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Harman [31]
2 years ago
9

What is an allotrope?

Chemistry
1 answer:
Lilit [14]2 years ago
3 0
A I think but idrk I just guess sorry if you get it wrong cause of me just be careful I could be wrong
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If a gas occupies 1532.7 mL at standard temperature, what volume does it occupy at 49.4 ºC if the pressure remains constant?
ElenaW [278]

Answer:

a. 1810mL

Explanation:

When conditions for a gas change under constant pressure (and the number of molecules doesn't change), it follows Charles' Law:

\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}  where the temperatures must be measured in Kelvin

To convert from Celsius to Kelvin, add 273, or use the equation:  T_C+273=T_K

For this problem, one must also recall that standard temperature is 0°C (or 273K).

So, T_1 = 273[K], and T_2 = (49.4+273)[K]=322.4[K].

\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}

\dfrac{(1532.7[mL])}{(273[K])}=\dfrac{V_2}{(322.4[K])}

\dfrac{(1532.7[mL])}{(273[K\!\!\!\!\!{-}])}(322.4[K\!\!\!\!\!{-}] )=\dfrac{V_2}{(322.4[K]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{----})}(322.4[K]\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!\!{----})

1810.04571428[mL]=V_2

Adjusting for significant figures, this gives V_2=1810[mL]

4 0
1 year ago
How many h+ ions are present in 65. 5 mL of 0. 722 M sulfuric acid
tangare [24]

Answer:

are there answer options

Explanation:

8 0
2 years ago
Which compound is composed of oppositely charged ions? A. OCl2 B. Na2O C. NH3 D. SCl2
vazorg [7]
It would be B, so yeah hope that helps ya ;)

5 0
3 years ago
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Write sentences that completely describe each of the chemical reactions shown in these skeleton equations. 11.1
Natasha2012 [34]
Please upload a photo of your question!
6 0
3 years ago
Hematite is a naturally occurring mineral and a common form of iron ore. The following statements describe physical and chemical
Oksanka [162]
<h2>Answer : Option B) The hematite particles rearrange to form a new substance.</h2><h3>Explanation :</h3>

Hematite particles when gets rearranged to form a new substance,  is an example of a chemical change.

As a chemical changes is usually a change where a substance undergoes a chemical change and forms a new substance; which cannot be easily reversed into reactants by any simple physical methods.

In this example the hematite ore forms a new substance by an irreversible chemical change.

8 0
3 years ago
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