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inysia [295]
2 years ago
12

3. A girl ran 105 metres in 15 seconds. What was her speed

Chemistry
1 answer:
sweet [91]2 years ago
5 0

Answer:

7 meters per second was her speed

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What is the mass of one gram of calcium?
Anvisha [2.4K]

pls follow me

Explanation:

The mass of one atom of calcium is the same as the molar mass of the calcium. Also, the atomic mass of calcium is 40.078 g/mol.

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2 years ago
Air pollution that forms from the interaction between chemicals in the air and sunlight
Bas_tet [7]

Answer:

This process is called Photochemical smog

Explanation:

4 0
3 years ago
Please help, please don’t answer links
lakkis [162]

Answer:

0.093 mole of C₆H₁₂.

Explanation:

We'll begin by calculating the molar mass of C₆H₁₂. This can be obtained as follow:

Molar mass of C₆H₁₂ = (12×6) + (12×1)

= 72 + 12

= 84 g/mol

Finally, we shall determine the number of mole in 7.8 g of C₆H₁₂. This can be obtained as follow:

Molar mass of C₆H₁₂ = 84 g/mol

Mass of C₆H₁₂ = 7.8 g

Mole of C₆H₁₂ =?

Mole = mass / molar mass

Mole of C₆H₁₂ = 7.8 / 84

Mole of C₆H₁₂ = 0.093 mole

Thus, 7.8 g contains 0.093 mole of C₆H₁₂.

3 0
3 years ago
there are two parts of photosynthesis- the light reactions and the dark reactions. what is the end product of the dark reactions
SpyIntel [72]
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7 0
3 years ago
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Use the van der Waals equation and the ideal gas equation to calculate the pressure for 1.50 mol He gas in a 1.00 L container at
Tamiku [17]

The difference in pressure is <u>8.98 %.</u>

What is pressure ?

In the physical sciences, pressure is defined as the stress at a point within a confined fluid or the perpendicular force per unit area. A 42-pound box with a bottom area of 84 square inches will impose pressure on a surface equal to the force divided by the area it is applied to, or half a pound per square inch. Atmospheric pressure, which is roughly 15 pounds per square inch at sea level, is the weight of the atmosphere pressing down on each unit area of the Earth's surface. Pascals are used to express pressure in SI units; one pascal is equivalent to one newton per square meter. Almost 100,000 pascals of atmospheric pressure are present.

Learn more about the pressure with the help of the given link:

brainly.com/question/23603188

#SPJ4

3 0
1 year ago
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