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erik [133]
3 years ago
12

A ______ is a hole where the steam looks a lot like a smoke​

Chemistry
1 answer:
REY [17]3 years ago
5 0

A <u>DRY ICE</u> is hole were the steam looks a lot a smoke

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Really need help with this! Chemistry
Westkost [7]

Answer:

a) 0,5

Explanation:

If x=6 and y=2, then (2x-4y)/(x+y)=(2*6-4*2)/(6+2)=(12-8)/8=4/8= 0,5

5 0
2 years ago
How many moles are there in 7.5 L Of H2
True [87]
So multiply number of moles x number of atoms/mole = 1.8066 x 10^24 atoms of H2. One mole of any gas at STP has a volume of 22.4 L. So first determine the number of moles of gas you have.
for example do 7
7.5 \div 22.4
that 's what I think
3 0
3 years ago
Which is a heterogeneous mixture?
Valentin [98]

Answer:

I think no C or D

if wrong correct me plsssssss

Mark me brainliest plsss

Explanation:

December 21 marks the winter solstice in the Northern Hemisphere, but in 2020 the longest night of the year is also going to be a witness to an incredible astronomic event known as the “great conjunction”. ... This rare double planet sighting–or “Great Conjunction”–can be viewed from anywhere around the globe

5 0
3 years ago
Read 2 more answers
Which of the following is an electrolyte?. A) potassium chloride. B) glucose. C) water D) mayonnaise.
kenny6666 [7]
Answer A )

Potassium chloride

K+   Cl-

hope this helps!.
8 0
3 years ago
Use the following information to answer the following question.
Irina-Kira [14]

Answer:

For these problems, we need to compare the theoretical yield that we'd get from performing stoichiometry to the actual yield stated in the problem. % yield is the actual yield/theoretical yield x 100%  

Cu + 2 AgNO₠→ Cu(NOâ‚)â‚‚ + 2 Ag ==> each mole of copper yields two moles of silver  

12.7-g Cu x ( 1 mol Cu /63.5-g Cu) x ( 2 mol Ag / 1 mol Cu) x (108-g Ag / 1 mol Ag) = 43.2-g Ag. This is the theoretical yield. Now, since we got 38.1-g Ag our % yield is:  

38.1-g/43.2-g x 100% = 88.2%

Explanation:

5 0
3 years ago
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