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
Black_prince [1.1K]
3 years ago
8

Select the two statements that are TRUE about compounds

Chemistry
1 answer:
patriot [66]3 years ago
4 0

a) a compound always contains at least 2 elements

is the answer

You might be interested in
If 9 moles of P203 are formed, how many<br> moles of O2 reacted?
masha68 [24]
9 x 3 = 27
27 moles of O reacted
27 / 2 = 13.5 O2 reacted
round up to 14 moles of O2
3 0
2 years ago
A gas has a volume of 590 mL at temperature of -55.0 C. What volume will the gas occupy at 30.0 C show your work
DENIUS [597]
Data:
V_{initial} = 590\:mL
T_{initial} = -55.0^0C
converting to Kelvin
TK = TC + 273
TK = -55.0 + 273 → TK = 218.0 → T_{initial} = 218.0\:K
V_{final} = ? (in\:milliliters)
T_{final} = 30.0^0C
TK = TC + 273
TK = 30.0 + 273 → TK = 303.0 → T_{final} = 303.0\:K

By the first Law of Charles and Gay-Lussac, we have: 
\frac{ V_{i} }{ T_{i} } = \frac{ V_{f} }{ T_{f} }

Solving:
\frac{ V_{i} }{ T_{i} } = \frac{ V_{f} }{ T_{f} }
\frac{ 590 }{ 218.0 } = \frac{ V_{f} }{ 303.0 }
Product of extremes equals product of means:
218.0* V_{f} = 590*303.0
218.0 V_{f} = 178770
V_{f} = \frac{178770}{218.0}
\boxed{\boxed{V_{f} \approx 820.04\:mL}}\end{array}}\qquad\quad\checkmark
7 0
3 years ago
What is ancient japan remembered for
Katarina [22]
Hi!

The Samurai is what I would attribute to the memory of Ancient<span> Japan.</span>
3 0
3 years ago
I WILL GIVE BRAINLEST ANSWER THOSE THREE QUESTIONS PLZZZZ HELP ME
miskamm [114]
For changing potential energy; When you drop a book, gravitational potential energy is transformed into kinetic energy. Your car transforms the chemical potential energy stored in gasoline into the kinetic energy of the car's motion.

For Kinetic Energy; kinetic energy can be converted into electrical energy by a generator or into thermal energy by the brakes on a car.
3 0
3 years ago
Photosynthesis in a plant is an example of which characteristic of living things?
lutik1710 [3]

Answer:

<h2><em><u>4. Ability to obtain and use energy</u></em></h2>
4 0
3 years ago
Other questions:
  • PLEASE HELP ME ILL GIVE YOU A LOT OF POINTS
    9·1 answer
  • Is the reaction between methane and oxygen endothermic or exothermic? Explain why we burn fossil fuels, such as natural gas.
    7·1 answer
  • The Ethical, Legislative, Social Initiative is the agency responsible for _____.
    14·2 answers
  • What do you think the volume of a perscription bottle would be?<br> plz help me
    11·1 answer
  • Which of the following statements correctly describes boyle's law
    10·1 answer
  • Two boxes are filled with air. The molecules that make up the air in Box A
    7·1 answer
  • What compound is missing?<br> 3Na2SO4 + 2AlCl3 →+ _____ + 6NaCl
    12·1 answer
  • How do jet streams affect temperature and precipitation?
    12·1 answer
  • 1. What is the density, in g/cm², of a substance weighing 22.2 cg with dimensions of 0.333
    10·1 answer
  • Which part of the water cycle happens to most water after surface runoff?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!