How many moles of O2 are needed to prepare 1.00 gram of Ca(NO3)2?

Ca + N2 + 3O2 → Ca(NO3)2

A) 183 moles
B) 366 moles
C) 0.00200 moles
D) 0.0183 moles

Answer:

1. c) shiny

2) True. Reactivity is a chemical property.

1. A metal is shiny

2. yes

that's all

Answer:

b

Explanation:

Answer:

It contracts and relaxes awnser is a

Explanation:

im from flvs

I think the answer is c if not then try a

Answer: B

Explanation:

Answer:

made of different kinds of tissues

Explanation:

cause that's the only one that makes sense because it goes: cell, tissues,organ,organ system , organism

1. the simplest unit of life - cell

2. a individual organ - would be made of different kinds of tissues

3. tissues - would be made of one kind of cell

4- an organ system - meets all the needs of a organism

also it wouldn't make sense for a individual organ to be made of only one kind of cell so yeah

good luck :) I hope this was right

Answer:

Explanation:

How best to demonstrate the equivalence of hydrogens in  

H 2 C = C H 2 ?

1 H NM R spectroscopy would be the best way to show this. The 4 hydrogens give the one signal.

Explanation:

Answer:

Both graduated cylinders and beakers are pieces of laboratory glassware that have a specific function. Graduated cylinders typically are more accurate at reading the volumes of the liquid inside. Beakers are better for stirring and mixing liquids.

Flasks are notable for their unique shape: a rounded vessel and a cylindrical neck. The main differing characteristic between a flask and a beaker is that beakers have straight sides, rather than slanted sides like a flask. Beakers are mainly for measuring and transporting liquids from one site to the next.

Explanation:

hope this helps!!!!

Answer: The data are consistent with the law of conservation of mass because the mass of reactants equals the mass of products

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

Given: mass of sodium = 12.8 g

mass of chlorine = 19.6 g

mass of reactants = mass of sodium + mass of chlorine = 12.8 g + 19.6 g = 32.4 g

Mass of product = Mass of sodium chloride = 32.4 g

As mass of reactant = mass of products , Thus results are in accordance with the law of conservation of mass.​

Answer:

C. seems to be the answer as ionic comlopunds have high melting points becuase of the anion cation bond which is not seen in covalent bonds that share electrons in polar arragnements.

Explanation:

Answer:

I think is B hopefully is

the answer is A.

the scientist used mud and vinegar to make a model of the volcano.

Answer:

obviously it is 6 km cause that's the longest length

Answer:

the answer is A

Explanation:

Its A because 6km is the longest and 1Km = 1000 meters

Answer:

Given mass 150 kg= 150000 gram

molar mass 71 gram

number of moles = given mass/molar mass

= 2112.76 moles

1 mole = 24 Dm³

2112.76 mole =24×2112.76= 50706.24 Dm³

The volume of the mole of gas at room temperature and pressure is 50,704.08dm³

We need to first calculate the number of moles of Chlorine gas (Cl₂)

Number of moles = Mass/Molar mass

Given the following parameters

The molar mass of Cl₂ = 71g/mol

Mass of chlorine gas = 150kg = 150,000g

Get the number of moles

[tex]n=\frac{150,000}{71}\\n=2,112.67moles\\[/tex]

Given that volume of 1 mole at STP = 24.0dm³

2112.67 moles = x

Get the volume of the chlorine gas at STP.

Volume of Cl₂ at STP = 24 × 2112.67

Volume of Cl₂ at STP = 50,704.08dm³

Hence the volume of the mole of gas at room temperature and pressure is 50,704.08dm³

Learn more here: https://brainly.com/question/3578153

6, 0

thats the answer, i hope it helps

Answer:

i am quite unsure what you want me to answer but if you explain it to me w ould live to help

Explanation:

Answer:

The Great Red Spot is a storm in Jupiter's southern hemisphere with crimson-colored clouds that spin counterclockwise at wind speeds that exceed those in any storm on Earth. The Great Red Spot has slowly changed over the years, and is currently about 1.3 times as wide as our planet.

Answer:

placental mammals

Explanation:

Answer:

B) placental mammals

Explanation:

Answer:

38.7 g

Explanation:

First we convert 27.3 grams of C₈H₁₈ into moles, using the given molar mass:

Then we convert 0.239 moles of C₈H₁₈ into moles of H₂O, using the stoichiometric coefficients of the reaction:

Finally we convert 2.151 moles of H₂O into grams, using water's molar mass:

Answer:

magma

Explanation:

i did a test on it

The hot liquid substance that is inside the Earth is referred to as magma.

If this is incorrect, please, don't refrain to tell me. Thank you.

Answer:

In a nonpolar covalent bond, the atoms share electrons equally with one another.

Explanation:

Nonpolar covalent bonds are a type of bond that occurs when two atoms share a pair of electrons with each other. These shared electrons glue two or more atoms together to form a molecule.

Answer:

c) 7.2 moles

Explanation:

7.2 moles of [tex]CO_2[/tex]  are produced during the complete combustion of 3.6 moles of [tex]C_2H_6[/tex].  Hence, option C is correct.

A mole is defined as 6.02214076 ×[tex]10^{23}[/tex]

of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

Balance your chemical reaction first.

[tex]2C_2H_6 + 7O_2[/tex] —> [tex]4CO_2 + 6H_2O[/tex]

2 moles of [tex]C_2H_6[/tex] produce 4 moles of [tex]CO_2[/tex].

So, 3.6  moles of [tex]C_2H_6[/tex]  produce= (4÷2)x3.6 =7.2 moles

Hence, 7.2 moles of [tex]CO_2[/tex]  are produced during the complete combustion of 3.6 moles of [tex]C_2H_6[/tex].

Learn more about moles here:

https://brainly.com/question/8455949

#SPJ2

Answer:

(a) Mercury

Explanation:

Mercury with chemical symbol (Hg) is also regarded as " quicksilver". It is heavy and silvery in nature and belongs to d-block of the periodic table, it is metallic element and it is liquid at standard conditions of (temperature and pressure). It has Boiling point of about 356.7 °C with Atomic number of 80. It can molten above the temperature of ( −38.8 °C)

Answer:

2.41 mol

Explanation:

53.9 L x 1 mol/22.4 L = 2.41 mol

Explanation:

Oxygen and Nitrogen. is the correct pair.

Answer:

8.334×10^-6 moles

Explanation:

a mole is 6.023×10^23

5.02×10^18 ÷ 6.023×10^23=8.33×10^-6

so there are 8.33×10^-6 moles of water in 5.02x10^18 molecules of water

The number of moles of water in which 5.02 × 10¹⁸ molecules of water is present is 8.33 × 10⁻⁶.

Moles is a unit which is used to tells about the quantity of any substance, in one moles of any substance 6.023 × 10²³ number of atoms of that substances are present.

In 1 mole of water = 6.023 × 10²³ number of molecules of water is present

So, number of 5.02 × 10¹⁸ molecules of water present in how many moles will be calculated as:
Required moles = 5.02 × 10¹⁸ / 6.023 × 10²³ = 8.33 × 10⁻⁶

Hence, required moles is 8.33 × 10⁻⁶.

To know more about moles, visit the below link:

https://brainly.com/question/15356425

Answer:

187.34 atm

Explanation:

From the question,

PV = nRT.................. Equation 1

Where P = Pressure, V = Volume, n = number of mole, R = molar gas constant, T = Temperature.

make P the subject of the equation

P = nRT/V.............. Equation 2

n = mass(m)/molar mass(m')

n = m/m'............... Equation 3

Substitute equation 3 into equation 2

P = (m/m')RT/V............ Equation 4

Given: m = 46 g, T = 25°C = (25+273) = 298 K, V = 3.00 L

Constant: m' = 2 g/mol, R = 0.082 atmL/K.mol

Substitute these values into equation 4

P = (46/2)(0.082×298)/3

P = (23×0.082×298)/3

P = 187.34 atm

Answer:

The ratio of hydrogen atoms to oxygen atoms used to make water molecules is always 2:1, no matter how many water molecules are being made.

Explanation:

Answer:

C

Explanation:

Same reason as the answer before mine, but the answer to your questionaire is C.

please refer to the attachment

Hope This Helps You ❤️

Answer:

HCI is a strong acid : HCI -> h^+  + CI^-                                                              [ H^+ ] = 1.0  x 10 ^-3  -> pH = -log[ H^+ ] = -log 10 ^-3 = 3

Explanation:

Answer:

La respuesta correcta es: Al aumentar la temperatura se dilata con facilidad

Explanation:

El mercurio (Hg) es un elemento metálico que a temperatura ambiente es un líquido. Tiene la propiedad de dilatarse con facilidad al aumentar la temperatura, propiedad que ha sido utilizada en los termómetros de mercurio. En estos termómetros, el mercurio está dentro de un tubo de vidrio graduado con un bulbo para transmitir el calor. Al estar en contacto con un cuerpo más caliente (a mayor temperatura), el mercurio del interior del termómetro se dilata (expande su volumen) y asciende por el tubo indicando la temperatura correspondiente, graduada en el vidrio.

Answer:

0.065 meters

Explanation:

Answer:

Start by dividing the length value by 1000, so that would be

65 / 1000 = 0.065 meters