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scoray [572]
3 years ago
5

The measure of angle BAC can be cakulated using the

Chemistry
1 answer:
AlekseyPX3 years ago
5 0
44 degrees i believe if u use equation in the question
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What is the total number of oxygen atoms on the right-hand side of this chemical equation?
vivado [14]

The chemical equation is

Cu(s) +4HNO3(aq) ⇒ Cu(NO3)2(aq) + 2NO2(g) + 2H2O(g)

Answer:

12

Explanation:

In the right hand side of the equation, there are three compound which contains O2, which are;

Cu(NO3)2 , number of oxygen atoms =3*2 =6

2NO2, number of oxygen atoms = 2*2=4

2H2O, number of oxygen atoms =2*1=2

Total number of oxygen atoms on the right side of equation = 6+4+2 =12

8 0
3 years ago
Which phrase defines altitude?
brilliants [131]
The height of a given point
4 0
3 years ago
How do you correctly read a graduated cylinder
Usimov [2.4K]
See where the liquid or whatever you're measuring meets with the numbers! And thats your answer!
7 0
4 years ago
In a thin layer chromatography experiment, a plate of length 9.3 cm was used and a horizontal line was made at 1.45 cm above the
dezoksy [38]

Answer: The R_f value is 0.664

Explanation:

Distance travelled by solvent front = (7.7-1.45)cm = 6.25 cm

Distance travelled by unknown = (5.6-1.45) cm = 4.15 cm

 The retention factor or the R_f value is defined as the ratio of distance traveled by the unknown to the distance traveled by the solvent front.

R_f=\frac{\text {distance travelled by unknown}}{\text {distance travelled by solvent}}

R_f=\frac{4.15}{6.25}=0.664

Thus the R_f value is 0.664

6 0
3 years ago
7. Wind, moving water, falling rocks, and roller-skating children are all examples of -​
cluponka [151]

Answer:

kinetic energy

the is because all of them are moving at once

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3 years ago
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