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3 years ago

A major landmass on Earth's surface made of crustal rock is a _____. Select one: a. continent b. landform c. formation d. plate

Chemistry

1 answer:

ICE Princess25 [194]3 years ago

5 0

Answer:

a. continent

Explanation:

The major landmasses on the surface of the Earth made out of crustal rock are called continents. The continents are massive land masses. They lie on top of continental tectonic plates which are less dense and higher than the oceanic tectonic plates. In the present there are six continental masses, all with different shape and size. The continental masses that exist in the present are Eurasia, Africa, North America, South America, Australia, and Antarctica.

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At equilibrium, ________. At equilibrium, ________. all chemical reactions have ceased the rate constants of the forward and rev

balandron [24]

Answer:

<em>At equilibrium, the rate of the forward, and the reverse reactions are equal.</em>

Explanation:

In an equilibrium chemical reaction, the rate of forward reaction, is equal to the rate of reverse reaction. Note that the reactions does not cease at equilibrium, but rather, the reactants are converted to product, at the same rate at which the product is also being converted into the reactants in the reaction. When chemical equilibrium is reached, a careful calculation of the value of equilibrium constant is approximately equal to 1.

NB: If the value of equilibrium constant is far far greater than 1, then the reaction will favors more of the forward reaction, and if far far less than 1, the reaction will favor more of the reverse reaction.

6 0

3 years ago

Determine the oxidation state of the metal ion in [cr(h2o)6]3+.

Hunter-Best [27]

Co2 is correct buddy

7 0

4 years ago

Favorable (Exergonic) chemical reactions:

artcher [175]

Answer:

Usually give off heat energy

Explanation:

Exergonic reactions are the ones which are spontaneous. Spontaneous reactions are indicated by the negative change in the Gibbs free energy. In order to provide characteristics for an exergonic reaction, we need to define the Gibbs free energy in terms of the enthalpy change and the entropy change:

$\Delta G=\Delta H-T\Delta S$

Here:

$\Delta H$ is the enthalpy change;

$\Delta S$ is the entropy change;

$T$ is the absolute temperature.

In order to achieve a negative value in the Gibbs free energy change, we should have:

$\Delta H - T\Delta S$

This is true for all temperatures if:

$\Delta H < 0, \Delta S > 0$

The major term here is the change in enthalpy, notice that we wish the enthalpy change to be negative.

Negative enthalpy change corresponds to an exothermic reaction, the one which releases heat. This means exergonic reactions would usually give off heat.

4 0

3 years ago

Anyone could help me out?

Hoochie [10]

1.4 mg/dL = 0.014 g/L

Explanation:

Milligrams per deciliter to grams per liter

There is 1000 grams of mg/dL of 1 g/L

8 0

3 years ago

Read 2 more answers

Which of the following best describes the valence electrons in a polar

Ghella [55]

Answer:

C. The electrons are closer to the atom with the higher

electronegativity.

Explanation:

In a covalent bond, the electrons are shared equally when the atoms involved have the same electronegativity. However, when there are differences of electronegativity between those atoms, the electrons preferred are closer to the atom with the higher electronegativity.

5 0

4 years ago