Answer:
Weight is mass times gravity
Explanation:
The mass is the weight gravity is the force of attraction and weight is the power pulled by the gravity or smthn like that
Answer: (i) blue colour fades away
(ii) Single replacement
(iii) copper sulphate + iron
iron sulphate + copper
Explanation:
Single replacement reaction is a chemical reaction in which more reactive element displaces the less reactive element from its salt solution.
Here iron being more reactive than copper can easily displace copper from its salt solution and form iron sulphate and copper in elemental form.
The blue colour of the copper sulphate solution fades away.
The word equation is :
copper sulphate + iron
iron sulphate + copper
Answer:
P₂ = 0.87 atm
Explanation:
Given data:
Initial pressure = 1.10 atm
Initial volume = 19.2 L
Final volume = 24.3 L
Final pressure = ?
Solution:
The given problem will be solved through the Boyle's law,
"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"
Mathematical expression:
P₁V₁ = P₂V₂
P₁ = Initial pressure
V₁ = initial volume
P₂ = final pressure
V₂ = final volume
Now we will put the values in formula,
P₁V₁ = P₂V₂
1.10 atm × 19.2 L = P₂ × 24.3 L
P₂ = 21.12 atm. L/ 24.3 L
P₂ = 0.87 atm
ANSWER:
c- it is used for directly comparing the amount of substance
Answer:
A
Explanation:
A option is correct .
you cannot create energy neither you can destroy it but you can only convert into other form