Classify the chemical equations as being balanced or not balanced.
2CO + 2NO → 2CO2 + N2

6CO2 + 6H2O → C6H12O6 + O2
H2CO3 → H2O + CO2
2Cu + O2 → CuO

P2 = 40 atm

Explanation:

Given:

P1 = 2 atm

V1 = 1200 L

V2 = 60 L

P2 = ?

Using Boyle's law and solving for P2,

P1V1 = P2V2

P2 = (V1/V2)P1

= (1200 L/60 L)(2 atm)

= 40 atm

Reaction 1 :-

Reaction 2 :-

Answer:

No element shares the same atomic number. The atomic number of every element is unique to itself, just like a fingerprint is unique to a human. The atomic number of element allows us to identify it, like how we can identify a person from their fingerprint.

Explanation:

I think the answer is organelles.

Answer:

well we do need up to explain the neergyu field on the world you probaly think im spamming but i thing you need up

Explanation:

Answer:

bio mass is renewable

natural gas non renewable geothermal energy renewable

Explanation:

biomass is by palnts and animals geothermals is unlimeted because its made out of the earths core

Answer:

the answer is c carbon dioxide and water

Answer:

1.62 * 10^-11 J

Explanation:

Nitrogen-14 nucleus has seven neutrons and seven protons. So;

Total mass of protons = 7(1.00728 amu)

Total mass of neutrons = 7(1.00866 amu)

Total mass of nucleons = 7(1.00728 amu) + 7(1.00866 amu)= 14.11158 amu

Mass of Nitrogen-14 nucleus = 14.00307 amu

Mass defect = 14.11158 amu - 14.00307 amu = 0.10851 amu = 1.801852171 * 10^-28 Kg

Binding energy = Δmc^2

Where;

Δm = mass defect

c = speed of light

Binding energy = 1.801852171 * 10^-28 Kg * (3 * 10^8)^2

Binding energy = 1.62 * 10^-11 J

Answer:

0.10851 amu

1.62

-11

Explanation:

Yw

Answer:

Hello There!!

Explanation:

I believe the answer is O They form compounds with very bright colors.

hope this helps,have a great day!!

~Pinky~

The statement about noble gases that is correct is D. They form compounds with very bright colors.

Noble gases simply refers to the elements that have similar properties. Noble gases are colorless, odorless, and have very low reactivity.

Examples of noble gases are helium, argon, Krypton, xenon, etc. Noble gases also form compounds with very bright colors.

In conclusion, the correct option is D.

Read related link on:

https://brainly.com/question/24070118

Answer:

Q = 16163.88 Joules

Explanation:

Given the following data;

Initial temperature, T1 = -25°C

Final temperature, T2 = 150°C

Mass = 45.5 g

Specific heat capacity of ice = 2.03 J/g°C

To find the quantity of heat required;

Heat capacity is given by the formula;

[tex] Q = mcdt[/tex]

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

dt represents the change in temperature.

dt = T2 - T1

dt = 150 - (-25)

dt = 150 + 25

dt = 175°C

Substituting into the formula, we have;

[tex] Q = 45.5 * 2.03 * 175 [/tex]

Q = 16163.88 Joules

4a. D - The last number in the configuration represents the group, in this case 3, and the number of shells represent the period, which is also 3.

4bi. Rubidium metal reacts very rapidly with water to form a colourless solution of rubidium hydroxide (RbOH) and hydrogen gas (H2). The resulting solution is basic because of the dissolved hydroxide. The reaction is very exothermic and explosive.

4bii. Lithium is smaller in size than potassium . so valence electrons are more tightly held in Li than K. Due to larger size of K the valence electrons are loosely held and easy to remove the electron from K. Hence K is more reactive.

Answer:

1.250 M

Explanation:

M = moles of solute/liters of solution

1. Find number of moles - 14.61 g/58.44 = 0.2500 mol

2. Convert mL to liters - 200.0 mL/1000 = 0.2 liters

3. Divide moles by liters - 0.2500 mol/0.2 liters = 1.2500

4. Round to correct sig fig number - 1.2500 --> 1.250 M

Answer:

C. Solute

Explanation:

[tex] \huge{ \mathrm{Answer࿐}}[/tex]

The substance that is dissolved in another substance is known as Solute.

correct option

[tex] \huge\boxed{\mapsto c}[/tex]

[tex]\#TeeNForeveR[/tex]

Answer:

2.122×10^25atoms

Explanation:

number of moles=mass/molar mass

7.05moles= mass of pyridine/79

reacting mass of pyridine=556.95

C5H5N= (12×5)+(5)+(14)=79

C5=60

to find the mass of carbon in 556.95g of pyridine we take the stoichometric ratio

60[C5] -----> 79[C5H5N]

x[C5] --------> 556.95g[C5H5N]

cross multiply

x=(60×556.95)/79

x=423g of carbon

moles=mass/molar mass

moles of carbon=423/12

moles=35.25moles of carbon

moles=number of particles/Avogadro's constant

35.25=number of particles/6.02×10^23

number of particles=2.122×10^25atoms of carbon

The number of carbon atoms present in the 7.05 moles of pyridine is equal to 2.12 ×10²⁵. Therefore, option (D) is correct.

Avogadro’s number can be useful to express the number of particles in 1 mole of a chemical substance. Generally, these particles can be ions, atoms, molecules, electrons, or protons, according to the type of chemical reaction.

Avogadro’s constant is experimentally found approximately equal to 6.022 × 10²³ per mole.

Given, the number of moles of the Pyridine =  7.05 mol

The molar mass of the C₅H₅N = 79 g/mol

On molecule of pyridine has carbon atoms = 5

One mole of pyridine has carbon atoms = 5 × 6.022 × 10²³

Then 7.05 moles of  pyridine have carbon atoms = 7.05 ×5 × 6.022 × 10²³

                                                                             = 2.12 ×10²⁵ carbon atoms

Therefore, 2.12 ×10²⁵ carbons are present in 7.05 moles of pyridine.

Learn more about Avogadro's number, here:

brainly.com/question/11907018

#SPJ2

Answer:

Is this the full question?

Answer:

Answer a is the best way for gas b

Answer:

I think the answer is, 100.

Explanation:

but i dont know try

Answer:

false

Explanation:

Because these examples are able to turn back into their original form. For example, melted ice can refreeze.

Answer:Chemical energies,elastic energy,kinetic energy,Light energy :)

Explanation:

Answer:

a. 4Cu + O₂ → 2Cu₂O

b. 266g Cu

c. 102g Cu₂O

Explanation:

Based on the balanced reaction:

a. 4Cu + O₂ → 2Cu₂O

4 moles of Cu reacts per mole of oxygen to produce 2 moles of Cu₂O.

b. To solve this question we need to find the moles of Cu₂O. With these moles and the balanced reaction we can find the moles of Cu and its mass:

Moles Cu₂O -Molar mass: 143.09g/mol-

300g Cu₂O * (1mol / 143.09g) = 2.097 moles Cu₂O

Moles Cu:

2.097 moles Cu₂O * (4mol Cu / 2mol Cu₂O) 4.193 moles Cu

Mass Cu - Molar mass: 63.546g/mol-

4.193 moles Cu * (63.546g / mol) = 266g Cu

c. In the same way, using PV = nRT we can find the moles of Oxygen. With the moles of oxygen we can find the moles of Cu₂O and its mass:

n = PV / RT

P = 1atm at STP, V = 8.0L, R = 0.082atmL/molK, T = 273.15K at STP:

n = 1atm*8.0L / 0.082atmL/molK*273.15K

n = 0.357 moles O₂

Moles Cu₂O:

0.357 moles O₂ * (2mol Cu₂O / 1mol O₂) = 0.714 moles Cu₂O

Mass Cu₂O -Molar mass: 143.09g/mol-

0.714 moles Cu₂O * (143.09g/mol) =

102g Cu₂O

Answer:

Explanation:

BIG OL BEAN

Answer:

While organic chemistry is defined as the study of carbon-containing compounds and inorganic chemistry is the study of the remaining subset of compounds other than organic compounds, there is overlap between the two fields (such as organometallic compounds, which usually contain a metal or metalloid bonded directly to carbon).

thenks and mark me brainliestt :)) pls

Answer:

The answer is D

The last one

Answer:

The new volume of the gas is 276.45 mL.

Explanation:

Charles's law indicates that for a given sum of gas at constant pressure, as the temperature increases, the volume of the gas increases, and as the temperature decreases, the volume of the gas decreases.

Charles's law is a law that mathematically says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

[tex]\frac{V}{T} =k[/tex]

Analyzing an initial state 1 and a final state 2, it is satisfied:

[tex]\frac{V1}{T1} =\frac{V2}{T2}[/tex]

In this case:

Replacing:

[tex]\frac{250 mL}{293 K} =\frac{V2}{324 K}[/tex]

Solving:

[tex]V2=324 K*\frac{250 mL}{293 K}[/tex]

V2= 276.45 mL

The new volume of the gas is 276.45 mL.

Answer:

sodium +chloride +oxygen=sodium cloride oxygen