All categories

3 years ago

What does physical characteristics mean

Chemistry

2 answers:

romanna [79]3 years ago

8 0

It means your appearance, and what you have on your physical body.

Marizza181 [45]3 years ago

4 0

Physical characteristics are traits that on the physical body.

You might be interested in

A group of parts that work together is called A) Technology B) system C)process D) feedback

skad [1K]

Answer:

B) System.

Explanation:

It is a group of parts working together. They work together to make a whole, therefore they are all a system when working together.

3 0

3 years ago

a 1.750-g sample of mercury metal ws combined with 1.394 g of bromine. Determine the empirical formula of the mercury bromide th

Airida [17]

Answer:

HgBr₂.

Explanation:

To determine the empirical formula of the mercury bromide that is produced, we should calculate the no. of moles of Hg (1.750 g) and Br (1.394 g) used to prepare the mercury bromide.

no. of moles of Hg = mass/atomic mass = (1.75 g)/(200.59 g/mol) = 0.00872 mol.

no. of moles of Br = mass/atomic mass = (1.394 g)/(79.904 g/mol) = 0.01744 mol.

We divide by the lowest no. of moles (0.00872) to get the mole ratio:

The mole ratio of (Br: Hg) is: (2: 1).

So, the empirical formula is: HgBr₂.

6 0

3 years ago

What technique(s) can be used to remove one solid from a mixture of solids and how?

Harrizon [31]

Answer:

Explanation: Chromatography involves solvent separation on a solid medium. Distillation takes advantage of differences in boiling points. Evaporation removes a liquid from a solution to leave a solid material. Filtration separates solids of different sizes.

5 0

3 years ago

n Trial 1, you will use 0.50 g of aluminum, and in Trial 2, you will use only 0.25 g. Why will you vary the amount of aluminum?

Inga [223]

The aluminum is the independant factor, which means that it is the factor that is tested. it will change from Trial to Trial to try to reap different results.

7 0

3 years ago

For the following reaction, 38.3 grams of sulfuric acid are allowed to react with 33.5 grams of calcium hydroxide sulfuric acid(

Likurg_2 [28]

Answer:

What is the maximum amount of calcium sulfate that can be formed? 53.1 grams CaSO4

What is the FORMULA for the limiting reagent? H2SO4

What amount of the excess reagent remains after the reaction is complete? 4.59 grams of Ca(OH)2

Explanation:

Step 1: Data given

Mass of sulfuric acid = 38.3 grams

Molar mass of H2SO4 = 98.08 g/mol

Mass of calcium hydroxide = 33.5 grams

Molar mass of Ca(OH)2 = 74.09 g/mol

Step 2: The balanced equation

H2SO4 + Ca(OH)2 → CaSO4 + 2H2O

Step 3: Calculate moles of H2SO4

moles H2SO4 = mass H2SO4 / molar mass H2SO4

moles H2SO4 = 38.3 grams / 98.08 g/mol

moles H2SO4 = 0.390 moles

Step 4: Calculate moles of Ca(OH)2

moles Ca(OH)2 = 33.5 grams / 74.09 g/mol

moles Ca(OH)2 =0.452 moles

Step 5: Calculate limiting reactant

For 1 mol H2SO4, we need 1 mol of Ca(OH)2 to produce, 1 mol of CaSO4 and 2 mol of H2O

H2SO4 is the limiting reactant. It will completely be consumed (0.390 moles).

Ca(OH)2 is in excess. There will be consumed 0.390 moles

There will remain 0.452 - 0.390 = 0.062 moles

This is 0.062 * 74.09 g/mol = 4.59 grams

Step 6: Calculate moles of calcium sulfate

For 1 mol H2SO4, we need 1 mol of Ca(OH)2 to produce, 1 mol of CaSO4 and 2 mol of H2O

For 0.390 moles of H2SO4, there will be produced 0.390 moles of CaSO4

Step 7: Calculate mass of CaSO4

Mass CaSO4 = moles CaSO4 * molar mass CaSO4

Mass CaSO4 = 0.390 moles * 136.14 g/mol

Mass of CaSO4 = 53.1 grams

7 0

3 years ago