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Leno4ka [110]
4 years ago
8

1. If a liter of water is heated from 20°C to 50°C, what happens to its volume?

Chemistry
1 answer:
shtirl [24]4 years ago
7 0

Answer:

it could be c or d.  C is more correct

Explanation:

This question is very unclear. Does the water cool off? No?

If the water stays at 50 degrees C, then the volume increases. This is because rising temperature causes particles to separate and expand, moving faster.

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ahrayia [7]
Properties of a compound is completely different from their elements.

Water is composed by hydrogen and oxygen.

For example, the boiling point of oxygen is - 183 °C and hydrogen is - 253 °C, meanwhile, water has a boiling point of 100°C

Another example is when you put a burning wooden splint into oxygen, it burns more brightly. Put it in hydrogen, you may hear a "pop" sound, or even explode when large amount of hydrogen. But if u put a burning splint in water, it goes off.
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3 years ago
How many moles of oxygen are in 1 mole of Fe(NO3)3?
goldfiish [28.3K]
<span> There are 97.2 mol of O in 10.8 mol of Fe(NO3)3</span>
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a compound is 21.20% nitrogen,6.06% hydrogen, 24,30% sulfur, and 48.45% oxygen. write the empirical formula and name the compoun
IRISSAK [1]

The numbers may be off by a few, if you worked it out, since my periodic table is for AP chemistry. Hope this helps!!!

4 0
4 years ago
Be sure to answer all parts.The combustion of a 40.0−g gaseous mixture of H2 and CH4 releases 3766 kJ of heat. Calculate the amo
Svetach [21]

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CH4=28.6g

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Since the mixture contains 40gof CH4 and 2, therefore 20g of CH4 and 8g of H2 combines.

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Mass of CH4=20/28×40=28.6g

2H2=8/28×40=11.4g

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