Determine the molar mass of Ze(NO3)2. (Ze=55.85 N=14.01 O=16.00) *
Help

Answers

Answer 1

Answer:

179.87 g/mol

Explanation:

First you need to determine the number of each elements in the molecule.  This information comes from the molecular formula.  

Ze(NO3)2 tells us that there is 1 Ze atom and 2 NO3 anions per molecule.  each NO3 anion will have 1 nitrogen and 3 oxygens.  Due to that, one molecule of Ze(NO3)2 will have 1 atom of Ze, 2 atoms of nitrogen (N), and 6 atoms of oxygen (O).

Next you need to add all of the individual atom's molar masses to get the over all molar masses.  The molar masses of each element is in the question but it can also be found on the periodic table.

molar mass of Ze(NO3)2 = 55.85g/mol + (14.01g/mol*2) + (16.00g/mol*6)

molar mass of Ze(NO3)2 = 179.87 g/mol

I hope this helps.


Related Questions

How many total electrons does Fluorine have?

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Answer:

nine electrons

Explanation:

Answer:

There are 9 total electrons. There is always the same number of protons and neutrons so the charge in the atom balances out. The atomic number is the number of protons, and electrons.

Explanation:

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Coefficients with the lowest ratio indicate the relative amounts of substances in a reaction. For example, chemical reaction: 2H₂ + O₂ → 2H₂O

Advantages and disadvantages of solar power

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Advantakes= it is a renewable source, you can but it anywhere with sunlight

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Why packaging lemons in cans might not be a good idea?

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it might explode and the lemon might get in your eyes or face, which I heard it hurts a lot thanks to tv shows when I was growing up.

Coefficients are used in a chemical formula to show the number of each element. True or False

Answers

Answer:

The same number of each element present before the reaction takes place must also be present on the product side of the equation. Coefficients are placed in front of a chemical formula to show the number of moles of that substances that are necessary for the reaction to occur.

Explanation:

Which form of energy can be connected closely to climate change?
hydroelectric

coal

solar

wind

Answers

Answer:

coal

Explanation:

Hope this helps please mark brainliest

The ability to exert a force that causes an item to move is what is meant by the definition of energy as the "power to accomplish work." Even though the definition is unclear, the meaning is clear: energy is simply the force that moves things. Potential energy and kinetic energy are the two categories of energy.

Which source of energy has a direct impact on climate change?

Renewable energy is frequently cited as the most important shift the world can make to fend off the worst consequences of global warming. This is due to the fact that renewable energy sources like solar and wind don't produce greenhouse gases like carbon dioxide, which contributes to global warming.

Wind, sunlight, bioenergy (organic matter burned as fuel), and hydroelectricity, including tidal energy, are a few examples of renewable energy sources.

The ability to exert a force that causes an object to move is what the definition of energy as "power to accomplish work" refers to. Despite the ambiguity of the definition, the meaning is clear: energy is simply the force that moves things. The two types of energy are potential energy and kinetic energy.

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How many liters of NO2 are in 80.0 grams at STP

Answers

Answer: answwer is22.4 L

At STP that is standard temperature and pressure 22.4 liters of NO₂ are present in 80 grams.

What is standard temperature and  standard pressure?

Standard temperature and pressure are defined as a standard set of conditions required for experimental measurements which are established to allow comparison between different sets of data.

Standards which are commonly used are those International Union of pure and applied chemistry and national institute of standards and technology.These are not universally accepted standards but are the ones which are commonly used.

Standard conditions of pressure and temperature are necessary to define standard reference conditions used to express volumes of liquids and gases.

These values are important to physicists, chemists ,engineers ,pilots and navigators.

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a metal worker uses a cutting torch that operates by reacting acetylene gas, C2H2(g), with oxygen gas, O2(g), as shown in the unbalanced equation below: C2H2(g)=O2(g)= CO2(g) = H2O(g) = heat determine the mass of 25 moles of acetylene (gram-formula mass = 26 g/mol

Answers

Answer:

650 grams

Explanation:

Given that acetylene gas reacts with oxygen to produce caobon dioxide, water and heat and the unbalnced equation is

[tex]C_2H_2(g)+O_2(g) \rightarrow CO_2(g) + H_2O(g)+ heat[/tex]

Gram-formula mass of [tex]C_2H_2= 26[/tex] g/mol

So, mass of 1 mole of acelylene is 26 grams

Therefore, mass of 25 moles of acelylene=25x26=650 grams

Hence, the mass of 25 moles of acelylene is 650 grams

The mass of 25 moles of acetylene has been 0.65 kg.

Moles are the count of a number of molecules in an entity and the mass based on the formula mass. 1 mole of a substance has [tex]\rm 6.023\;\times\;10^2^3[/tex] molecules.

The moles can be calculated as:

Moles = [tex]\rm \dfrac{weight}{molecular\;weight}[/tex]

Given, mole of acetylene = 25 mol

molecular mass of acetylene = 26 g/mol

Mass of acetylene = moles [tex]\times[/tex] molecular weight

Mass of acetylene = 25 [tex]\times[/tex] 26

Mass of acetylene = 650 grams

1000 grams = 1 kg

650 grams = 0.65 kg.

The mass of 25 moles of acetylene has been 0.65 kg.

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All objects have mass
O True
O False

Answers

The answerrrrr is truw


Using the diagram to guide your answer, which of the following statements are true? Choose all that apply.

I The reactants (initial) contain 6 atoms of hydrogen and 2 atoms of nitrogen
The products (final) contain two atoms of nitrogen and six atoms of hydrogen
I The number of atoms is the same in the initial and final boxes
2 molecules of nitrogen react with 3 molecules of hydrogen to produce 2 molecules of ammonia
The number of molecules is the same in the initial and final boxes

Answers

Answer: The reactants (initial) contain 6 atoms of hydrogen and 2 atoms of nitrogen

The products (final) contain two atoms of nitrogen and six atoms of hydrogen

The number of atoms is the same in the initial and final boxes

Explanation:

Atom is the smallest unit of an element which may or may not exist independently.

Molecule is the smallest unit of a pure substance that consists of two or more atoms held together by a chemical bond .

Molecule of a Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.  Example:  [tex]NH_3[/tex]

Molecule of an element is a pure substance formed by combination of same types of atoms bonded by a chemical bond. Example: [tex]H_2[/tex] and [tex]N_2[/tex]

Here one molecule of nitrogen ([tex]N_2[/tex]) combines with 3 molecules of hydrogen ([tex]H_2[/tex]) to give 2 molecules of ammonia. ([tex]NH_3[/tex]).

A reaction begins with 130.5g of substance X and substance Y. How many grams of
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A) not enough information provided
B) 100g
C) 65.25g
D) 130.5g

Answers

Answer:

130.5g

Explanation:

At the of the reaction, the combined mass of X and Y will be 130.5g.

The premise for this conclusion is based on the law of conservation of matter.

This law states that "in a chemical reaction, matter is neither created nor destroyed but changed from one form to another".

In essence, in a chemical reaction, there is no mass loss.

The amount of product in the reaction is expected to be the same as the amount of reactants used in the experiment. When we start with 130.5g then we should end with 130.5g

What is the freezing point of neon F and C?

Answers

Answer:

-415.5°F and -246°C

Explanation:

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Answers

Lowest Cs, Na, highest is At

Answer:

Lowest Cs, Na, highest is At

Explanation:

What are the characteristics of a neutron

Answers

Answer:

The no. Of neurons are equal to the number of protons

The __________________ is the process by which gases in the atmosphere absorb and reradiate heat.

Answers

Answer:

I am sure it is the greenhouse effect

Explanation:

Answer:

the greenhouse effect

I think this is the answer. Pls correct me if I'm wrong.

Based on the diagram shown, how many electrons does this atom have?
a.six
b.three
c.nine
d.one

Answers

Answer:

B. Three

Explanation:

The three dots that are surrounding the nucleus are electrons.

Explanation:

According to the diagram, the atom has 3 electrons.

Electronic configuration =

1s² 2s¹

Element = LithiumSymbol = LiPeriod = 2Group = 1 (Alkali metal) valency = 1

Therefore,

Option B is correct✔

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Answers

Answer:

the dessert

Explanation:

because it is dry and very few anmals live there

Which of these is an example of a biotic factor?
hot desert sun
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Mojave grasshoppers

Answers

Answer: Mojave grasshopper

Explanation: this is the answer because it is living

Answer: Mojave Grasshopper

A biotic factor is something that it living. An abiotic factor is something that is nonliving. The only object that is living in the choices is the grasshopper. :)


What type of rock is this?

Answers

Answer:

I'm gonna say igneous

Explanation:

The texture looks rough and the rock looks like it's composed of different types of minerals making it an igneous rock

I hope this helps :)

Answer: Igneous

Explanation: Igneous rock, or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust.

Which sentence needs to be broken into two separate sentences?

Science fiction was not Barry's favorite genre, so he looked for a short book to read.

When Barry finished reading the novel, he decided that he liked science fiction after all.

The novel Barry chose was so short that he read it in one night it was that good too.

Barry's teacher told the class that they would have to read a science fiction novel

Answers

Answer:

The third sentence.

Explanation:

It could be: The novel Barry chose was so short that he read it in one night. It was that good too.

Or

The novel Barry chose was so short that he read it in one night; it was that good too.

Answer:

The novel Barry chose was so short that he read it in one night it was that good too.

Explanation

Science hmk due tmr morning need help!! pls answer all 3 and number which one is which for example...
1.j
2.j
3.j

Answers

1) C because potential energy is always at the top first and has to most energy to speed down more.
2)A because potential energy is always at the top first
3)B because kinetic energy is when it starts to drop; so the perfect word for that is moving.

Need answer ASAP!!

Which of the following elements has the greatest atomic radius? *

A) Mg
B) Sr
C) Ca
D) Ba

Answers

D) ba is the correct answer

i really need help please will give brainliest

Answers

Answer:

Astatine is a halogen, Nitrogen is a nonmetal, Krypton is a Nobel gas, Chlorine is a halogen and Sulfur is non metal

Explanation:

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Which of the following atoms has the largest radius?
a. lithium
b. lead
C. cesium
d. fluorine
e. carbon

Answers

Explanation:

first one, a. lithium. it's the largest

12. Which neutral atom would most likely form an ion with a 3- charge?

Answers

Answer:

phosphorus

Explanation:

it reacts by gaining three electrons in its outermost shell to be stable

The rate of a chemical reaction is NOT affected by which of the following:
A.temperature
B.particle size (surface area)
C.concentration
D.All of these affect reaction rates

Answers

Answer:

Option B

Explanation:

Option (B) Particle size

why should scientists perform expierements

Answers

Answer:

Experiments are most useful when investigating predictions derived from explicit theories, and it is theories, rather than experimental results, that are properly used to explain features of natural settings.

Answer:

to explore new possibilities

hope it helps

Waves often bounce off objects such as water. What is this form of wave movement called?
A.
reflection
B.
refraction
C.
interference
D.
resonance

Answers

Answer:

Reflection

Explanation:

Reflection is when something is bounced off something else such as light bouncing off objects therefore the waves are reflecting. Also when light bounces off of a surface it reflects rather than refraction which refers to the light bending as it enters a new medium

A long thin sample of a substance is easily bent. When the substance is placed in a n electric circuit and the switch is closed, and LED light turns on. What type of bonding holds the particles of the substance together?

Answers

Answer:

A metallic bonding holds the particles of the substance together

Explanation:

The unknown substance is a metal:

It is easily bent: This means it is ductile, as it is the case with a thin metallic metallic wire."When the substance is placed in a n electric circuit and the switch is closed, and LED light turns on." This means it easily conducts electricity. Metals are good conductors.

When a candle burns, the reaction produces:
• oxygen and water
• carbon dioxide and wax
• wax and oxygen
• carbon dioxide and water vapor

Answers

Answer:

B

Explanation:

Hope this helps you

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