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olya-2409 [2.1K]
2 years ago
5

What is the coldest temperature ever achieved?

Chemistry
2 answers:
Georgia [21]2 years ago
8 0
For the whole world, the lowest temperature on earth was recorded at -128.6 degrees in Russia. This was in July of 1983
kupik [55]2 years ago
5 0

Answer:

The lowest natural temperature ever directly recorded at ground level on Earth is −89.2 °C

-273.144 degrees celsius. This is close to 'absolute zero', which is equal to -273.15 degrees celsius

Explanation:

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A box is sitting on a table. The upward force exerted on the box that stops it from falling through the table is known as the __
romanna [79]

It is know as the normal force.


When a solid is placed on a support, the latter exerts forces on the solid at each point of contact. These are forces that oppose the weight and prevent an object from falling.

This force is usually vertical and upward and often offsets the weight. If the solid is in equilibrium on the support the forces compensate the weight of the solid.

6 0
3 years ago
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Can you tell the difference between an element and compound by measuring mass and volume?
vivado [14]
Yes, you can!




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8 0
3 years ago
Find the number of grams in 16.95 mol hydrogen peroxide (H2O2). Round your
Feliz [49]

Answer: There are 576.46 number of grams present in 16.95 mol hydrogen peroxide (H_{2}O_{2}).

Explanation:

Number of moles is defined as the mass of substance divided by its molar mass.

The molar mass of H_{2}O_{2} is 34.01 g/mol. Hence, mass of hydrogen peroxide present in 16.95 moles is calculated as follows.

Moles = \frac{mass}{molarmass}\\16.95 mol = \frac{mass}{34.01 g/mol}\\mass = 576.46 g

Thus, we can conclude that there are 576.46 number of grams present in 16.95 mol hydrogen peroxide (H_{2}O_{2}).

3 0
3 years ago
Help!! < PHYSICAL SCIENCE>
Vlad1618 [11]
The answer is B or the second answer
3 0
3 years ago
Empirical formula of a compound is CH3. If the molar mass of the
Nonamiya [84]

Answer:

Explanation:

                             HERE WE TAKE CH3,

                      C = 1 × 12 = 12g

                      <u> H₃= 3 × 1  = + 3g</u>

                          CH3       =15 g ans  

7 0
3 years ago
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