Chemistry
Chemistry, 15.05.2021 07:20, unruhlsY25

N unknown mass of each substance, initially at 25.0 ∘C∘C, absorbs 1940 JJ of heat. The final temperature is recorded. Find the mass of each substance. a. Pyrex glass (Final temp= 55.6 ∘C)

Express your answer using two significant figures.

b. sand (Final temp= 62.3 ∘C)

Express your answer using two significant figures.

answer
Answers: 3

Other questions on the subject: Chemistry

image
Chemistry, 22.06.2019 23:00, bckyanne3
What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures
Answers: 1
image
Chemistry, 22.06.2019 23:00, EMQPWE
What is the mass of naoh that would have to be added to 500 ml of a solution of 0.20 m acetic acid in order to achieve a ph of 5.0?
Answers: 1
image
Chemistry, 22.06.2019 23:30, sanociahnoel
The density of the solid phase of a substance is 0.90 g/cm3 and the density of the liquid phase is 1.0 g/cm3. a large increase in pressure will a. lower the freezing point b. raise the freezing point c. lower the boiling point d. raise the triple point e. lower the triple point
Answers: 1
image
Chemistry, 23.06.2019 11:20, bobthebattlebot
The chemical composition of soil varies with depth. an article in communications in soil science and plant analysis describes chemical analyses of soil taken from a farm in western australia. fifty specimens were each taken at depths 50 and 250 cm. at a depth of 50 cm, the average no3 concentration (in mg/l) was 88.5 with a standard deviation of 49.4. at a depth of 250 cm, the average concentration was 110.6 with a standard deviation of 51.5. find a 95% confidence interval for the difference in no3 concentrations at the two depths.
Answers: 1
Do you know the correct answer?
N unknown mass of each substance, initially at 25.0 ∘C∘C, absorbs 1940 JJ of heat. The final tempera...

Questions in other subjects: