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3 years ago

How water deposits soil sediment and rock

1 answer:

6 0

Water deposits soil ,sediments ,and rock by moving them to a different place .Say like a beach .The ocean is currently moving the bits of sand and (glass:sand)rock pieces and always ending up in new places.Same as a river.!!!!

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The charges and sizes of the ions in an ionic compound affect the strength of the electrostatic interaction between the ions and

Citrus2011 [14]

Answer:

NaCl>MgCl2> MgS>KBr

Explanation:

The smaller the cation, the higher the lattice energy of the compound

8 0

3 years ago

Is the formation of sulfur tetrafluoride monoxide endothermic or exothermic?

sleet_krkn [62]

endothermic means it absorbs energy while exothermic means it releases energy. remember this.

4 0

2 years ago

Consider the reaction ch3oh(l)→ch4(g)+1/2o2(g). part a calculate δrh∘298.

Vsevolod [243]

To determine the standard heat of reaction, ΔHrxn°, let's apply the Hess' Law.

ΔHrxn° = ∑(ν×ΔHf° of products) - ∑(ν×ΔHf° of reactants)
where
ν si the stoichiometric coefficient of the substances in the reaction
ΔHf° is the standard heat of formation

The ΔHf° for the substances are the following:
CH₃OH(l) = -238.4 kJ/mol
CH₄(g) = -74.7 kJ/mol
O₂(g) = 0 kJ/mol

ΔHrxn° = (1 mol×-74.7 kJ/mol) - ∑(1 mol×-238.4 kJ/mol)
ΔHrxn° = +163.7 kJ

8 0

3 years ago

Read 2 more answers

Fill in the blank questions usually require

TiliK225 [7]

The answer is a because a fill in the blank is always just one word

6 0

2 years ago

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What is the significance of "Er" in the diagram?

Drupady [299]

Answer:

The significance of "Er" in the diagram is :

B.) Threshold energy for reaction

Explanation:

Threshold energy : It is total amount of energy required by the reactant molecule to reach the transition state .

Activation energy : It is the excess energy absorbed by the molecules to reach the transition state.

Activation Energy = Threshold Energy - Average Kinetic Energy

This means Activation energy decreases on increasing kinetic energy

On increasing Temperature average kinetic energy of the molecule increases which reduces the activation energy and the reaction occur faster in that case.

Catalyst also reduces the Activation energy.

Er = Threshshold energy for reaction at 30 degree

Ea = Activation Energy

The given figure shows that the threshold energy decreases on increasing the temperature

Only the molecule having energy greater than Er can react to form product

3 0

3 years ago

Read 2 more answers