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
Gelneren [198K]
2 years ago
6

An Expert, please answer this question!

Chemistry
2 answers:
IRINA_888 [86]2 years ago
8 0

Answer:

C

Explanation:

Rudiy272 years ago
3 0

Answer:

C) The student and desk have to be in contact to apply the force.

Explanation:

I am pretty sure :)

You might be interested in
(1.000) How many moles can be found in 83.80 grams of krypton?
marin [14]

Answer: 1 mole Kr

Explanation: solution

83.80g Kr x 1mole Kr / 84 g Kr

= 0.997 or approximately 1 mole Kr

6 0
3 years ago
Convert the concentration of SO2 from 80 μg/m3 to units of parts per million. The gas has a temperature of 25˚C and a pressure o
Ivahew [28]

Answer:

0.031 parts per million

Explanation:

80 micrograms/m^3 = 80 micrograms/m^3 × 1m^3/1000L = 0.08 micrograms/L

Concentration in parts per million = concentration in micrograms/L × molar volume/MW

Concentration in micrograms/L = 0.08

Molar volume at 25°C and 101.325kPa (1 atm) is 24.45L

MW of SO2 = 64g/mole

Concentration in ppm = 0.08×24.45/64 = 0.031 ppm

4 0
4 years ago
Read 2 more answers
When hydrogen gas reacts with oxygen gas to make water, why is oxygen reduced?
IRINA_888 [86]

Hamburger

Explanation: I ate a hamburger yesterday and methane came out my butt

5 0
3 years ago
Read 2 more answers
Write the reaction for the weak base co32- in water
Gekata [30.6K]

The weak base carbonate reacts with the water forming bicarbonate and the hydroxide ion.

<h3>What is a weak base?</h3>

The weak bases are given as the compounds that have the inability to get completely dissociated in water.

The carbonate is given as the weak base, as in water it remains constituted in the form of a bond with oxygen.

The reaction of water with the carbonate ion is given as:

\rm CO_3^{2-}\;+\;H_2O\;\rightleftharpoons HCO_3^-\;+\;OH^-

Learn more about base, here:

brainly.com/question/23687757

#SPJ4

3 0
2 years ago
What was life like in the United States during the 1930s?
liberstina [14]

The 1930s saw natural disasters as well as manmade ones: For most of the decade, people in the Plains states suffered through the worst drought in American history, as well as hundreds of severe dust storms, or "black blizzards," that carried away the soil and made it all but impossible to plant crops.

3 0
3 years ago
Other questions:
  • Phenylacetic acid, HC8H7O2 is one of the substances that accumulates in the blood of persons with phenylketonuria, an inherited
    7·1 answer
  • When the heat source is removed from a liquid, convection currents in the fluid will
    10·1 answer
  • Meera is an eleven-year-old student in India. She knows that her country is a part
    13·1 answer
  • If an enclosure of 0.432 L has a partial pressure of O2 of 3.4×10−6 torr at 28 ∘C, what mass of magnesium will react according t
    8·1 answer
  • Hydrogen is in Group 1A of the periodic table, known as the alkali metals, although it obviously isn't a metal. What is the reas
    6·2 answers
  • Which of these substances is an example of a solution?
    10·2 answers
  • Calculate the volume of nitrogen gas produce by heating g of ammonia at 21c and 823 torr pressure​
    5·1 answer
  • How do magnetic stripes show the history of Earth's magnetic field?
    11·2 answers
  • Which of these has an oxidation number of zero (0)? Cal2, Ca CaS, Ca3N2​
    12·1 answer
  • how many ml of 6.00 m hcl solution is needed to make 25.0 ml of 3.00 m hcl solution? answer in ml with correct significant figur
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!