The modern atomic model is sometimes called the electron cloud
, or quantum mechanics model.
So the answer is electron cloud
Explanation:
if 6 grams of copper is used then the product will be increased as well
as the amount of reactant is proportional to amount of product.
we know,
mass number of copper is 63 and the product we found is 158.
now if we have a mathematical explanation...
for (63X2) gm Cu we get 158 gm product
"' 1 gm 158/126 """
""" 4 gm 158X4/126
=5.01 gm
again for 6gm using
for 126 gm we get 158 gm product
""" 1gm 158/126 gm ""
""" 6 gm " ' 158X6/126 gm
=7.52 gm product
SO we can say by comparative study that the product has increased
I THINK THATS THE ANSWER
thank u
Answer:
0.02564 kg ore contain 10.0 g of nickel.
Explanation:
Given data:
Percentage of nickel in ore = 39.0%
Mass of ore required to have 10 g of nickel = ?
Solution:
39.0% means that 39.0 g of nickel is present in 100 g of ore thus,
39/100 = 0.39
0.39 × X = 10.0 g
X = 10.0 g/0.39
X = 25.64 g
Gram to kilogram:
25.64 g × 1kg /1000 g
0.02564 kg
The a answer to the statement is between B and D
The correct answer is letter D