I need help with some science

Is length an extensive or intensive physical property?

kati45 [8]

Answer:

The answer to your question is length is an extensive property

Explanation:

There are two physical properties: extensive and intensive properties.

An extensive property is a property that depends on the amount of matter.

An intensive property is a property that does not depend on the amount of matter.

7 0

3 years ago

How does an increase in reactant concentration affect the rate of reaction?

Trava [24]

Option A is the correct option.

In terms of the collision theory, increasing the concentration of a reactant increases in the number of collisions between the reacting species per second and therefore increases the reaction rate.

7 0

3 years ago

Given LiCl, NaCl, KCl, MgCl2, and SrCl2, arrange the compounds in order of increasing lattice energy.

Oksanka [162]

Answer:- $KCl$

Explanations:- Lattice energy depends on two factors, charge and size.

High charge and small size gives higher lattice energy where as low charge and bigger size gives lower lattice energy.

in LiCl, NaCl and KCl, the anion is same and also the charges for Li, Na and K are also same. The deciding factor here is the size of cations. Since the size increases as we move down a group, the order of size of these three atoms is Li<Na<K.

The order of lattice energy is exactly opposite as it's increases as the size decreases.

Now, if we look at magnesium chloride and strontium chloride then again the anion is common but the metals have higher charge as compared to the alkali metals(Li, Na and K). So, lattice energy values must be higher for these two compounds. If we compare Mg and Sr then size of Mg is smaller and so the lattice energy would be greater for this.

Hence, the increasing order of lattice energy is $KCl$ .

4 0

3 years ago

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How many elements are in H2O

8090 [49]

Answer: bale 2 elements sya ang mga yon ay hydrogen at oxygen.

H2O is a molecule made of H for hydrogen and O for oxygen. There are 12 of these molecules. The smaller number is the number of atoms of the element to the left of it.

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8 0

3 years ago

Why are nutrient molecules important?

ycow [4]

Answer : Option A) The body breaks down the molecules into molecules they need.

Explanation : Nutrient molecules are important because the body breaks the nutrient molecules and convert it into the absorb-able molecule that can generate energy for doing the activities of the body.

Nutrients are taken in the body in the form of carbohydrates which later on gets broken into glucose molecules and generates energy, proteins which is decomposed into amino acids, fats breaks down into fatty acids, minerals and salts are also nutrients which is essential nutrient for body.

4 0

4 years ago

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