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3 years ago

What is the most specific classification of Ca(NO3)2

2 answers:

7 0

"Compound" is the one among the following choices given in the question that is the most specific classification of Ca(NO3)2. The correct option among all the options that are given in the question is the second option. It is actually an inorganic compound. I hope that this is the answer that has come to your help.

NISA [10]3 years ago

7 0

Answer: Option (b) is the correct answer.

Explanation:

A compound is defined as the substance in which different atoms chemically combine together in a fixed ratio by mass.

For example, $Ca(NO_{3})_{2}$ is a compound as here both calcium ion and nitrate ion chemically combine together.

A compound can be broken down into its constituent particles.

Whereas an atom is the smallest particle present in a substance. It is indivisible in nature.

A molecule is a substance that contains either same or different atoms which are chemically combined together.

For example, $Cl_{2}$ , $H_{2}O$ etc are molecules.

An element is a substance that consists of only same type of atoms.

For example, aluminium element will consists of only aluminium atoms.

Thus, we can conclude that compound is the most specific classification of $Ca(NO_{3})_{2}$ .

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A reaction occurs in a calorimeter, resulting in the starting and final temperatures shown below. What can you say about the rea

ELEN [110]

"The reaction is exothermic and ΔH is negative" can be understood about the reaction and the enthalpy change (ΔH) during the reaction.

Option: D

Explanation:

When the reaction is positive, the process becomes endothermic, i.e. heat appears to be consumed by the system because the reaction products are more enthalpic than the reactants. When the reaction is negative, on the other hand, the process is exothermic, which is the total decrease in enthalpy is caused by heat production. Here the initial temperature is 21.0 C but increase in final temperature to 38.8 C, because if some processes require heat, others must give off heat when they take place.

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3 years ago

How many moles are in 91.5 grams of Helium?

konstantin123 [22]

In order to find the number of moles with a given mass of Helium, we need to use its molar mass, which is 4.0026g/mol, therefore we will have:

4.0026g = 1 mol of Helium

91.5g = x moles of Helium

x = 22.86 moles of Helium in 91.5 grams

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1 year ago

Using the table on the right, complete each calculation by typing in the correct answer.

Pavel [41]

Answer:

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Explanation:

multiply by 1000 to go from L to mL

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3 years ago

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zubka84 [21]

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3 years ago

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Give two different conditions under which long chain hydrocarbons may be cracked.

sammy [17]

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