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Varvara68 [4.7K]
3 years ago
12

Is this any better??

Chemistry
1 answer:
Anna11 [10]3 years ago
3 0
I believe there is an error or incorrect word for the first question, but all you have to do to solve for these questions is to make use of the formula

D = m/v, solve for the correct variable by doing the opposite operation.

Divide - multiply

Vice versa.

Then solve for the asked variable.

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Balance equation: _NO + _H2O = _NH3 + _O2
Novosadov [1.4K]

Answer:

4NO + 6H2O = 4NH3 + 5O2

Explanation:

Think about it this way: there are 4N's 4O's and 12H's and 10O's on both sides that's what makes it balanced

Hope this helps :)

7 0
4 years ago
which has more kinetic energy, a 5-kg object moving at 5 m/s 1 m off the ground or a 5-kg object at rest 2 m off the ground?
irina1246 [14]

Answer:

Explanation:

Kinetic energy is the energy due to changes in position of a body. It is always with regards to motion of a body.

Potential energy on the other hand is the energy at rest of a body.

To estimate kinetic energy, we use the formula:

      K.E =  \frac{1}{2}m v^{2}

where m is the mass of the body and v is the velocity of the object.

mass is 5kg and velocity is 5ms⁻¹

      K.E =  \frac{1}{2}5 x  5^{2}

      K.E = 62.5J

for the object at rest;

    potential energy is calculated:

    P.E = mgh

where m is the mass, g is the acceleration due to gravity and h is the height

m is 5kg, h is 2 and g is 9.8

    P.E = 5 x 9.8 x 2 = 98J

The moving object has kinetic energy with the object  at rest having potential energy.

4 0
3 years ago
What is the most important part of driving
Romashka-Z-Leto [24]
I think learn to drive is the most important part
4 0
4 years ago
Read 2 more answers
Are the phosphate groups on the interior or the exterior of the DNA molecule?
Makovka662 [10]

the double helix is hydrogen bonded through the bases only so the bases are inside the helix only

as adenine combines with thymine and guanine with cytosine

phosphate are in the exterior of it

sugar groups constitute the double helix.

3 0
3 years ago
There are two beakers that contain the same liquid substance at the same temperature. The larger beaker is 1,000ml and the small
azamat

Answer:

Answer choice B

Explanation:

Since you do not know the volume of the liquid in each beaker, the one in the smaller beaker could have more substance and therefore more thermal energy. If they had the same amount of substance, then the more voluminous one would radiate faster. However, since you do not know this, there is no way to tell. PM me if you have more questions. Hope this helps!

6 0
3 years ago
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