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3 years ago

A car traveling with constant speed travels 150km in 7200 s. What is the speed of the car

Chemistry

1 answer:

neonofarm [45]3 years ago

4 0

75km/hr

A car traveling with constant speed travels 150km in 7200 s. What is the speed of the car

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How is fractional distillation of crude oil related to stoichiometry

lora16 [44]

Answer:

Fractional distillation is the process by which oil refineries separate crude oil into different, more useful hydrocarbon products based on their relative molecular weights in a distillation tower.

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3 years ago

What must a food handler use to determine the concentration of sanitizing solution?

sattari [20]

I believe a food handler must use a test kit to determine the concentration of sanitizing solution. Sanitizing reduces pathogens on a surface to safe levels. The sanitizer are the agents that are used for sanitizing ; their effectiveness is determined by the factors such as concentration, contact time, pH, temperature, and also water hardness.

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3 years ago

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Hi! help me please. CALCULATE THE NUMBER OF MOLECULES FOUND IN 8 MOL OF WATER?

kvasek [131]

Answer:

so the number of molecules in 8 moles of water is 4.8176×10^24

Explanation:

number of moles=8moles

avogadro's number=6.022×10²³

number of molecules=?

as we know that

$number of moles=\frac{number of molecules}{avogadro's number}$

substituting the equation

number of moles × avogdro's number=number of molecules

number of molecules=8moles×6.022×10²³

number of molecules=4.8176×10^24

i hope this will help you :)

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3 years ago

Give the net ionic equation for the reaction (if any) that occurs when aqueous solutions of Al(C2H3O2)3 and LiNO3 are mixed. Giv

RSB [31]

Answer: No reaction occurs

Explanation:.

Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.

The given chemical equation is:

$Al(C_2H_3O_2)_3(aq)+3LiNO_3(aq)\rightarrow Al(NO_3)_3(aq)+3LiC_2H_3O_2(s)$

The complete ionic equation is;

$Al^{3+}(aq)+3C_2H_3O_2^-(aq)+3Li^+(aq)+3NO_3^-(aq)\rightarrow Al^{3+}(aq)+3NO_3^-(aq)+3Li^+(aq)+3C_2H_3O_2^-(aq)$

The ions which are present on both the sides of the equation are are not involved in net ionic equation.

Hence, there is no net reaction.

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3 years ago

Which statement is correct about the rate of a chemical reaction? A. It increases when the concentration of reactants increases.

Natasha_Volkova [10]

Answer:

It increases when the concentration of reactants increases.

Explanation:

Increasing the concentration of reactants in a reaction increases the amount of reacting molecules or ions which would increase the rate of a chemical reaction. Reaction rate does depend on temperature. Increasing temperature also increases reaction rate because particles move faster with the increased kinetic energy to produce more collisions.

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3 years ago