What is white light made up of?
A. infrared light
B. ultraviolet light
C. seven colors of the rainbow

Answer:

a po

Explanation:

promise HAHAHAHHAHAHAH

Answer:

isotopes

Explanation:

trust me

Answer: Aufbau series.

Explanation:

Answer:

the formula is M = m/n

Explanation:

M = m/n is the molar mass equals the mass of the substance divided by the number of moles of a substance

Answer:

100.93 g/mol

Explantion:

Answer:

It's made of salt

Explanation:

The recipe has salt as an ingredient

Answer:

playdoh is literally made of salt. thats why it tastes salty

Explanation:

Answer:

9.34 g Ag

Explanation:

Answer:

um

Explanation:

help you? you mean do it for you? nah man you can just use the calculator ;)

0.34 mol S

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

11 g S

Step 2: Identify Conversions

[PT] Molar Mass of S - 32.07 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

0.343 mol S ≈ 0.34 mol S

Answer: a) Temperature of [tex]170^0C[/tex]

b) [tex]C_2H_5OH\stackrel{conc H_2SO_4, 170^0C}\rightarrow C_2H_4+H_2O[/tex]

c) dehydrating agent

Explanation:

Ethanol is heated with an excess of concentrated sulfuric acid at a temperature of 170°C to produce ethene.

The balanced chemical reaction is:

[tex]C_2H_5OH\stackrel{conc H_2SO_4, 170^0C}\rightarrow C_2H_4+H_2O[/tex]

Here concentrated sulfuric acid removes a water molecule from ethanol and thus acts as a dehydrating agent.

Answer:

14.85L of water are produced

Explanation:

Based on Avigadro's law, the volume is directly proportional to the moles of a gas.

Based on the equation:

2C₂H₆(g) + 7O₂(g) → 4CO₂(g) + 6H₂O(g)

2 moles of ethane produce 6 moles of H₂O.

Using Avogadro's law: 2L of ethane produce 6L of H₂O.

The addition of 4.95L of ethane are:

4.95L ethane * (6L H₂O / 2L C₂H₆) =

Explanation:

Due to the positive value of the change in temperature, this is an endothermic reaction.

Since the forward reaction is endothermic, increasing the temperature increases the equilibrium constant (k).

In an equilibrium system, the position of the equilibrium will move in a way to annul the change made to the system. An increase in temperature for an endothermic reaction would favour the reaction, leading to increase in amount of products and decrease in amount of reactants.

Answer:

2385.49 grams of cobalt.

Explanation:

1. Convert 40.48 moles of Co (cobalt) into grams (mass):

The molar mass of cobalt is 58.933195 g/mol.

[tex]40.48 mol Co = \frac{58.93 g/mol}{1 mol Co} = 2385.49 g[/tex]

Answer:

A. Natural Gas is a substance that is a source of hydrocarbons.

Explanation:

Answer:

option A . hope it helps , thanks

Choose the products that complete the reaction. The chemical equation may not be balanced.

NaHCO3 + HC2H3O2

Answer: NaC2H3O2 + CO2 + H2O

Answer:

24

Explanation:

In an uncharged atom, the number of protons is always equal to the number of electrons. For example, carbon atoms include six protons and six electrons, so carbon's atomic number is 6.

Similarly, since an atom of chromium contains 24 protons, it also contains the same amount of electrons, which is 24.

Answer:

24 is your answer

Explanation:

Answer:

It will be : (in simple terms)

Condensation of hot steam or hot vapor on the cooler skin releases the water's latent heat of vaporization, rapidly raising the temperature of the skin which will result in steam burns.

Hope it helped

All the best!!

Answer:

Cl-

Explanation:

The equation of the reaction is;

H+(aq)+Cl-(aq)+H2O(l)→H3O+(aq)+Cl-(aq)

Lewis base refers to substances that can donate a lone pair of electrons(e.g OH^-, Cl^- etc) or a pair of nonbonding electrons.(eg NH3, H20 etc). A Lewis base is therefore an electron-pair donor. They are easily recognized because they often have lone pairs or are negatively charged species.

If we look at the products, Cl- is a Lewis base because it is a lone pair donor. We see this more clearly because the specie is negatively charged.

Answer:

Cl

Explanation:

Answer:

The combined gas law states that the pressure of a gas is inversely related to the volume and directly related to the temperature. If temperature is held constant, the equation is reduced to Boyle's law. Therefore, if you decrease the pressure of a fixed amount of gas, its volume will increase.

Explanation:

Answer:

D. The volume increases.

Explanation:

100%

Answer:

A2B

Explanation:

A = 3

B = 6

exchange valencies

A6B3

A2B

Answer:

it is D

Explanation:

because it is a substance that participants in a chemical reaction.

Answer:

EF = CH₂

Explanation:

The empirical formula of any compound would be the most simplified and simple chemical formula of a compound. To get this number, we need to get the data of how many moles of each atom of the compoud we have.

Analyzing the data, we just know that an unknown compound undergoes a combustion reaction and produces CO₂ and H₂O. As the compound only have Carbon and hydrogen, it's pretty easy to get the moles of each atom.

To get the moles of CO₂, we need the molar mass of CO₂, which is 44 g/mol, then the moles:

nCO₂ = 2.28 / 44 = 0.0518 moles of CO₂.

Now that we have the moles of CO₂, we can get the moles of Carbon. Since 1 mole of CO₂ is made of 1 mole of Carbon and 2 moles of oxygen, this means that we have 0.0518 moles of C.

Applying the same thing with the water, we have:

nH₂O = 0.702 / 18 = 0.039 moles of water

And 1 mole of water is made of 1 mole of oxygen and two moles of hydrogens, then the moles of Hydrogen are 0.078 moles.

With these moles, we can now calculate the empirical formula.

C = 0.0518 / 0.0518 = 1

H = 0.078 / 0.0518 = 1.51 ≅ 2

Now these two numbers, give us the number of atoms, in the empirical formula so:

Of course there is no compound that have only those number of atom, but remember that this is the empirical formula, so, it's a simplified or reduced formula of the molecular formula, which means that the real or whole molecular formula could have more atoms of C and H, but to know this, we need the molar weight of this compound, and the problem does not give this data.

Hope this helps

Answer:

Polymerisation is the chemical process of monomers joining together to form polymers, often it takes many thousands of monomers to make a single polymer.

Explanation:

Answer: Thus 44 g of [tex]CO_2[/tex] will be produced  if 30 g of [tex]C_6H_{12}O_6[/tex] were reacted with an excess of oxygen

Explanation:

To calculate the moles :

[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]    

[tex]\text{Moles of} C_6H_{12}O_6 =\frac{30g}{180g/mol}=0.17moles[/tex]

The balanced chemical equation is:  

[tex]C_6H_{12}O_6 +6O_2(g)\rightarrow 6CO_2+6H_2O(g)[/tex]

As [tex]C_6H_{12}O_6[/tex] is the limiting reagent as it limits the formation of product and [tex]O_2[/tex] is the excess reagent.

According to stoichiometry :

1 mole of [tex]C_6H_{12}O_6[/tex] produce =  6 moles of [tex]CO_2[/tex]

Thus 0.17 moles of [tex]C_6H_{12}O_6[/tex] will produce=[tex]\frac{6}{1}\times 0.17=1.0mole[/tex]  of [tex]CO_2[/tex]

 Mass of [tex]CO_2=moles\times {\text {Molar mass}}=1.0moles\times 44g/mol=44g[/tex]

Thus 44 g of [tex]CO_2[/tex] will be produced  if 30 g of [tex]C_6H_{12}O_6[/tex] were reacted with an excess of oxygen.

Answer:

1. false

2. true

3.true

4.true

Explanation:

Answer:

1. True

2. True

3. True

4. True

5. True

HOPE THIS HELPS

Answer:

47

Ag

Silver

107.87

Explanation:

Answer:

The third one

Explanation:

Nickel-62 has the highest binding energy per nucleon of any isotope for any element. Isotopes heavier than 62Ni cannot be formed by nuclear fusion without losing energy.

Answer:

C) Lipids and Carbohydrates

Explanation:

Lipids, or fats, are stored long-term for energy when an organism cannot find carbohydrates (specifically glucose), which are used as short-term energy.

Answer:

C-The principal because he or she controls all the activity in the school