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
belka [17]
3 years ago
9

4. Which of the following have mass? Select all that apply.

Chemistry
1 answer:
valkas [14]3 years ago
4 0
All of these EXCEPT helium in a balloon
You might be interested in
A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is it?
nataly862011 [7]

Answer:

Na

Explanation:

8 0
3 years ago
What is the pH of a solution has a hydrogen ion concentration of 6.3 x 10–10 M? Show work
NISA [10]

Answer:

pOH = 4.8

pH = 9.2

Explanation:

Given data:

Hydrogen ion concentration = 6.3×10⁻¹⁰M

pH of solution = ?

pOH of solution = ?

Solution:

Formula:

pH = -log [H⁺]

[H⁺] = Hydrogen ion concentration

We will put the values in formula to calculate the pH.

pH = -log [6.3×10⁻¹⁰]

pH = 9.2

To calculate the pOH:

pH + pOH = 14

We will rearrange this equation.

pOH = 14 - pH

now we will put the values of pH.

pOH = 14 - 9.2

pOH = 4.8

7 0
3 years ago
Which material is likely to slow the flow of electric charges the most? Explain
vesna_86 [32]

Answer:

The material that would most likely slow the flow of electricity is plastic.

Explanation:

Plastic is a conductor. A conductor is something that stop or slows down the flow of electricity.

4 0
3 years ago
Can u help me with this
dolphi86 [110]

Answer:

c

Explanation:

the reason is because your a homosiejenenddj

8 0
3 years ago
What is the energy change associated with 1.5 mole of D being formed? 
AleksandrR [38]

Answer:

–36 KJ.

Explanation:

The equation for the reaction is given below:

2B + C —› D + E. ΔH = – 24 KJ

From the equation above,

1 mole of D required – 24 KJ of energy.

Now, we shall determine the energy change associated with 1.5 moles of D.

This can be obtained as illustrated below:

From the equation above,

1 mole of D required – 24 KJ of energy

Therefore,

1.5 moles of D will require = 1.5 × – 24 = –36 KJ.

Therefore, –36 KJ of energy is associated with 1.5 moles of D.

3 0
3 years ago
Other questions:
  • During a combustion reaction, 9.00 grams of oxygen reacted with 3.00 grams of CH4.
    5·1 answer
  • What is the percent by mass of Fluorine in Nitrogen triflouride NF3?
    9·1 answer
  • Which of the following types of energy equals the total energy of motion and position
    9·1 answer
  • Write the correct ionic compound formula
    5·1 answer
  • A flashbulb of volume 2.70 mL contains O2(g) at a pressure of 2.30 atm and a temperature of 30.0 °C. How many grams of O2(g) doe
    14·1 answer
  • 4. Explain why 50 g of liquid water at 0°C heats-up more quickly than 50 g of an ice water mixture at 0°C under the same conditi
    13·1 answer
  • Which element listed below is considered an alkaline earth metal?
    6·1 answer
  • Suppose you set a glass of water in direct sunlight for 2 hours and measure its temperature every 10 min . What type of graph wo
    9·1 answer
  • Which reproductive structure is correctly paired with its functions
    10·2 answers
  • What is the pH of a solution of RbOH with a concentration of 0.86 M? Answer to 2 decimal places
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!