CHEMISTRY MIDDLE SCHOOL

Which compound will form from the bonding of CA and N ca3N2, Ca2N3, Ca2N2, caN

Answers

Answer 1

Answer:

Answer:

Ca3N2

Explanation:

Ca+2

N-3

Criss cross the charges to get Ca3N2

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Potassium has an atomic number of 19.Which of a potassium atom's electrons are its valence electrons? Select one: a. Those in the third shell from the nucleus. b. Those in the second shell from the nucleus. c. Those in the outermost shell. d. Those in the innermost shell.
Is the sky a solid liquid or gas
What physical property makes metal pots good for cooking?
The only tissue in your body that is able to contract , or shorten

Why are plant cells and animal cells different

Answers

The Plant cell has cell walls to prevent it from basting in case of large amount of water.
while the animal cell doesn't have cell walls.

P.S. PHANTOM SNIPERS

Please help!!!The reaction of sulfuric acid (H2SO4) with potassium hydroxide (KOH) is described by the equation below. Suppose
0.06 L of KOH with unknown concentration is placed in a flask with bromthymol blue indicator. A solution of 0.20 M
H2504 is dripped into the KOH solution. After exactly 0.017 L of H2SO4 is added, the Indicator changes from blue to
yellow. What is the concentration of the KOH? You must show all of your work to earn credit. (4 points)
H2SO4 + 2KOH → K2SO4 + 2H20

Answers

Answer:

$\large\boxed{\large\boxed{1M}}$

Explanation:

1. Reaction

$H_2SO_4+2KOH\rightarrow K_2SO_4+2H_2O$

2. Mole ratio

$(2molKOH)/(1molH_2SO_4)$

3. Sulfuric acid

$Molarity=(moles)/(volume(liters))$

$Moles=Molarity* Volume(liters)$

$Moles=0.20M* 0.017liter=0.034molH_2SO_4$

4. Potassium hydroxide

$(2molKOH)/(1molH_2SO_4)* 0.034molH_2SO_4=0.068molKOH$

$Molarity=(0.068mol)/(0.06liter)=1.13M\approx 1M$

The elements of a heterogeneous mixture can be distinguished visually. What does this mean? a. That two separate elements have been mixed together.
b. That the components of the mixture cannot be separated.
c. That you can see the different component parts of the mixture.
d. That heterogeneous mixtures combine solids and liquids.

Answers

Answer: C. That you can see the different component parts of the mixture.

Explanation: Heterogeneous mixtures does not have a uniform apperance so the individual components of the mixture seen visually and can be separated by physical means.

The elements of a heterogeneous mixture can be distinguished visually. It means that you can see the different component parts of the mixture.

So, the correct answer is c. That you can see the different component parts of the mixture.

When a mixture is described as "heterogeneous," it means that its components are not evenly distributed, and they can be visually distinguished from each other. This is because the components exist in separate phases or regions within the mixture, and they may have different physical properties, such as color, density, size, or state of matter (solid, liquid, gas).

In a heterogeneous mixture, you can physically see or identify the different component parts without the need for specialized equipment or chemical analysis. Common examples include a salad with various ingredients, a bowl of cereal with milk, or a jar of mixed nuts.

The other options are not accurate descriptions of a heterogeneous mixture:

a. Heterogeneous mixtures can consist of more than two components, and they don't necessarily involve separate elements mixed together.

b. Heterogeneous mixtures can often be separated by physical means (e.g., filtration or hand-picking), which distinguishes them from homogeneous mixtures.

d. Heterogeneous mixtures can involve a combination of solids, liquids, or gases, but they are not limited to this combination.

Thus, the correct answer is c. That you can see the different component parts of the mixture.

For more such questions on heterogeneous mixture:

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Which ocean environment changes the most?intertidal zzone

deep ocean

river basin

open ocean

Answers

Open ocean environment changes the most. The dominance of Earth's seas is clearly seen when viewed from space.

What is ocean?

A uninterrupted body with salt water that's also housed inside sizable basins on the surface of the Planet. The dominance of Earth's seas is clearly seen when viewed from space. At an average depth exceeding 3,688 meters, the oceans plus their peripheral seas cover about 71% of the area of the planet.

The remaining 29% of the planet's surface is made up of exposed land, which has a mean height of 840 meters (approximately 2,755 feet). Indeed, the oceans may cover the entire high terrain, reducing Earth to a smooth spherical. Open ocean environment changes the most.

Therefore, open ocean environment changes the most.

To learn more about ocean, here:

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Answer:open

Explanation:

when an iron nail is placed in an aqueous solution of copper(ii)sulphate,a reaction take place.construct an ionic equation for reaction?

Answers

The net ionic equation for this reaction is $Fe(s) \ + \ Cu^(2+)(aq) \ \rightarrow \ Fe^(2+)(aq) \ + \ Cu(s)$ . In ionic equations the soluble compounds are written in their dissociated ion forms. The ionic equation can be determined by knowing the general solubility rules. In this problem there are sulfate compounds involved. It is important to know that sulfates are generally soluble except for sulfates of Ba, Pb, Ag, and Sr. Therefore, the ones dealt with in this problem, CuSO4 and FeSO4, are both soluble in water.

Further Explanation:

The complete equation for this reaction is:

$Fe(s) \ + \ CuSO_(4)(aq) \rightarrow \ FeSO_(4)(aq) \ + \ Cu(s)$

CuSO4 and FeSO4 are soluble in water which will lead to the ionic equation:

$Fe(s) \ + \ Cu^(2+)(aq) \ + \ SO_(4)^ {2-}(aq) \ \rightarrow \ Fe^(2+)(aq) \ + \ SO_(4)^(2-)(aq) \ + \ Cu(s)$

Since the sulfate ion appears on both sides, it is a spectator ion. Spectator ions are unchanged in the chemical reaction and are removed from the net ionic equation:

$\boxed {Fe(s) \ + \ Cu^(2+)(aq) \ \rightarrow \ Fe^(2+)(aq) \ + \ Cu(s)}$

Based on the net ionic equation it can be seen that this is a reduction-oxidation reaction. Iron was oxidized and copper was reduced.

Learn More

Learn more about solubility rules brainly.com/question/11617954
Learn more about redox reactions brainly.com/question/2388654
Learn more about chemical equations brainly.com/question/6976143

Keywords: ionic equation, solubility

This reaction is an explosive reaction of a strong acid combining with a strong base.H2SO4 + 2NaOH → 2H2O + Na2SO4

Which compounds are the reactants and which are the products?

A.
reactants: H2SO4 + 2NaOH
products: 2H2O + Na2SO4

B.
reactants: 2NaOH + Na2SO4
products: H2SO4 + 2H2O

C.
reactants: 2H2O + Na2SO4
products: H2SO4 + 2NaOH

D.
reactants: H2SO4 + 2H2O
products: 2NaOH + Na2SO4

Answers

A) reactants: H2SO4 + 2NaOH and products: 2H2O + Na2SO4
The reactants are found on the left side of the equation, before the arrow.
The products are found on the right side of the equation, after the arrow.

Answer:

A. Reactants: H2SO4 + 2NaOH

products: 2H2O + Na2SO4

Explanation:

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