Use the following information to answer
questions 16–18.
A substance is a solid at 15°C. A st...
Use the following information to answer
questions 16–18.
A substance is a solid at 15°C. A student
heated a sample of the solid substance and
recorded the temperature at one-minute
intervals in the data table below.
0
1
2.
3
4
5
6
Time (min)
Temp (°C)
15
32
46
53
53
53
53
7
8
9
10
11
12
13
Time (min)
Temp (°C)
53
53
53
53
60
65
70
16. Based on the data table, what is the
melting point of this substance?
17. What is the evidence that the average
kinetic energy of the particles of this
substance is increasing during the first
three minutes?
18. The heat of fusion for this substance is
122 joules per gram. How many joules
of heat are needed to melt 7.50 grams of
this substance at its melting point?
Answers: 3
Other questions on the subject: Chemistry
Chemistry, 21.06.2019 15:00, amanda2003teddy
Litmus paper is made from water-soluble dyes which are extracted from lichens. this paper is used as an acid-base indicator. which of these common household substances would turn blue litmus paper red? a) bleach b) lye c) soap d) vinegar
Answers: 3
Chemistry, 22.06.2019 12:50, khorasanpublic
The number at the end of an isotope’s name is the number.
Answers: 1
Chemistry, 22.06.2019 14:30, davidrodriguez122001
Which of the following describes a situation where competition between producers exists
Answers: 1
Chemistry, 22.06.2019 15:30, lizzyhearts
Count the number of each type of atom in the equation below, and then balance the equation. write in the numbers of atoms and coefficients. add a 1 if there should be no coefficient. cs2(l) + o2(g) → co2(g) + so2(g) c [ ] s [ ] o > c [ ] s [ ] o [ ] cs2(l) + [ ] o2(g) > [ ] co2(g) + [ ] so2(g)
Answers: 3
Do you know the correct answer?
Questions in other subjects:
Biology, 02.08.2019 23:00
Social Studies, 02.08.2019 23:00
Biology, 02.08.2019 23:00
Social Studies, 02.08.2019 23:00
