All categories

4 years ago

What is inetia and why is it importent

1 answer:

5 0

It's momentum and it's important to understand bc it explains why things do not stop moving after the energy that is being used to make that movement has stopped

You might be interested in

The element with atomic number 35 belongs to

dedylja [7]

Bromine is a chemical element with the symbol Br and atomic number 35.

7 0

3 years ago

Read 2 more answers

A sample of 2.45g aluminum oxide decomposes into 1.3g of aluminum and 1.15g of oxygen. What is the percentage composition of the

Vitek1552 [10]

Answer:

% $Al = 53.1%$ %

% $O = 46.9$ %

Explanation:

If we know the grams of a chemical compound in a specific reaction, it is possible to know the percentage of each atom that composes it.

For the Aluminum Oxide in this problem, we know its total weight and the grams of each component.

therefore we can determine the percentage ratio of its components through:

For Al

% $Al = \frac{mass of Al}{mass of Aluminium oxide} . 100$ %

% $Al = \frac{1,3 g}{2,45 g} . 100$ %

% $Al = 53.1%$ %

In the same way for oxygen

% $O = \frac{mass of O}{mass of Aluminium oxide} . 100$ %

% $O = \frac{1,5 g}{2,45 g} . 100$ %

% $O = 46.9$ %

5 0

3 years ago

How do you make these equations balanced?

Sedaia [141]

Explanation:

both iron and sulphur in FeS2 undergo a change in oxidation state.

O2° -->2O degree2- Total decrease = 2×2=4

So, 4FeS2+11O2 --> 2Fe2O3+8 SO2

Hence, balanced

3 0

3 years ago

Create a timeline to show how atomic structure was developed over the centuries?

tiny-mole [99]

Answer A`bousi

Explanation:

8 0

3 years ago

What mass of chromium (cr) is contained in 35.8 g of (nh4)2cr2o7 ?

fiasKO [112]

M{(NH₄)₂Cr₂O₇}=2A(N)+8A(H)+2A(Cr)+7A(O)

M{(NH₄)₂Cr₂O₇}=252.065 g/mol

M(Cr)=51.996 g/mol

m{(NH₄)₂Cr₂O₇}/M{(NH₄)₂Cr₂O₇}=m(Cr)/2M(Cr)

m(Cr)=2M(Cr)m{(NH₄)₂Cr₂O₇}/M{(NH₄)₂Cr₂O₇}

m(Cr)=2*51.996*35.8/252.065=14.770 g

m(Cr)=14.770 g

7 0

4 years ago