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lbvjy [14]
2 years ago
7

1. There are how many mol of oxygen in 3.5 mol of caffeine.

Chemistry
1 answer:
inysia [295]2 years ago
3 0

Answer:

7 mol

Explanation:

Caffeine molecular formula C8H10N4O2. It has 2 atoms of oxygen.

                          C8H10N4O2         - 2O

                           1 mol                        2 mol

                           3.5 mol                    x mol

x = 3.5*2/1 = 7 mol

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Which chemical equation represents a decomposition reaction?
MrMuchimi

Decomposition reaction D. 2H20⇒ 2H2 + O2

<h3>Further explanation </h3>

Every chemical reaction involves a compound consisting of reactants and products  

Reactants are compounds that react and form new compounds called products

There are several forms of reactions that can occur, including single replacement, double replacement, synthesis, decomposition, etc.

A. 2C2H6 + 702 ⇒ 4CO2 + 6H20

Combustion : reaction of Hydrocarbon and Oxygen

B. AgNO3 + LiCl → AgCl + LINO3

Double replacement : there is an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product

C. Ca + MgS → CaS + Mg

Single replacement :one element replaces the other elements of a compound to produce new elements and compounds

D. 2H20⇒ 2H2 + O2

Decomposition : One compound breaks down into 2 components

8 0
2 years ago
according to the kinetic molecular theory the pressure exerted by a sample of gas at constats volume doubles when the absolute t
ozzi

Answer: gas molecules will hit the container walls more frequently and with greater force

Explanation:

According to the postulates of  kinetic molecular theory:

1. The pressure exerted by a gas in a container results from collisions between the gas molecules and the container walls.

2. The average kinetic energy of the gas molecules is proportional to the kelvin temperature of the gas.

When the temperature is increased, so the average kinetic energy and the rms speed also increase. This means that the gas molecules will hit the container walls more frequently and with greater force because they are all moving faster. This increase the pressure.

7 0
3 years ago
A Helium Balloon contains 24.3 moles of Helium Gas. How many grams of Helium is this?
Gnesinka [82]
Mass= number of moles multiply Mass of one mole
= 24.3 multiplied by 4
= 96.2
4 0
3 years ago
Read 2 more answers
A homogenous mixture that is mainly composed of water is referred to as a(n) __________ solution.
rosijanka [135]

Answer:

solvent solutions

Explanation:

.............

7 0
2 years ago
A small amount of liquid bromine is added to a container which is then sealed.
stira [4]

Answer:

This answer is....

Br2 (l)

8 0
2 years ago
Read 2 more answers
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