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oksano4ka [1.4K]
3 years ago
13

What causes velocity to change?

Chemistry
1 answer:
Aleonysh [2.5K]3 years ago
6 0

Acceleration. Due to Gravity and how heavy the object is.

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Please help ASAP<br><br> list three intermolecular forces from strongest to weakest
garri49 [273]

Answer: There are three different types of intermolecular forces in terms of strength. They are (strongest to weakest) hydrogen bonding, dipole-dipole and Van der Waals' forces.

Explanation: Mark me brain, give 5 stars and a thank you

7 0
3 years ago
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What mass of al is required to completely react with 25.0 grams of mno2?
horsena [70]
Mass of MnO2 = 25 g 
The reaction would be 3MnO2 + 4Al --> 3Mn(s) + 2Al2O3
 Molar mass of Al = 26.982 g/mol
 Molar mass of MnO2 = 54.938 + 2(15.999) = 86.936 g/mol
 Calculating the moles = 25 / 86.936 = 0.2876 mol.
 Mole ratio MnO2 and Al considering the equation = 3 mol of MnO : 4 mol of Al
 Calculating the moles of Al = 0.2876 mol MnO2 x (4 mol of Al / 3 mol of MnO)
 Number of moles of Al = 0.3834
 Getting the mass in grams as asked = 0.3834 mol x 26.982 g/mol = 10.34 grams.
6 0
3 years ago
Read 2 more answers
Which description of nitrogen-15 is correct?
VashaNatasha [74]
The first one is correct cause first of all it's atomic number is 7 and second of all it's atomic mass is about 15
8 0
3 years ago
HELP!!!!!! DUE IN 1 HOUR
Gnesinka [82]

Answer:

Group 17, 2, 7, 7 electrons

Explanation:

5 0
2 years ago
Which theory describes the motion of and force driving earth’s plates?
swat32

The theory that describes the motion and force driving earth's plates is Plate tectonics

Explanation:

Plate tectonics states that the outer shell of the Earth is divided into plates that glide and move over the mantle which is the surface of the earth.

The mantle is the rocky inner layer above the core of the Earth.

Plate tectonics helped the geologists to explain how continents could move around the planet.

There are 9 major plate tectonics , namely North American, Pacific, Eurasian, Australian, African, Indo - Australian,Indian South American and Antarctic. These plates have been named after the land form found on them.

7 0
3 years ago
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