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IgorC [24]
3 years ago
7

HELPPP ANSWERS ???? A: 3 B: 2 C: 1 D: 4

Chemistry
2 answers:
mariarad [96]3 years ago
6 0

Answer:

B. 2

Explanation:

We see from the reaction side of the equation that we have 2 Li. That means we need the same number of Li on the products side. Therefore, our only option is 2.

IrinaK [193]3 years ago
4 0

Answer:

b

Explanation:

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Explanation:

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3 years ago
write the chemical formula for the following compound -magnesium chloride, zinc sulphide Sodium,sodium sulphate, calcium bicarbo
Sindrei [870]

Answer:

magnesium chloride: MgCl2

zinc sulphide: ZnS

sodium sulphate: Na2SO4

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In the EXPLORE section of your lesson 4.08 on Potential energy there were several animations to watch that provided a graphic il
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Answer:

This is because no energy is being created or destroyed in this system

Explanation:

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7 0
3 years ago
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Use the exponential term in the Arrhenius equation to explain how temperature affects reaction rate.
WINSTONCH [101]

The Arrhenius equation describes the relation between the rate of reaction and temperature for many physical and chemical reactions

It is an expression that provides a relationship between the rate constant (of a chemical reaction), the absolute temperature.

The Arrhenius equation,

k = zpe^{\frac{- Ea}{RT} }, where

k is the rate constant,

z is the collision factor,

p is the steric factor,

Ea is the activation energy,

R = 8.3245 \frac{J}{mol. K} is the ideal gas constant, and,

T is the temperature.

The activation energy by definition, is the minimum energy (or threshold energy) required for two particles of reactants upon collision to form products.

The Arrhenius equation could also be written as:

⇒ k = Ae\frac{-Ea}{RT}, where

⇒ A = zp, the Arrhenius factor.

Taking the neutral logarithm of both parties, we get:

⇒ In k = \frac{-Ea}{RT}\frac{(1)}{(T)} + In A,

Assuming that, A is independent of temperature, when T is increased, the equilibrium constant k will also increase and therefore, the rate of the reaction will also increase.

To learn more about Arrhenius equation here

brainly.com/question/9786461

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2 years ago
What important points do you need to remember about combustion?
goldenfox [79]

Explanation:

A substance burning in the presence of oxygen and leads to the formation of heat and light is called combustion.

Some important points about combustion are as follows:

  • Fuel should be present for burning.
  • Air should be present for the supply of oxygen.
  • There should be heat (or ignition temperature) to initiate the chemical reaction.
7 0
3 years ago
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