All categories

3 years ago

Why does a raindrop accelerate as it falls to the earth?

Chemistry

2 answers:

Scilla [17]3 years ago

7 0

Answer:

because of gravity

Explanation:

allochka39001 [22]3 years ago

6 0

Acceleration is the rate at which an object changes its speed. When a raindrop is falling down from the clouds due to gravity, the veloicty is pretty much fast, however air resistance comes in action and slows the droplet down... it gives it a constant speed until it hits the ground

You might be interested in

What is the characteristics of tropical air mass

RideAnS [48]

Answer:

Explanation:

Continental tropical air masses are extremely hot and dry. Arctic, Antarctic, and polar air masses are cold. The qualities of arctic air are developed over ice and snow-covered ground. Arctic air is deeply cold, colder than polar air masses.

5 0

3 years ago

What are the oxidation numbers for HCL

prisoha [69]

Here's the numbers
H = +1
Cl = -1

5 0

3 years ago

What is the volume of 7.50x10^24 molecules of NH3 at STP

Bas_tet [7]

Answer:

V NH3 = 304.334 L

Explanation:

1 mol ≡ 6.02 E23 molecules

⇒ moles NH3 = (7.50 E24 molecules)×(mol/6.022 E23 molecules)

⇒ mole NH3 = 12.454 mol

assuming ideal gas:

PV = RTn

STP:

∴ T = 25°C ≅ 298 K

∴ P = 1 atm

⇒ V NH3 = RTn/P

⇒ V NH3 = ((0.082 atm.L/K.mol)×(298 K)×(12.454 mol))/(1 atm)

⇒ V NH3 = 304.334 L

4 0

4 years ago

Substance which allows energy to pass through it

Airida [17]

A substance which allows energy (heat or electricity) to pass through it is known as a conductor.

These substances usually have free electrons which allows the charges to flow easily in the substance, thus, transferring energy.

Other substances which do not have free electrons and do not allow energy to pass through them are known as insulators.

3 0

3 years ago

A solution is made by dissolving 100. g of cobalt(III)chloride in 250. g of water. to make a solution that has a density of 1.25

Mariulka [41]

Answer:

Option A) (I) 2.42 m (II) 2.16 M

Explanation:

Let's determine some information.

Solute = CoCl₃ (molar mass = 165.29 g/m); mass of 100 g

Solvent = Water, mass of 250 g

Solution mass = mass of CoCl₃ + mass of water

250 g + 100 g = 350 g of solution

If we want to reach molarity (mol/L), let's determine solution volume with density:

Solution density = solution mass / solution volume

1.25 g/mL = 350 g / solution volume

Solution volume = 350 g / 1.25 g/mL = 280 mL

Let's convert the volume to L → 280 mL = 0.280L

Let's convert the mass of solute to moles = 100 g / 165.29 g/m →0.605 mol

Mol/L = 0.605 moles / 0.280 L = 2.16 M

Now let's calculate molalilty (mol/kg of solvet)

We must convert solvent mass to kg → 250g = 0.250 kg

Then, 0.605 moles / 0.250 kg =2.42 m

8 0

4 years ago