1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Marat540 [252]
3 years ago
13

What are the answers to these?

Chemistry
1 answer:
Eva8 [605]3 years ago
7 0

Answer:

1)physical change

Explanation:

2)chemical change

You might be interested in
Water can only dissolve inorganic compounds
mote1985 [20]
Water can only dissolve inorganic compounds is false 


4 0
3 years ago
What periodic trends exist for electronegativity?
Anna007 [38]
The highest electronegativity is in the elements in the top left corner of the periodic table, and the lowest in the bottom right corner. Therefore, traveling up or to the left across the periodic table will increase the electronegativity 
5 0
3 years ago
Calculate the energy required to heat 406.0mg of cyclohexane from 33.5°C to 38.9°C . Assume the specific heat capacity of cycloh
N76 [4]

Answer:

Q = 4.056 J

Explanation:

  • Q = m<em>C</em>ΔT

∴ m = 406.0 mg = 0.406 g

∴ <em>C </em>= 1.85 J/g.K

∴ T1 = 33.5°C ≅ 306.5 K

∴ T2 = 38.9°C = 311.9 K

⇒ ΔT = 311.9 - 306.5 = 5.4 K

⇒ Q = (0.406 g)(1.85 J/gK)(5.4 K)

⇒ Q = 4.056 J

6 0
3 years ago
If a 60 kg dog is on a 15 kg sled is pushed with a force of 300 N, what will be dogs acceleration? A) 900 N B) 4 kg C) 4 m/s2 D)
stepan [7]
The answer is C because you have to find acceleration.
6 0
3 years ago
Read 2 more answers
A. How many protons, electrons, and neutrons make up an atom
mestny [16]

Answer:

45 neutrons

Explanation:

Bromine has 35 protons and a mass number of 80. a) How many neutrons does the atom of bromine have? The mass number = protons + neutrons. Bromine has a mass number of 80 and 35 protons so 80-35 = 45 neutrons.

5 0
2 years ago
Other questions:
  • Definition: The possible state for an electron of an atom that is proportional to its distance to the nucleus.
    5·1 answer
  • What is the main difference in covalent bonds in diatomic chlorine and diatomic oxygen? diatomic means two atoms of the same typ
    9·1 answer
  • How can you know if evolution has occured within species?​
    10·1 answer
  • 6.3 kJ of energy is required to increase the temperature of some water from 60 °C to 75 °C. The specific heat capacity of water
    14·1 answer
  • All of the following statements concerning voltaic cells are true EXCEPT
    9·1 answer
  • An organelle that is not found in this illustration of a cell would be
    14·2 answers
  • What is the molar mass of carbon (C)?
    12·2 answers
  • SEP Construct an Explanation What properties of lithium, sodium, and magnesium make these elements good ones to use in the anode
    7·1 answer
  • Write any two effect of gravity​
    8·1 answer
  • A sample of rock contains 80 grams of a parent radioactive isotope that has a half-life of 20 000 years. After 100 000 years, th
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!