Answer:
1.03M
Explanation:
mass/molar mass = moles of solution
50 g / (80+1) = 0.617 mol HBr
molarity*volume = moles
M*0.600 L = 0.617 mol
M = 0.617/0.600 = 1.03 M
Answer:
C
Explanation:
Melting point, temperature at which the solid and liquid forms of a pure substance can exist in equilibrium. As heat is applied to a solid, its temperature will increase until the melting point is reached. More heat then will convert the solid into a liquid with no temperature change.
Answer:
We have to consume starch and cellulose in large amount in order to increase the consumption of polysaccharides which make our body healthier.
Explanation:
Starch is polysaccharide which is made up of many glucose molecules. it is mostly made in the body of plants and when we eat that plant this starch is transferred to our body and our body use it when it is needed while cellulose also made of hundred of glucose molecules but our body is unable to digest it because our body is unable to break the bonds between the monosaccharide of cellulose. It is good for humans due to the presence of high amount of fibers.
Answer:
84.75°C is the boiling point of water at an elevation of 7000 meter.
Explanation:
Rate of change of pressure = 19.8 mmHg/1000 ft
1 foot = 
meter
Pressure change for every 1 m = 0.065 mmHg × 1= 0.065 mmHg
Elevation Pressure
0 m 760 mmHg
1000 m 695 mmHg
2000 m 630 mmHg
Pressure drop at the elevation of 7000 m: 
Pressure at 7000 m = 760 mmHg - 455mmHg = 305 mmHg
The boiling point of water decreases 0.05°C for every 1 mmHg drop in atmospheric pressure.
At 7000 meter elevation the boiling of water will be :
Boiling point of water at 7000 meter elevation :
84.75°C is the boiling point of water at an elevation of 7000 meter.
