensional analysis:
10 (1/44.16) (b/2 / 1) (18) = 16.3
Solving for b:
b = 8

The compound now is XaH8. Most probably, the compound is C3H8 since it has a molecular formula of 44 and it reacts with O2 to form water and CO2.
5 0
3 years ago
_______ particles move very fast and freely.<br><br> A.Gas<br><br> B.Solid<br><br> C.Liquid
inn [45]
The answer is A. Gas particles!
6 0
3 years ago
Where are the least reactive elements on the periodic table?
FinnZ [79.3K]
Helium is the least reactive because it has the least protons
8 0
3 years ago
Which type of renewable energy creates electricity by using water currents to spin a turbine?
vovangra [49]

Answer:

Hydropower

Explanation:

I learn whenever Hydro is in a word it means water

Also in the question it is talking about water and wind, solar, nor Biomass has anything to do with water, so you can use the process of elimination and find you will only have Hydropower left.

Hope this helps

3 0
3 years ago
Find the volume (in mL) of a substance that has a mass of 11.6 g and a density of 0.81 g/mL. Give your answer with two decimals.
ch4aika [34]

Answer:

14.83mL

Explanation:

11.6/0.81=14.3

7 0
3 years ago
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