Please help me complete the following word equations:) also write the balanced equation, full ionic equation, and net ionic equation. Also include the states:)

a) zinc nitrate + calcium sulphide—>

b) potassium + calcium chloride—>

Answer: H2O

Explanation: The alcohol family has properties similar to H2O.

Answer:

H2O

Explanation:

Answer:

ocean heats up and cools down relatively slowly. Therefore, areas near the ocean generally stay cooler

Answer:

Chemical reactions happen when two or more molecules interact and the molecules change.

Explanation:

Bonds between atoms are broken and created to form new molecules. That's it.

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Answer:

What is the oxidation half reaction for iron?

The two elements involved, iron and chlorine, each change oxidation state; iron from +2 to +3, chlorine from 0 to -1. There are then effectively two half-reactions occurring. These changes can be represented in formulas by inserting appropriate electrons into each half-reaction: Fe2+ → Fe3+ + e.

Hope this helps..

Answer:

The product is hydrogen chloride gas

Volume of product = 800 ml

Explanation:

Equation of the reaction;

H2 + Cl2 ----> 2HCl

From the above balanced chemical equation, 1 mole of hydrogen gas, H2 reacts with 1 mole of chlorine gas, Cl2 to produce 2 moles of hydrogen chloride gas, HCl.

The mole ratio of reactants and products is 1 : 1 ---> :2

According to Gay-Lussac's law of combining volume which states that the volume of gases which take part in a chemical reaction bear a simple whole number ratio to one another and to the volume of products, if gaseous, at constant temperature and pressure.

Therfore, if 400 ml each of hydrogen and chlorine gas react, the product will be 2 * 400 ml of Hydrogen chloride gas = 800ml of hydrogen chloride gas

Answer: Boron is the element which has properties of both metals and nonmetals.

Explanation:

Metals are defined as the elements which loose electrons to attain stable electronic configuration. They attain positive charge and form cation. Example: Zinc (Zn), Aluminium (Al) , copper (Cu)

Non-metals are defined as the elements which gain electrons to attain stable electronic configuration. They attain negative charge and form anion. Example: Chlorine (Cl) , Sulphur (S)

Metalloids are defined as the elements which show properties of both metals and non-metals. There are 7 metalloids in the periodic table. They are Boron (B) , Silicon (Si) , Germanium (Ge) , Arsenic (As) ,  Antimony (Sb), Tellurium (Te) and Polonium (Po).

Thus boron is the element which has properties of both metals and nonmetals.

Answer:

The answer is A boron!!!!!!

Explanation:

i took the quiz on ed

Answer:

b - 385 j

Explanation:

Answer:

An acidic substance is any substance with a pH of less than 7, the smaller the number the more acidic it is. ... An acid is a substance that donates hydrogen ions. Because of this, when an acid is dissolved in water, the balance between hydrogen ions and hydroxide ions is shifted.

Explanation:

Answer:

C)We cannot be sure unless we find out its boiling point.

Explanation:

I will like to clearly state that simply comparing two compounds will not tell us exactly which one will be a liquid, solid or gas at room temperature.

If I want to determine whether an unknown substance will be a liquid at room temperature, I will have to measure its boiling point. If the boiling point is above room temperature, and the melting point is below room temperature, it’s a liquid. If the boiling point of the unknown substance is below room temperature, it is a gas.

This confirms that we cannot conclude on the state of matter in which a compound exists unless we know something about its boiling point, not by inspecting the properties of neighbouring compounds in the same homologous series

We cannot predict from this information provided whether C4H10, butane, will be a liquid at room temperature because We cannot be sure unless we find out its boiling point (option c)

Normally, Butane is a gas at room temperature and pressure. However too, if it is put under pressure, its boiling point rises. At a pressure of 2.13 x 105 Pa, its boiling point goes up to -25 °C which is obviously higher than room temperature. So, by putting butane at a pressure of just over 2 atm, it is a liquid at room temperature.

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Answer: constant

Explanation:

Processes like nitrogen fixation, lightning, and the cycle results the nitrogen atmosphere to  remain less constant

Answer and Explanation:

In H2O molecules, due to formation of intermolecular hydrogen bonds, there is molecular association. Large amount of energy is required to break these intermolecular hydrogen bonds. Intermolecular hydrogen bonding is not possible in H2S. Hence, its boiling point is lower and is a gas.

Answer:

The correct option is;

c. 0.167

Explanation:

The parameters given are;

The mean, μ = 13.9 Gigagrams/year

The standard deviation, σ = 5.8 Gigagrams/year

The z-score formula is given as follows;

[tex]z = \dfrac{x - \mu }{\sigma }[/tex]

Where:

x = Observed score = 11.5 Gigagrams/year

We have;

[tex]z = \dfrac{11.5 - 13.9 }{5.8 } = \dfrac{-2.4 }{5.8 } = 0.4138[/tex]

From the z-score table relations/computation, the probability (p-value) = 0.6605

Where:

x = Observed score = 14 Gigagrams/year

We have;

[tex]z = \dfrac{14- 13.9 }{5.8 } = \dfrac{0.1}{5.8 } = 0.01724[/tex]

From the z-score table relations/computation, the probability (p-value) = 0.4931

Therefore, the probability, [tex]p_{ca}[/tex], that the amount of carbon emissions from cars in Belgium for a randomly selected year are between 15.5 Gigagrams/year and 14 Gigagrams/year = The area under the normal curve bounded by the p-values for the two amounts of carbon emission

Which gives;

[tex]p_{ca}[/tex] = 0.6605 - 0.4931 = 0.1674 ≈ 0.167

Therefore, the correct option is c. 0.167.

Answer:

Inertia in our body tends to be in the situation it is. So, we a car comes to a halt, our body wants to keep moving i.e. in motion. hope that helps love!

Answer:

Because graphite has delocalised electrons ,just like metal

Graphite is the allotrope of carbon. Allotropes are chemical compounds of the single element present and arranged in a complex form.

The uses of the graphite are as follows:-

Graphite the is allotropes of the carbon which means it has a free electron in the valence shell. In graphite, there is one free electron which moves from one place to another.

The movement of transferring the electron in the compound can allow the graphite to conduct heat.

Hence, the free electron is the answer.

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Answer:

d) burning fossil fuels

Explanation:

We humans burn fossil fuels the most

Answer:

The 2s orbital is at a higher energy level.

Explanation:

1s and 2s are the sub-orbitals that are located in an atom. They are nearest to the nucleus and are found on the s sub-orbital. The difference between 1s and 2s is the difference in their level of energy. 1s has low energy as compared to 2s. 1s orbital has the lowest energy because it is located closed to the nucleus. 2s orbital has higher energy than 1s because it's orbit is larger than 1s.

Answer:

Water that is present beneath the Earth's surface

Answer: [tex]CS_2+3Cl_2\rightarrow CCl_4+S_2Cl_2[/tex]

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products formed must be equal to the mass of reactants taken.

In order to get the same mass on both sides, the atoms of each element must be balanced on both sides of the chemical equation.

The given chemical equation is:

[tex]CS_2+Cl_2\rightarrow CCl_4+S_2Cl_2[/tex]

The balanced chemical equation is:

[tex]CS_2+3Cl_2\rightarrow CCl_4+S_2Cl_2[/tex]

Answer:

blank, 3, blank, blank

Explanation:

Answer:

c

Explanation:

the rest are chemical properties

Answer:

[tex]n_{Na_2CO_3}=0.28molNa_2CO_3[/tex]

Explanation:

Hello,

In this case, the undergoing chemical reaction is:

[tex]Na_2CO_3(aq)+CaCl_2(aq)\rightarrow CaCO_3(aq)+2NaCl(aq)[/tex]

Hence, given the solution of calcium chloride, we can compute its reacting moles:

[tex]n_{CaCl_2}=0.35\frac{mol}{L}*803.1mL*\frac{1L}{1000mL}= 0.28molCaCl_2[/tex]

Thus, by knowing there is a 1:1 molar ratio between sodium carbonate and calcium chloride, we can easily compute the moles of sodium carbonate needed for a complete precipitation as shown below:

[tex]n_{Na_2CO_3}=0.28molCaCl_2*\frac{1molNa_2CO_3}{1molCaCl_2} \\\\n_{Na_2CO_3}=0.28molNa_2CO_3[/tex]

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Answer:

80.0 mL

Explanation:

V1/V2 = T1/T2

T1 = 273 -123 = 150K

T2 = 273 +27 = 300 K

40.0 mL/V2 = 150K/300K

V2 = 40.0 mL*300K/150K = 80.0 mL

The volume that is occupied at 27°C, assuming pressure is constant is 80ml.

The Ideal gas law is the equation of state of a hypothetical ideal gas. It is a good approximation to the behaviour of many gases under many conditions, although it has several limitations. The ideal gas equation can be written as

                          PV = nRT

where,

P = Pressure

V = Volume

T = Temperature

n = number of moles

Given,

Initial Volume = 40 ml

Initial temperature = -123°C = 273 - 123 = 150K

Final temperature = 27°C = 273 + 27 = 300K

From Charles' law,

V₁ / T₁ = V₂ / T₂

V₂ = (40 × 300) ÷ 150

= 80 ml

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Answer:

well person with a question it would be 356 an atom for eveyday of the year but every four years it would be 366 atoms

Explanation:

Answer:

hex-

Explanation:

Prefix Prefix meaning Sample word

hex-           6                                  hexapod: having six legs, an insect, for      

                                                                   example.

Answer:

Hex-

Explanation:

Answer:

D. all of the above

Explanation:

Ice made from water is a solid because the atoms or molecules

- vibrate in place

- are unable to move around

- are closely packed and touching

In a solid, the atoms or molecules are unable to move around so they just vibrate in fixed positions and they are closely packed and touching.

Answer:

Option D.

Explanation:

Isomerism is a phenomenon where by two or more compounds have the same molecular formula but different structural patterns. The compounds involved are called isomers.

Option A has two different compound with two different molecular formula. Hence they are not isomers.

Option B has two different compound with two different molecular formula. Hence they are not isomers

Option C can not be called isomers because Isomerism can not occur in compound having just 1 carbon atom.

Option D has two different compound with the same molecular formula as C3H8O and their structure are different. Hence they areisomers.

Answer:

No

Explanation:

Are two atoms of the same element identical?

No they are not, for multiple reasons,

1) Heisenberg uncertainty principle: Electrons don't have a definite position, and direction of motion, at the same time. So we can only know of the two. Therefore the atoms are not identical in terms of the location or direction of motion at any fixed point in time.

2) Isotopes, while the number of protons in the nucleus determine the element, atoms of the same element can have different numbers of neutrons in their nuclei.

3) Electrons again, atoms can exist in energized states, therefore we may have a different number of electrons

the answer is 17.031 g/mol

Answer:

17.031 g/mol

Explanation:

hard to explanation