Answer:
2.48626 x 10^24
Explanation:
We multiple 4.13 by avogadro's number to get that.
There number of calories that are required to raise the temperature of 105 g of water from 30.0 c to 70.0 c is calculated as follows
Q(heat)= mass(m) x specific heat capacity of water ( 1 cal/g/c) x delta T ( change in temperature
delta T = 70.0- 30.0= 40.0 c
Q= 105 g x 1 cal/g/c x 40 c = 4200 calories is needed to raise temperature of water from 30 c to 70 c
A 50.0 ml sample of 0.108 m h2so4 is diluted to 250.0 ml. Its new molarity will be 0.0216 m.
Dilution would be the process of lowering a solute's concentration in a solution. It usually just includes combining the solution with much more solvent, such as water. A solution is diluted when more solvent is added without increasing solute.
Molarity can be calculated by using the formula:
where, M is molarity and V is volume.
Given data:
= 0.108 m
= 50 ml
= 250 ml
Put the value of given data in above equation.
0.108 m × 50 ml = M × 250ml
M = 0.0216 m
Therefore, the new molarity will be 0.0216 m.
To know more about molarity
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Explanation:
Any quantity which can be measured is called a physical quantity.
I would probably say something like: A bare floor feels cold to your feet in the morning because you have been in a warm bed for a long period of time. (hope that sort of helped)