3. A student was given an unknown metal. The student determined that the mass of the metal was 30.2 g. The student placed the

Chemistry

1 answer:

expeople1 [14]2 years ago

6 0

Answer:

15.1 g/mL

Explanation:

The density of a substance is defined as the ratio of the mass of the substance and the volume of the substance. Mathematically, it is expressed as:

Density = mass in grams/volume in mL

In this case, the mass of the metal = 30.2 g

Volume of the metal = volume of water displaced by the metal.

The volume of water displaced by the metal can be calculated as the final volume of water after placing the metal - initial volume of water before placing the metal.

Hence, volume of metal = 22.0 - 20.0 mL = 2.0 mL

Density of metal = 30.2/2.0 = 15.1 g/mL

The density of the metal is 15.1 g/mL

The identity of the metal is not in the table.

You might be interested in

A chemist heats 100.0 g of FeSO4 x 7H2O in a crucible to drive off the water. If all the water is driven off, what is the mass o

Ierofanga [76]

FeSO₄*7H₂O(s) = FeSO₄(s) + 7H₂O(g)

M(FeSO₄*7H₂O)=278.0 g/mol
M(FeSO₄)=151.9 g/mol

m(FeSO₄*7H₂O)/M(FeSO₄*7H₂O)=m(FeSO₄)/M(FeSO₄)

m(FeSO₄)=M(FeSO₄)m(FeSO₄*7H₂O)/M(FeSO₄*7H₂O)

m(FeSO₄)=151.9*100.0/278.0=54.6 g

m(FeSO₄)=54.6 g

4 0

2 years ago

Read 2 more answers

Which liquid materials have strong odor and weak odor?

densk [106]

Odor refers to the fragrance caused by one or more volatilized chemical compounds. It can be strong or weak. 
Strong odor have: Sodium Hypochlorite, Muriatic Acid, Sulphuric Acid, Ammunlom Sulfide. Butyl ,Butyric Acid, Pyridine

Weak Odors have Spray Glue, Dry Erase Markers, Paint cleaners. Water.

5 0

2 years ago

Which of the following contributes the most hydronium ions to a solution? weak acid strong acid weak base strong base

zavuch27 [327]

The correct answer is the second option. A strong acid contributes the most hydronium ions in a solution. When an acid is in aqueous form, it dissociates into ions namely where one of the ions are hydronium ions. If the acid is a strong one, the ions dissociates completely contributing more hydronium ions.

4 0

2 years ago

You can purchase nitric acid in a concentrated form that is 70.3% HNO3 by mass and has a density of 1.41 g/mL. Describe exactly

Andrej [43]

The way to working out the numbers is to increase the measure of HNO3 required by the molarity to discover what number of moles you require: 0.115. You ought to have the capacity to make sense of the recipe weight H is 1, N is 14, O is 16. The result of the quantity of moles duplicated by the recipe weight ought to give an esteem in grams. You can utilize the thickness to change over to a volume of HNO3 to add to the right volume of water.

6 0

2 years ago

Read 2 more answers

127) Thirty-six colonies grew in nutrient agar from 1.0 ml of undiluted sample in a standard plate count. How many cells were in

SIZIF [17.4K]

Answer:

Explanation:

Since the sample was undiluted the number of colonies is the number that grew on the nutrient agar which is 36 colonies. If it was diluted for example let say 0.1 ml from a dilution in which 1 ml of the sample was added to 9 ml of water, and it grew colonies then 0.1 ml yielded 6 colonies, 1 ml of the diluted sample will yield 60 colonies and 10 ml will have 600 colonies and therefore the 1 ml undiluted sample will have 600 colonies.

6 0

2 years ago