英语化学题,非常急Q6.If 33.2mL of 0.153M KOH is required to neutraliz

英语化学题,非常急
Q6.If 33.2mL of 0.153M KOH is required to neutralize completely 26.0mL H2SO4 solution,what is the molarity of the acid?
H2SO4}(aq) + 2KOH(aq) to K2SO4(aq) + 2H2O(l)
Molarity=?
Q7.Rank the following species according to the increasing energy needed to raise the temperature of 10.0g of the substance by 25.0 Celcius.
Rank from most to least energy needed.To rank items as equivalent,overlap them.
From least energy to highest energy
Copper,Aluminum,stainless steel,Cast iron,Water
If you pour equal amounts of scalding hot water into different metallic cups of equal temperature,which cup will heat up the most?Rank the cups from hottest to coldest.
Rank from warmest to coolest final temperature.To rank items as equivalent,overlap them.
500-g stainless steel,500-g aluminum cup,750-g aluminum cup
Q8.A 25-g sample of an alloy at 90Celcius is placed in 50.g water at 18.Celcius.
If the final temperature reached by the alloy sample and water is 27 Celcius,what is the specific heat cal/g Celcius of the alloy?SH=?Cal/g celcius
Q9.Calculate the kilocalories each food provides when burned in a calorimeter.
1.One stalk of celery that produces energy to heat 520g of water from 25.2 Celcius to 36.0 Celcius
2.A waffle that produces energy to heat 4900g of water from 25.0 Celcius to 62.6 Celcius .
1.A volume of 505mL of air on a cold winter day at 5 Celcius is breathed into the lungs,where body temperature is 37 Celcius.
A.The final volume of gas is the same as the initial volume.
B.The final volume of gas is less than the initial volume.
C.The final volume of gas is larger than the initial volume.
2.The heater used to heat 1400L of air in a hot-air balloon is turned off.
A.The final volume of gas is the same as the initial volume.
B.The final volume of gas is less than the initial volume.
C.The final volume of gas is larger than the initial volume.
3.A balloon filled with helium at the amusement park is left in a car on a hot day.
A.The final volume of gas is the same as the initial volume.
B.The final volume of gas is less than the initial volume.
C.The final volume of gas is larger than the initial volume.