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
Elza [17]
3 years ago
7

What is the correct answer in scientifie notation?9.84.3x104.6x10Select one:O a. 198 e 15.8O b. 198 e 16.8O C. 198 e 1.80d. 1980

e 15.8

Chemistry
1 answer:
Nata [24]3 years ago
6 0
To answer this problem, we multiply first the given figures above, 4.3x10^9.8  and 4.6 x10^7. the answer or the product of these figures is 19.8 x10^16.8. We add both exponents to get 16.8 and multiply both coefficents to get 19.8. The answer to this problem is A. 198x10^15.8
You might be interested in
What is the molar mass of 12?
andrew-mc [135]

Answer:

I assume your talking about carbon when you say 12 so it'd be 12 grams if you are

Explanation:

The molar mass of any substance in grams per mole is numerically equal to the mass of that substance expressed in atomic mass units.

Hope this helps you some

3 0
3 years ago
Study the reaction. NO(g) ⇌ 12N2(g) + 12O2(g) ΔH = −90.3 kJ Which statement about the reaction is correct? A) The reverse reacti
lozanna [386]

Answer:

The forward reaction is an exothermic reaction.

Explanation:

An exothermic reaction is one in which energy is released, usually in the form of heat hence the enthalpy of the reaction is negative. When a reaction exothermic, the energy of the reactants is greater than the energy of the products hence the excess energy is given out as heat. The reactants lie at a higher energy level in the reaction profile compared to the products.

When we look at the reaction given in the question, NO(g) ⇌ 12N2(g) + 12O2(g) ΔH = −90.3 kJ , we can easily see from the thermochemical reaction that the forward reaction is exothermic, energy is released by the reaction system as evidenced by the negative enthalpy of reaction.

4 0
3 years ago
Determine the molar mass of a 0.314-gram sample of gas having a volume of 1.6 l at 287 k and 0.92 atm. show your work.
Olenka [21]

As per Ideal gas equation, molar mass of the gas is 5.032 g/mo

We’ll begin by calculating the number of mole of the gas. This can be obtained as follow:

Volume (V) = 1.6 L

Temperature (T) = 287 K

Pressure (P) = 0.92 atm

Gas constant (R) = 0.0821 atm.L/Kmol

Number of mole (n) =?

According to Ideal gas equation , PV = nRT

0.92 × 1.6 = n × 0.0821 × 287

1.472 = n × 23.5627

Divide by 23.5627

n = 1.176 / 23.5627

n = 0.0624 mole

Finally, we shall determine the molar mass of the gas. This can be obtained as follow:

Mass of gas = 0.314 g

Number of mole = 0.0624 mole

Mole = \frac{mass}{molar mass}

0.0624 = \frac{0.314}{molar mass}

Cross multiply

0.0624 × molar mass of gas = 0.314

Divide by 0.0624

Molar mass of gas =  \frac{0.314}{0.0624}

Molar mass of gas = 5.032 g/mo

Therefore the Molar mass of gas is 5.032 g/mo

Learn more about  Ideal gas equation here:

brainly.com/question/3637553

#SPJ1

8 0
2 years ago
HELP PLZZZZ ASAP im so desperate to get this done my course is due in 2 days and im sick so if you can help plz plz plz do if i
Gemiola [76]

It can be done by you only

  • First observe the figure or model .
  • Then note the observations about its molecular structures .
  • Then write it uses and why it is commercial most usable.

3 0
3 years ago
What Is A Sublimation
kondaur [170]

Answer:

sublimation is the transition of a substance directly from the solid  to the gas phase without passing throught the intermedate liquid phase

such as the following

dry ice

air fresheners

freese drying

moth balls

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • what are the similarities and differences between the gas properties and kinetic molecular theory postulates?
    13·1 answer
  • The ph of a 0.24 m solution of dimethylamine is 12.01. calculate the kb value for dimethylamine.
    11·1 answer
  • When determining slope, data points do not usually fall within a straight line, so you need to draw a _____ line, with as many p
    10·2 answers
  • How is steel made from iron??
    13·1 answer
  • Give the name of each ion.<br> S2- <br><br> N3-
    8·1 answer
  • How many molecules of H2O and O2 is present in 8.5g of H2O?​
    7·1 answer
  • The nuclear symbol for uranium-235 should be written as
    12·1 answer
  • Balance the following equation: N2 + H2 --&gt; NH3
    6·1 answer
  • 7th GRADE SCIENCE PLEASE HELP!! ​
    15·1 answer
  • What is the name of something that starts with N and ends with G
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!