Chemistry, 26.11.2020 01:00, 29delphina
I WILL GIVE 50 POINTS AND A BRAINIEST IF YOU ANSWER THESE 5 QUESTIONS!!!
PLEASE HELP ME
1. Calculate the amount of heat required for 25.0 grams of water to change from 10 degrees Celsius to 30 degrees Celsius.
2. 50.0 grams of water at 100 degrees Celsius evaporated to water vapor 2 points
at 100 degrees Celsius. Calculate the amount of heat required for this
conversion.
3. A student measured 15.0 grams of ice in a beaker. The beaker was then
placed on a hot plate where it was heated uniformly for a certain amount
of time. During the melting process of the ice, the student noted that the
temperature was at 0 degree Celsius. When all the ice converted to water,
the final temperature was also at 0 degree Celsius. How much heat was
used to melt the ice?
4. If 5.0 grams of water was cooled from 50 degrees Celsius to 40
degrees Celsius, then calculate the amount of heat released by the water.
5. A certain amount of water used exactly 84.0 Joules of heat energy to
change from 25.0 degrees Celsius to 35 degrees Celsius. How many
grams of water was used?
Answers: 1
Chemistry, 21.06.2019 13:30, blakeboy3148
Draw the more stable lewis dot structure for bro2-
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Chemistry, 22.06.2019 07:00, haydjanggg6578
The boiling point of propanoic acid is higher than that of 1-butanol because: propanoic acid has a higher molecular weight than 1-butanol. propanoic acid is more soluble in water than 1-butanol. propanoic acid is a better hydrogen bond donor than 1-butanol. propanoic acid forms hydrogen bonded dimers and 1-butanol does not. 1-butanol forms hydrogen bonded dimers and propanoic acid does not.
Answers: 2
Chemistry, 22.06.2019 09:30, psychocatgirl1
Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone, due to its high light availability and warm water temperature
Answers: 3
Chemistry, 22.06.2019 21:40, fatherbamboo
A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?
Answers: 3
I WILL GIVE 50 POINTS AND A BRAINIEST IF YOU ANSWER THESE 5 QUESTIONS!!!
PLEASE HELP ME
1. Ca...
1. Ca...
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