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ohaa [14]
3 years ago
12

What is the volume of 2.00 moles of chlorine (cl2 ) gas at stp, to the nearest tenth of a liter?

Chemistry
1 answer:
ra1l [238]3 years ago
7 0
22.4L x 2.00 mol = 44.8 L
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Which Kelvin temperatures represent, respectively, the normal freezing point and the normal boiling point of water?
zhenek [66]

Answer:

4. 273 K and 373K.

Explanation:

Conversion from Celsius to Kelvin ..

Kelvin = Celsius + 273

8 0
3 years ago
A _____ exists in the same physical state as that of the reaction it catalyzes.
klio [65]
<span>A Homogeneous Catalyst exists in the same physical state as that of the reaction it catalyzes.

Explanation:
                     
Catalysts are classifies as follow,
                                                      1. Homogeneous Catalyst
                                                      2. Heterogeneous Catalyst

</span>Homogeneous Catalyst are those which are in same phase as that of reactants are.

Example:

         Acetic Acid + Ethanol + H₂SO₄  →  Ethyl Acetate + H₂O + H₂SO₄

In this reaction catalyst and reactants all are in same phase i.e. Liquids.

Heterogeneous Catalyst are those which are in different phase as that of reactants are.

Example:

                                 Ethene + H₂ + Ni  →  Ethane + Ni

In this reaction ethene and hydrogen are gases while Nickle catalyst is in solid state. 
6 0
3 years ago
The density of lava is 3.1 g/cm². It has a volume of 2700 cm3. How much does this block of lava weigh?
konstantin123 [22]

Answer:

Mass of lava is 8370 g.

Explanation:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

Symbol:

The symbol used for density is called rho. It is represented by ρ. However letter D can also be used to represent the density.

Given data:

density of lava = 3.1 g/cm³

volume= 2700 cm³

mass= ?

Solution:

d = m/v

m = d×v

m = 3.1 g/cm³×2700 cm³

m = 8370 g

4 0
3 years ago
What is the volume, in liters, of 7.8 x 10^25 atoms of krypton at STP?
viva [34]

Answer:

-0.758

Explanation:

7 0
3 years ago
Which particle determines the nuclear charge?
Ivan

answer:

atomic number

the same chemical element is characterized by the number of protons in the nucleus that determines the total positive charge.

3 0
3 years ago
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