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Papessa [141]
3 years ago
9

A sample of argon gas has a volume of 698.7l. The temp is decreased to 24.8c and the volume also decreases to 499.1l. What was t

he original temp
Chemistry
1 answer:
Rina8888 [55]3 years ago
4 0
ASsfh 977. Hoon mein
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Potassium
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  • We observe that hydrogen burns at mouth of beaker with blue flame and pop sound is heard. It is a chemical change.
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Which statement best compares and contrasts two physical properties of matter? Density and solubility are similar because they b
mash [69]
I believe the correct answer would be that b<span>oiling points and melting points are similar because they both involve the change in a state of a material, but they are different because boiling point involves a change from a liquid to a gas and melting point involves a change from a solid to a liquid. Boiling and melting are phase changes that can happen to a substance however they differ in the process that happens.</span>
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The kilogram is the SI unit for mass
Leno4ka [110]

Answer:

yes

Explanation:

SI unit of mass is kilogram.

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3 years ago
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A sample of an unknown solid is found to have a volume of 24.3 cm3 and a mass of
blondinia [14]
<h2>Answer:  8.93 g/cm³ </h2>

<h3>Explanation: </h3>

Density = mass ÷ volume  

           = 217.0 g ÷ 24.3 cm³  

           = 8.93 g/cm³

∴ the unknown sample of mass 217.0 grams and volume of 24.3 cm³ has a density of 8.93 g/cm³.

5 0
2 years ago
Consider the following system at equilibrium at 723 K: 2 NH3 (g) 26.6 kcal N2 (g) 3 H2 (g) Indicate whether each individual chan
ZanzabumX [31]

Answer:

- To increase the temperature as it is a reactant in terms of its endothermicity.

- To remove it will enable more space for the reactant to favor its production.

- To add more reactant in order to increase its equilibrium concentration.

Explanation:

Hello,

The undergoing chemical reaction is:

2NH_3(g)\rightleftharpoons 3H_2(g)+N_2(g)

Thus, in order to intensify the amount of nitrogen as the chemical reaction is endothermic, considering the Le Chatelier's principle we state:

- To increase the temperature as it is a reactant in terms of its endothermicity.

- To remove it will enable more space for the reactant to favor its production.

- To add more reactant in order to increase its equilibrium concentration.

Best regards.

4 0
3 years ago
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