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]
3 years ago
13

A measurement of 5.685 × 10-6 is equivalent to 0.000 000 568 5. True False

Chemistry
1 answer:
Alecsey [184]3 years ago
7 0
The answer is false.
You might be interested in
If you have exactly 2.00 moles each, of two different substances, then which of the following must be true about the two samples
Gwar [14]
The true is that both substances will have 2 * 6.02* 10^23 = 12.04 * 10^23 particles (may be molucules or atoms(.

Also, the two moles of each substance will have different masses, because you have to multiply the number of moles of each substance by the respective molar mass (or atomic mass).


4 0
3 years ago
H2(g) + Br2(l) ⇄ 2HBr(g) Kc = 4.8 × 108
elena-14-01-66 [18.8K]

Answer:

  • 1.5 × 10⁻⁹M

Explanation:

<u>1. Equilibrium equation</u>

  • H₂(g) + Br₂(l) ⇄ 2HBr(g)

<u>2. Equilibrium constant</u>

The liquid substances do not appear in the expression of the equilibrium constant.

    k_c=\dfrac{[HBr(g)]^2}{[H_2]}=4.8\times 10^8M

<u>3. ICE table.</u>

Write the initial, change, equilibrium table:

Molar concentrations:

         H₂(g) + Br₂(l) ⇄ 2HBr(g)

I          0.400                   0

C           - x                      +2x

E         0.400 - x              2x

<u>4. Substitute into the expression of the equilibrium constant</u>

     4.8\times 10^8=\dfrac{(2x)^2}{0.400-x}

<u>5. Solve the quadratic equation</u>

  • 192,000,000 - 480,000,000x = 4x²
  • x² + 120,000,000x - 48,000,000 = 0

Use the quadratic formula:

       

x=\dfrac{-120,000,00\pm\sqrt{(120,000,000)^2-4(1)(-48,000,000}}{2(1)}

The only valid solution is x = 0.39999999851M

Thus, the final concentration of H₂(g) is 0.400 - 0.39999999851 ≈ 0.00000000149 ≈ 1.5 × 10⁻⁹M

8 0
3 years ago
True or false: Sometimes older rocks end up on top of younger rocks.
olchik [2.2K]

Answer:

true

downstream to the riverbed. However, the most common mechanism to produce older rocks on top of younger is by thrust faulting. Thrust faults form where rocks are being compressed, usually by plate tectonic mechanisms. Thrust faults rip up older strata and pile it on top of younger rocks.

Explanation:

5 0
3 years ago
Read 2 more answers
Write balanced nuclear equations for the following:(a) β⁻ decay of silicon-32
S_A_V [24]

The balanced nuclear equations for the following:(a) β⁻ decay of silicon-32 is (27,14)Si -> (0,-1)beta + (27,15)P

<h3>What is balanced nuclear equation?</h3>

A nuclear reaction is generally expressed by a nuclear equation, which has the general form, where T is the target nucleus, B is the bombarding particle, R is the residual product nucleus, and E is the ejected particle, and Ai and Zi (where I = 1, 2, 3, 4) are the mass number and atomic number, respectively. Finding a well balanced equation is critical for understanding nuclear reactions. Balanced nuclear equations provide excellent information about the energy released in nuclear reactions. Balancing the nuclear equation requires equating the total atomic number as well as the total mass number before and after the reaction using the rules of atomic number and mass number conservation in a nuclear reaction.

To learn more about nuclear equations visit:

brainly.com/question/12221598

#SPJ4

7 0
1 year ago
What is the correct order of coefficients to balance this equation?
11Alexandr11 [23.1K]

Answer:

2Al + 3CuSO4 → Al2(SO4)3 + 3Cu

Explanation:

I THINK

8 0
2 years ago
Other questions:
  • An atom has 33 protons, 41 neutrons, and 36 electrons. What is a correct description of the atom?
    14·2 answers
  • If you have 100 grams of a radioactive isotope with a half life of 10 years how much of the isotope will you have left after 20
    10·1 answer
  • Test (Speed, Velocity and Acceleration)
    14·1 answer
  • Would u die eating a full spoon of salt whe you are dehydrated?
    12·2 answers
  • When the medium is unifrom, how do light waves travel though it?​
    7·1 answer
  • This is due today so please help me
    8·2 answers
  • Which of the following is an example of a force that acts at a distance?
    15·2 answers
  • How many atoms are there in 4500 grams of sulfur(s)?plaease help
    8·1 answer
  • What is the specific heat capacity of silver metal if 110.00 g of the metal
    5·1 answer
  • 1. ¿Qué entendemos por la<br>alquimia y los iatroquimica<br>(Paracelso)?​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!