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ratelena [41]
3 years ago
15

Hey can u help me with my hw? I’ll send a pic.

Chemistry
1 answer:
Aleonysh [2.5K]3 years ago
3 0
Maybe I guess if I know how
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Is acid rain exothermic or endothermic?
trasher [3.6K]

Answer:

in the presence of water, a strong acid will dissociate quickly and release heat, so it is an exothermic reaction.

Explanation:

7 0
3 years ago
What’s the answer I don’t know how to do it
Inessa05 [86]

Answer:

3.63m/s²

Explanation:

Given parameters:

Mass of box  = 8kg

Net force  = 29N

Unknown:

Acceleration of the box = ?

Solution:

To solve this problem, we use Newton's second law of motion which is stated as;

       Force  = mass x acceleration

 Acceleration  = \frac{Force }{mass}   = \frac{29}{8}  

Acceleration  = 3.63m/s²

5 0
3 years ago
An object moving at 96 m/s takes 4 s to come to a stop. What is the object’s acceleration?
Hoochie [10]

Answer:

-24 m/s²

Explanation:

a = v - u / t

  = 0 - 96 / 4

  = -24 m/s²

7 0
2 years ago
A chemist prepares a solution of aluminum sulfite by measuring out 109 umol of aluminum sulfite into a 350 mL volumetric flask a
Lelu [443]

Answer:

0.311 mmol/L

Explanation:

109  μmol = 109*10^(-6) mol

109*10^(-6) mol = 109*10^(-6) mol*(10^3 mmol/1mol) = 109*10^(-3) mmol =

=0.109 mmol

350 mL = 0.350 L

0.109 mmol/0.350 L = 0.311 mmol/L

6 0
4 years ago
Uranus is much larger than Earth, with a surface area of 8.10 × 1015m2 with an atmosphere of low-density gases: 82.5% H2, 15.2%
sdas [7]

Answer:

mass of Uranus: 9.31x10^22 kg

Explanation:

As I stated in the comments, the question in this problem is to calculate the mass of Uranus, given it's conditions.

Now, we have the data of the atmosphere gases, but for calculations, this data is irrelevant.

To calculate the mass of Uranus, we can use the second law of Newton which is:

F = m * a (1)

In this case, the only Force exerting here would be the weight so:

F = m * g (2)

And the force of Uranus, can also be expressed in terms of pressure and Area so:

F = P * S (3)

Now, if we replace (3) in (2) we have:

P * S = m * g

Solving for m:

m = P * S / g (4)

We have all the data, therefore, let's replace it in the above expression to calculate the mass of Uranus:

m = 1x10^8 * 8.1x10^15 / 8.7

m = 9.31x10^22 kg

This is the mass of Uranus

8 0
4 years ago
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