Answer:
CrO2
Explanation:
Firstly, we need to find the mass of the oxygen in the oxide. That is 4.94 - 3.06 = 1.88g
Now, we will need to get the number of moles and this can be obtained by dividing the masses by the atomic mass units. The atomic mass units of chromium and oxygen are 52 and 16 respectively. The division is obtained as follows:
Cr = 3.06/52 = 0.06
O = 1.88/16 = 0.12
We then divide by the smallest, which is that of the chromium.
Cr = 0.06/0.06 = 1
O = 0.12/0.06 = 2
The simplest formula is the empirical formula and it is thus given by CrO2
Answer:
<h2>
2Al +
3CuO ==>
3Cu + Al2O3</h2>
Explanation:
So let's break this chemical equation down into 2 parts - Reactants and Products
Reactants = Al + CuO
Products = Cu + Al2O3
So the Chemical Reaction will be
Al + CuO ==> Cu + Al2O3
So the balanced equation will be,
2Al + 3CuO ==> 3Cu + Al2O3
PLS mark as brainliest
Explanation:
- area of rectangle=l×b
2.area of rectangle=l×b
3. perimeter of square=4×L
4. perimeter of rectangle=2(L+b)
- 14=2(4+b)
- 14=8+2b
- 2b=6
- b=3cm
hope it helps.
Answer:
6.273×10²³
Explanation:
hope this is useful friend
