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Alik [6]
3 years ago
7

A container is filled with a mixture of helium (light molecules) and oxygen (heavy molecules) gases. a thermometer in the reads

22°c. which gas molecules have the greater average speed
Chemistry
1 answer:
Morgarella [4.7K]3 years ago
8 0
What is the question here?
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Any single type of substance
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Answer:

weed

Explanation:

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3 years ago
An element has the electronic configuration 1s22s22p63s23p63d104s24p65s2. identify the element.
o-na [289]
The answer is Strontium
8 0
3 years ago
What acid and alkali would react to make sodium sulphate
ludmilkaskok [199]

The acid  and alkali  that would react  to make sodium  sulfate is

alkali= sodium  hydroxide  

acid = sulphuric acid


<u><em>explanation</em></u>

Acid react  react with alkali  to form salt  and  water.

For  sodium  sulfate salt to be  formed  a sulfate acid  is required to react  with a  hydroxide  of sodium .

 therefore Sodium hydroxide (alkali)  react with sulphuric acid (an acid)  to form sodium sulfate (salt) and water.


6 0
3 years ago
Calculate the amount of heat needed to convert 50.0 g of liquid water at to steam at 100ºC.
Kipish [7]

Answer:

We need 113000 J of heat (option 2 is correct)

Explanation:

Step 1: Data given

Mass of liquid water = 50.0 grams

ΔHVap = 2260 J/g

Temperature = 100 °C

ΔHVap = The amount of heat released to change phase of a liquid water to steam = 2260 J/g

Step 2: Calculate the heat needed

Q =m* ΔHVap

⇒with Q = the amount of heat needed = TO BE DETERMINED

⇒with m = the mass of water = 50.0 grams

⇒with ΔHVap = 2260 J/g

Q = 50.0 grams * 2260 J

Q = 113000 J

We need 113000 J of heat (option 2 is correct)

6 0
3 years ago
BRAINLIEST IF CORRECT PLEASE USE WORK BONUS POINTS
cricket20 [7]

the answer is <em>a} physical and chemical changes</em>

5 0
3 years ago
Read 2 more answers
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