water is mixed with solid calcium nitrate in a beaker. write balanced net ionic equation for the reaction

Answers

Answer 1

Answer: When calcium nitrate is added or mixed with water, the substance would dissociate into its corresponding ions which are calcium and nitrate ions. The ionic equation would be:

Ca(NO3)2 = Ca2+ + NO3-

Hope this answers the question. Have a nice day. Feel free to ask more questions.

Answer 2

Answer:

Answer : The net ionic equation will be,

$Ca^(2+)(aq)+2OH^(-)(aq)\rightarrow Ca(OH)_2(s)$

Explanation :

In the net ionic equations, we are not include the spectator ions in the equations.

Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.

The balanced ionic equation will be,

$2H_2O(aq)+Ca(NO_3)_2(aq)\rightarrow 2HNO_3(aq)+Ca(OH)_2(s)$

The ionic equation in separated aqueous solution will be,

$4H^+(aq)+2OH^(-)(aq)+Ca^(2+)(aq)+2NO_3^(-)(aq)\rightarrow Ca(OH)_2(s)+2H^+(aq)+2NO_3^(-)(aq)$

In this equation, $H^+\text{ and }NO_3^-$ are the spectator ions.

By removing the spectator ions from the balanced ionic equation, we get the net ionic equation.

The net ionic equation will be,

$Ca^(2+)(aq)+2OH^(-)(aq)\rightarrow Ca(OH)_2(s)$

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may i please have a(n) answer choices please because it would be a lot better if it was like that and then ill answer it

How many grams of O2(g) are needed to completely burn 73.7 g of C3H8(g)?

Answers

The balanced reaction is:

C3H8 + 5O2 = 3CO2 + 4H2O

We are given the amount of C3H8 to be reacted with O2. This will be the starting point of the calculations.

73.7 g C3H8 ( 1 mol C3H8/ 44.1 g C3H8 ) ( 5 mol O2 / 1 mol C3H8 ) ( 32.0 g O2 / 1 mol O2 ) = 267.39 g O2

Answer: 267.2 grams

Explanation:

$C_3H_8+5O_2\rightarrow 3CO_2+4H_2O$

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

$\text{Number of moles of propane}=(73.7g)/(44.1g/mol)=1.67moles$

According to stoichiometry:

1 mole of $C_3H_8$ require 5 moles of $O_2$

Thus 1.67 moles of $C_3H_8$ will require = $(5)/(1)* 1.67=8.35moles$ of $O_2$

Mass of $O_2=moles* {\text {Molar mass}}=8.35moles* 32g/mol=267.2$

Thus 267.2 grams of oxygen are required.

How many calories are there in 32 Calories

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Answer:

Explanation:

What is the number of pairs of electrons that are shared between the nitrogen atoms in a molecule of N2?(1) 1(2) 2(3) 3(4) 6

Answers

The answer is (3) 3. The sharing of electrons is important to help elements get 8 electrons in the outer shell to be stable. To achieve this aim, the nitrogen needs to share three pairs of electrons.

The number of pairs of electrons that are shared between nitrogen atoms in a molecule of ${{\text{N}}_{\text{2}}}$ is $\boxed{\left( 3 \right){\text{ 3}}}$ .

Further explanation:

Covalent Bond

It is a type of chemical bond where electrons are mutually shared between the bonded atoms. This bond is also known as a molecular bond. The compounds formed as a result of this bonding are covalent compounds.

Octet Rule

It is a thumb rule that describes the tendency of elements to bond with other elements in order to acquire eight valence electrons. As a result, elements tend to achieve stable noble gas configuration.

The atomic number of nitrogen is 7 and it has an electronic configuration of $1{s^2}2{s^2}2{p^3}$ . Nitrogen has five valence electrons in it and is three electrons short of the stable noble gas configuration of neon. So it can share three electrons with another nitrogen atom to complete its octet. As a result, three covalent bonds are formed between two nitrogen atoms. In other words, nitrogen atoms have a triple bond between them in molecule (For structure, refer to the attached image).

Learn more:

Identification of ionic bonding: brainly.com/question/1603987
Chemical bonds in NaCl: brainly.com/question/5008811

Answer details:

Grade: High School

Chapter: Ionic and covalent compounds

Subject: Chemistry

Keywords:covalent bonds, triple bond, nitrogen, 7, five, three, octet rule, covalent compound, molecular bond, electrons.

How to figure out if compounds are electrolytes

Answers

An electrolyte is a compound that dissolved into its ions when placed into a solvent such as water (the ions can carry an electric charge). An easy way to test whether something is an electrolyte is by placing the substance in Deionized water and testing if the resulting solution can carry a current. If the resulting solution can carry a current, the substance is an electrolyte. I hope this helps. Let me know if anything is unclear.

Makea claim about why cells need ribosomes.
Summarize evidence to support the claim
and explain your reasoning.
ls?

Answers

Cells need ribosomes to make protein.

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