All categories

3 years ago

Calculate the formula unit mass of CaCl2

1 answer:

3 0

Formula unit mass is defined as the sum of the mass of all the atoms each multiplied its atomic masses that are present in the empirical formula of a compound. It is expressed in amu.

Atomic mass of calcium = 40 amu

Atomic mass of chlorine = 35.5 amu

Formula mass of CaCl2 = (1 x 40) + (2 x 35.5) = 111amu.

You might be interested in

Calculate the frequency of light having wavelength of 456 nm.

Lubov Fominskaja [6]

Answer:

Calculate the frequency of light having wavelength of 456 nm.

1.22*10^8nm

Explanation:

7 0

2 years ago

What is the electron configuration for La (lanthanum)?

MrRissso [65]

Answer:

Lathanum .

Atomic number = 57

Symbol = La

Atomic weight = 138.9

No of energy orbitals = 6

Electronic configuration

$[Xe]6s^25d^1$

7 0

3 years ago

Chemical and physical properties for Benzoyl peroxide?

pishuonlain [190]

Physical Properties :

It is a crystalline colorless solid structure it is soluble in solution such as ether, alcohol, and chloroform but insoluble in water.

It is dangerous when it is dry and is very volatile and decomposes when it reaches 103 c.

2. Chemical Properties :

It causes swelling of the skin and undergoes free radical products that are highly reactive.
It is irritant when it contacts the skin it breaks down to yield oxygen and benzoic acid.

Explanation:

Benzoyl Peroxide is widely used in industry at large scale.
It is formed when there is a reaction between hydrogen peroxide and benzoyl chloride.
Benzoyl peroxide is used in bread and cheese as the bleaching agent and also used in cosmetics as hair coloring.
Because of its antibacterial property and a peroxide group it is applied to the human skin to treat acne.

4 0

3 years ago

1.40 m3 is how many mL

Zarrin [17]

$\LARGE{ \boxed{ \rm{ \pink{Solution:}}}}$

We know, 1 m³ of space can hold 1000 l of the substance.

⇛ 1 m³ = 1000 l----(1)

And, 1 l is 1000 times more than 1 ml

⇛ 1 l = 1000 ml------(2)

So, From (1) and (2),

⇛ 1 m³ = 1000 × 1000 ml

⇛ 1m³ = 1000000 ml

We had to find,

⇛ 1.40 m³ = 1.40 × 1000000 ml

⇛ 1.40 m³ = 140/100 × 1000000 ml

⇛ 1.40 m³ = 1400000 ml

⇛ 1.40 m³ = 14,00,000 ml / 14 × 10⁵ ml / 1.4 × 10⁶ ml

☃️ So, 1.40 m³ = 14 × 10⁵ ml / 1.4 × 10⁶ ml.

━━━━━━━━━━━━━━━━━━━━

5 0

3 years ago

Read 2 more answers

What volume does 76 g of fluorine gas occupy at stp?

solong [7]

2 * 22.4 = 44.8 liters (if using pre 1982 standard) 2 * 22.7 = 45.4 liters (if using 1982 and later standard) First, let's determine how many moles of F2 we have. Atomic weight fluorine = 18.998403 Molar mass F2 = 2 * 18.998403 = 37.996806 g/mol Moles F2 = 76 g / 37.996806 g/mol = 2.000168119 mol Now we have a minor problem. What definition of STP are you using? Up until 1982, STP was defined as 0Â°C and 1 atmosphere (101.325 kPa) From 1982 and later, STP was defined as 0Â°C and 100 kPa Because of the difference in pressure between the two different definitions of STP, the molar volume of a gas is 22.414 liter/mol using the pre-1982 definition and 22.711 liter/mol using the 1982 and later definition. So you get to choose which of the following 2 answers. 2 * 22.4 = 44.8 liters (if using pre 1982 standard) 2 * 22.7 = 45.4 liters (if using 1982 and later standard) Unfortunately there's still a large number of text books in use using the standard that should have been obsolete 35 years ago.

4 0

3 years ago

Calculate the formula unit mass of CaCl2​

Calculate the formula unit mass of CaCl2