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2 years ago

What must be true of a substance with a lot

Chemistry

2 answers:

LUCKY_DIMON [66]2 years ago

8 0

Answer:

A is the answer.

Explanation:

matrenka [14]2 years ago

4 0

Answer:

It has a lot of matter

plz mark brainliest

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¿Cuál de los siguientes no es un ejemplo de movimiento de masas?

babunello [35]

Which of the following is not an example of a mass movement?

to. a. Ground slides b) acid rain c. mud flow d. drop

Answer:

b) acid rain

Explanation:

Acid rain is not an example or a type of mass movement.

Mass movement or mass wasting is the movement of rocks, soils and other debris downslope under the influence of gravity.

Water, slope and gravity are triggers of mass movement.

Acid rain is a not a form of mass movement
It occurs with some certain gases mixes rain water to produce an acidic precipitation.
When the water falls to the each surface, it causes problems to the ecosystem and can also corrode building materials.

8 0

2 years ago

What charge does nitrogen form when it satisfies the octet rule?

ExtremeBDS [4]

The answer should be B: -3

3 0

2 years ago

Name the following lonic Compounds using the lonic naming rules. Remember, place the metal's name

liq [111]

1.Calcium Chloride
2.Lithium Bromide
3.Beryllium Sulfide
4.Lithium Fluoride
5. Potassium hydroselenide
6. Strontium phosphide
7.Barium Chloride
8.Iron Oxide
9.Iron
10.?
11.Copper Nitride

6 0

2 years ago

Calculate the mass of water vapour present in a room of volume 400 m3 that contains air at 27 °C on a day when the relative humi

Alex73 [517]

Answer:

Mass of water = 6251. 706g or 6.25Kg

Explanation:

Relative humidity = (actual vapor pressure/saturation vapor pressure) * 100%

Actual vapor pressure, Pw = relative humidity * saturation vapor pressure

Pw = 60% * (35.6 *0.001)atm = 0.0216atm

Note: 1mbar = 0.001atm

Using the ideal gas equation: PV=nRT; where P = Pw= 0.02136atm, V= (400

* 1000)dm^3, R= 0.082 atmdm^3/kmol, T= (27+273)K, n = number of moles

Note: 1m^3 = 1000dm^3,R is the molar gas constant.

Making n subject of the formula, n = PV/RT

n= (0.02136 * 400000)/(0.082 * 300) = 347.317 moles

Mass (g) = number of moles (n) * molar mass

molar mass of water=18g

Mass of water = 347.317 * 18 = 6251. 706g or 6.25Kg

6 0

2 years ago

Please help me get the answer to bothe a and b

neonofarm [45]

Answer:

If a metal and metal solution react, the more reactive metal will displace the less reactive metal from solution. If the metal in solution you start with is formed from a more reactive metal than the metal to be added, no reaction will occur.

3 0

1 year ago