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
GrogVix [38]
2 years ago
5

Hello there

Chemistry
2 answers:
nydimaria [60]2 years ago
8 0
The answer is question 3! remember, density= mass/volume so density = 80 grams/10 mL
Mumz [18]2 years ago
6 0
The answer is the third one because density is mass divided by volume so 80 divided by 10 is 8
You might be interested in
J.J. Thomson's model of the atom includes all BUT ONE of these features. That is
kakasveta [241]

Answer:

D

Explanation:

usa testprep!!!!!

8 0
3 years ago
A sample of ideal gas is in a sealed container. The pressure of the gas is 505torr, and the temperature is 43 degree celsius. If
Contact [7]
Use PV=nRT to find V assuming n is one and R= 8.31 then use the answer to find P2
8 0
3 years ago
When 1.00 g of boron is burned in o2(g) to form b2o3(s), enough heat is generated to raise the temperature of 733 g of water fro
Bas_tet [7]
<span>Answer: For this problem, you would need to know the specific heat of water, that is, the amount of energy required to raise the temperature of 1 g of water by 1 degree C. The formula is q = c X m X delta T, where q is the specific heat of water, m is the mass and delta T is the change in temperature. If we look up the specific heat of water, we find it is 4.184 J/(g X degree C). The temperature of the water went up 20 degrees. 4.184 x 713 x 20.0 = 59700 J to 3 significant digits, or 59.7 kJ. Now, that is the energy to form B2O3 from 1 gram of boron. If we want kJ/mole, we need to do a little more work. To find the number of moles of Boron contained in 1 gram, we need to know the gram atomic mass of Boron, which is 10.811. Dividing 1 gram of boron by 10.811 gives us .0925 moles of boron. Since it takes 2 moles of boron to make 1 mole B2O3, we would divide the number of moles of boron by two to get the number of moles of B2O3. .0925/2 = .0462 moles...so you would divide the energy in KJ by the number of moles to get KJ/mole. 59.7/.0462 = 1290 KJ/mole.</span>
7 0
3 years ago
What does an arrow in a chemical equation show?
kobusy [5.1K]

Answer:

A chemical equation consists of the chemical formulas of the reactants (on the left) and the products (on the right). The two are separated by an arrow symbol (“→” usually read aloud as “yields”). ... The equation also identifies that all the compounds are in the gaseous state.

Explanation:

6 0
3 years ago
Read 2 more answers
A sample of an unknown liquid has a volume of 24.0 mL and a mass of 6 g. What is its density? Show your work or explain how you
kobusy [5.1K]
The answer would be 0.25 g/mL. 
I determined the density by dividing the mass by the volume which gives you the density. D = mass/volume.
<span>6 g / 24 mL = 0.25 g/mL </span>
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is one reason why rock layers are not horizontal?
    10·2 answers
  • I really need help please help me I have 10 minutes to finish
    5·1 answer
  • Power is measured in which unit?
    13·1 answer
  • Are molecules with identical chemical formulas but different three-dimensional structures
    14·1 answer
  • Rachel wants to test how sunlight impacts plant growth over time. She will add varying amounts of light to different sets of pla
    6·1 answer
  • Which is more prevalent in the food we eat: carbon-12 or carbon-14?
    8·1 answer
  • A reaction produces 0.755 mol of H2O. How many molecules of water are produced?
    6·1 answer
  • Consider the balanced equation below.
    12·2 answers
  • What is the definition of an independent and dependent variable?
    6·1 answer
  • 5.20763 to three significant figures​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!