All categories

3 years ago

What’s a force that pulls objects towards each other

Chemistry

2 answers:

sweet [91]3 years ago

8 0

Answer:

Gravity

Explanation:

Its simple Gravity

olchik [2.2K]3 years ago

3 0

Gravitational Pull I’m pretty sure is the answer

You might be interested in

Which of the following is a type of cell organelle?

icang [17]

Answer:

C . Dna

Explanation:

8 0

3 years ago

Which of these is a benefit of fuel cell cars?

Otrada [13]

Answer:

Explanation:

There are no vehicle emissions other than water vapor. This means no pertroleum products and no fossil fuels. :)

-Sienna Sushi

5 0

3 years ago

Read 2 more answers

When light mass nuclei combine to form a heavier more stable nucleus this is called

n200080 [17]

Answer:

Nuclear fusion

Explanation:

Science

4 0

3 years ago

Why are halogens reactive?

erica [24]

Halogens are reactive because:

They have high electronegativity and also high nuclear charge. So, they are reactive and also gain an electron when they react with other elements.

Since they are very reactive, halogens are very harmful to living organisms. Some of the halogens are fluorine, chlorine, bromine, iodine, astatine. These are mostly non metals. Fluorine is one of the most reactive gas and also very toxic gas. When Fluorine reacts with glass along with small amounts of water, it forms silicon tetra fluoride (SiF4). Hence fluorine should be handled with substances like the inert organofluorine compound Teflon.

8 0

3 years ago

Suppose 11.4g of ammonium chloride is dissolved in 250 ml of a 0.3M aqueous solution of potassium carbonate. Calculate the final

Sindrei [870]

Answer:

The molarity of the final ammonium cation is 0.252M

Explanation:

Step 1: Data given

Mass of ammonium chloride (NH4Cl) = 11.4 grams

Volume of 0.3 M aqueous solution of potassium carbonate (K2CO3) = 250 mL = 0.250L

Step 2: The balanced equation

2NH4Cl + K2CO3 → 2KCl + (NH4)2CO3

Step 3: Calculate moles of (NH4)Cl

moles (NH4)Cl = 11.4 grams /53.49 g/mol

Moles (NH4)Cl = 0.213 moles

Step 4: Calculate moles of K2CO3

Moles K2CO3 = Molarity * Volume

Moles K2CO3 = 0.3M * 0.250 L = 0.075 moles

Step 5: Calculate moles (NH4)Cl at the equilibrium

For 2 moles (NH4)Cl consumed, we need 1 mole of K2CO3 to produce 2 KCl and 1 mole of (NH4)2CO3

(NH4)2CO3l will dissolve in 2NH4+ + CO32-

Moles (NH4)2Cl = 0.213 moles - 2*0.075 = 0.063 moles

Moles NH4+ = moles (NH4)Cl = 0.063 moles

Step 6: Calculate Molarity of NH4+

Molarity = Moles / volume

Molarity of NH4+ = 0.063 moles / 0.250 L

Molarity of NH4+ = 0.252 M

The molarity of the final ammonium cation is 0.252M

5 0

3 years ago