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
enyata [817]
3 years ago
12

In science, a vacuum is defined as space that contains absolutely no matter (no molecules, no atoms, etc.) Can energy be transfe

rred as heat through a vacuum?
A. True
B. False
Chemistry
1 answer:
In-s [12.5K]3 years ago
7 0
The answer is b I hope so
You might be interested in
What does the cell theory state?
strojnjashka [21]

C, that cells cannot be created nor destroyed.

Cells are produce by other cells. Cells can not be man-made nor destroyed.

6 0
3 years ago
Please help..... who is up for a zoom to help me with balancing equations ​
Alex787 [66]

Answer:

Um I can help but not on zo.om. I can help u on here just post ur question and I will answer it

8 0
3 years ago
Read 2 more answers
Balancing chemical equations
kolbaska11 [484]

Answer:

2B2 + 3O2 → 2B2O3

Explanation:

Balance The Equation: B2 + O2 = B2O3

1. Label Each Compound With a Variable

  aB2 + bO2 = cB2O3

2. Create a System of Equations, One Per Element

  B: 2a + 0b = 2c

  O: 0a + 2b = 3c

3. Solve For All Variables (using substitution, gauss elimination, or a calculator)

  a = 2

  b = 3

  c = 2

4. Substitute Coefficients and Verify Result

  2B2 + 3O2 = 2B2O3

      L R

  B: 4 4 ✔️

  O: 6 6 ✔️

hope this helps!

7 0
2 years ago
"which is a correct description of the organization of subatomic particles in atoms?"
Irina18 [472]
Which is a correct description of the organization of subatomic particles in atoms?

Protons and neutrons are tightly packed into a small nucleus. Electrons occupy the space
outside the nucleus

hope this helps.
5 0
2 years ago
The decomposition of HBr(g) into elemental species is found to have a rate constant of 4.2 ×10−3atm s−1. If 2.00 atm of HBr are
Dennis_Churaev [7]

Answer:

7,94 minutes

Explanation:

If the descomposition of HBr(gr) into elemental species have a rate constant, then this reaction belongs to a zero-order reaction kinetics, where the r<em>eaction rate does not depend on the concentration of the reactants. </em>

For the zero-order reactions, concentration-time equation can be written as follows:

                                          [A] = - Kt + [Ao]

where:

  • [A]: concentration of the reactant A at the <em>t </em>time,
  • [A]o: initial concentration of the reactant A,
  • K: rate constant,
  • t: elapsed time of the reaction

<u>To solve the problem, we just replace our data in the concentration-time equation, and we clear the value of t.</u>

Data:

K = 4.2 ×10−3atm/s,  

[A]o=[HBr]o= 2 atm,  

[A]=[HBr]=0 atm (all HBr(g) is gone)

<em>We clear the incognita :</em>

[A] = - Kt + [Ao]............. Kt =  [Ao] - [A]

                                        t  = ([Ao] - [A])/K

<em>We replace the numerical values:</em>

t = (2 atm - 0 atm)/4.2 ×10−3atm/s = 476,19 s = 7,94 minutes

So, we need 7,94 minutes to achieve complete conversion into elements ([HBr]=0).

6 0
3 years ago
Other questions:
  • Please help me :(
    8·1 answer
  • A cough syrup contains 5.0% ethyl alcohol, c2h5oh, by mass. if the density of the solution is 0.9928 g/ml, determine the molarit
    8·1 answer
  • What is the common name of sodium bicarbonate
    15·1 answer
  • I am not Neon, but I am a noble gas with a mass of less than 30.
    7·2 answers
  • What is the molar mass of BE(SO4) <br> WILL GIVE BRAINLIEST ANSWER
    5·1 answer
  • How many grams are in 7 moles of water H2O molecules
    7·1 answer
  • Give the following for SO2 and BrF5:
    10·1 answer
  • 1. For each of the following formulas:
    6·1 answer
  • In this experiment you’ll be grabbing the relationship between mass and volume you’ll be placing the volume on the X axis and th
    13·1 answer
  • A 55.0 g aluminum block initially at 27.5 ∘c absorbs 725 j of heat. what is the final temperature of the aluminum?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!