subject
Chemistry, 05.06.2020 03:01 cindy978

A 21 g sample of calcium is heated and placed in a calorimeter containing 18 g of water. The temperature of the water eventually increases a total of 4°C. What was the total change in temperature of the calcium sample rounded to the nearest (positive) whole number?

ansver
Answers: 2

Another question on Chemistry

question
Chemistry, 22.06.2019 10:00
Why is carbon ideal for making different compounds?
Answers: 2
question
Chemistry, 22.06.2019 20:00
Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.
Answers: 3
question
Chemistry, 22.06.2019 21:00
What is the chemical formula for the compound formed between sodium and flour one
Answers: 1
question
Chemistry, 22.06.2019 22:30
Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt
Answers: 1
You know the right answer?
A 21 g sample of calcium is heated and placed in a calorimeter containing 18 g of water. The tempera...
Questions
question
Mathematics, 28.01.2020 17:48
Questions on the website: 13722363