Please help me with this homework

Please Help Me With This Homework

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Answer 1
sorry can’t answer but make sure to report links

Related Questions

two chemical test that can be used to differentiate propanol from propanoic acid​

Answers

Propanal will form silver mirror upon heating with Tollen's reagent while propanoic acid will not respond.

The balanced chemical equation below represents the formation of magnesium chloride.

Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g)

At STP, what is the total number of liters of hydrogen gas produced when 3.00 moles of hydrochloric acid solution-HCl(aq) is completely consumed?
A.22.4 L

B.11.2 L

C.33.6 L

D.44.8

Answers

Answer:

C. 33.6L

Explanation:

Based on the reaction, 2 moles of HCl reacts producing 1 mole of hydrogen.

To solve this question we must find the moles of hydrogen produced using the reaction. Then, with combined gas law (PV = nRT) we can find the volume produced:

Moles H2:

3.00 moles HCl * (1mol H2 / 2mol HCl) = 1.50 moles H2 are produced

Volume:

PV = nRT

V = nRT / P

Where P is pressure = 1atm at STP

V is volume = Our incognite

n are moles of the gas = 1.50 moles

R is gas constant = 0.082atmL/molK

T is absolute temperature = 273.15K

V = nRT / P

V = 1.50mol*0.082atmL/molK*273.15K / 1atm

V = 33.6L

C. 33.6L

Determine the molar mass of :

1. H20
2. Co2
3.NaCl

Answers

Answer:

1 is the chemical formula for water, meaning that each of its molecules contains one oxygen and two hydrogen atoms.

2 a colorless, odorless gas produced by burning carbon and organic compounds and by respiration. It is naturally present in air (about 0.03 percent) and is absorbed by plants in photosynthesis.

3 Chemical abbreviation for sodium chloride (table salt)

In the compound AbO3, the ratio of aluminum to
oxygen is
A) 3 moles of aluminum to 2 moles of oxygen
B) 2 moles of aluminum to 3 moles of oxygen
C) 2 grams of aluminum to 3 grams of oxygen
D) 3 grams of aluminum to 2 grams of oxygen

Answers

Answer:

c

Explanation:i got it right ony my test

What is to dissolve? ​

Answers

Answer:

(with reference to a solid) become or cause to become incorporated into a liquid so as to form a solution.

To become incorporated into a liquid in the case of solids like ice, salt or to annul a marriage

-Define what petroleum is, explain how it forms, and
what it is used for today.
-Define what natural gas is, explain how it forms, and
what it is used for today.

Answers

Answer:

Petroleum, also called crude oil, is a fossil fuel.

petroleum was formed from the remains of ancient marine organisms, such as plants, algae, and bacteria

Petroleum products include transportation fuels, fuel oils for heating and electricity generation, asphalt and road oil, and feedstocks for making the chemicals, plastics, and synthetic materials that are in nearly everything we use

5. Which of the following materials
evaporates most quickly?
O MEK
O methanol
acetone

Answers

Answer: acetone

Explanation: Acetone has the weakest intermolecular forces, so it evaporated most quickly. Water had the strongest intermolecular forces and evaporated most slowly.

If the speed of a wave is 150 m/s and its frequency is 2 Hz, what is its wavelength?

A. 300m
B. 75m
C. 152m
D. 148m

Answers

Answer:

75m

Explanation:

Which of the following shows that the combustion of methane produces 802
kJ/mol of energy?
A. CH4(9) +202(g) + 802 kJ/mol + CO2(g) + 2H2O(g)
B. CH4(9) +202(g) → CO2(g) + 2H2O(g) - 802 kJ/mol
C. CH4(9) + 202(g) → CO2(g) + 2H2O(g) + 802 kJ/mol
802kJ
O D. CH4(9) +202(9)
CO2(g) + 2H2O(g)
SUBMIT

Answers

Answer: hewo, there! your answer is Below

CH4(g) + 2O2(g) CO2(g) + 2H2O(g) + 802 kJ/mol

Explanation:

Hope this helps!!!

Have a great day!!!

The reaction [tex]CH_{4} (g)+2O_{2}[/tex] → [tex]CO_{2}(g) +2H2_{O} (g)+802kJ/mol[/tex]

shows combustion reaction of methane in which energy 802 KJ/mol energy produces.

What is combustion reaction?

A combustion reaction occurs when a substance combines with oxygen gas and produces energy in the form of light and heat. One of the reactants in combustion reactions must be oxygen. Water vapor is produced when hydrogen gas is burned.

It can be seen that this reaction give carbon di-oxide and water hence, combustion reaction will show this reaction.

[tex]CH_{4} (g)+2O_{2}[/tex] → [tex]CO_{2}(g) +2H2_{O} (g)+802kJ/mol[/tex]

the correct answer will be option (c).

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what is aqua regia solution ?​

Answers

Answer:

Aqua regia is a corrosive, fuming yellow solution that is a 1:3 mixture of concentrated nitric and hydrochloric acids.

AnSwEr:-

Aqua regia is a mixture of hydrochloric acid (HCl) and nitric acid (HNO3) at a ratio of either 3:1 or 4:1. It is a reddish-orange or yellowish-orange fuming liquid. The term is a Latin phrase, meaning "king's water". The name reflects the ability of aqua regia to dissolve the noble metals gold, platinum, and palladium.

When ethylene glycol (an antifreeze) is added to water,
the boiling point of the water
A) decreases, and the freezing point decreases
B) decreases, and the freezing point increases
C) increases, and the freezing point decreases
D) increases, and the freezing point increases

Answers

Explanation:

the answer is D they both increase

When ethylene glycol (an antifreeze) is added to water, the boiling point of the water increases, and the freezing point decreases.

What is antifreezer?

Antifreezers are the substance which on mixes with any other compound will decreases the freezing point of that compound.

When we add ethylene glycol which is an antifreeze substance in the water then depression in freezing point takes place but at the same time elevation in boiling point also happen, because they had a great attraction force within themselves.

Decresing in boiling point and freezing point is wrong.Decreasing in boiling point and increasing in freezing point is also wrong.Increasing in boiling point and freezing point is also not possible.

Hence increasing in boiling point and decreasing in freezing point takes place.

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plz help its due today!!!

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Answer:

Explanation: First one is Purple, purple, White.

Hairy, Hairy, Non hairy.

Answer:

Any dominant trait (capital letter) will dominate the recessive trait (lowercase letter)

Explanation:

Any letter combo with the dominant trait will have that dominant trait. The only time the recessive trait will come through is if it is a double lowercase letter. Ex. PP=purple flower Pp= Purple flower and pp= white flower

hiiiiii guys hope you are all doing well

Answers

Answer:

wat dose dis du

Explanation:

u to frend lit me now if yu need help with yur math and english homewirk. me got anser 2 evryting

PLEASE HELP ME ASAP

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1 mole N2/ 2 moles NH3

The system international (SI) unit for energy is:

Answers

Question

The system international (SI) unit for energy is:

Answer: joule

PLZ BRAINLIEST+THANKS :)

what do atom, molecules, and elements have in common

Answers

Answer:

Solids, liquids, gases - all matter - are made up of atoms (or other things, like molecules, that are made from atoms)! ELEMENTS are the kinds of atoms that we can have. Carbon is an element, hydrogen is an element, and so is oxygen. ... Atoms can join together - they form bonds together - to make MOLECULES.

How many mL of HCI, 0.1 M, will you need to prepare 0.700 L of HCL, 0.025 M?

Answers

Answer:

I think you mean 0.025 M and this is the answer

Explanation:

A student is shown a simple model of particles that make up a liquid, as shown
su
How should the model be changed to show the particles of a liquid at a higher temperature?
o
A. Separate the particles into positive and negative charges, and increase the space between the particles
B. Separate the particles into positive and negative charges, but maintain the same space between the particles
C Decrease the velocities of the particles, and decrease the space between the particles.
D. Increase the velocities of the particles, but maintain the same space between the particles.

Answers

E⁣⁣⁣xplanation i⁣⁣⁣s i⁣⁣⁣n a f⁣⁣⁣ile

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What are the products of the following neutralization reaction (No need to balance)
HCI + NaOH --> ??? + ???

A.)H20+NaCl
B.)HNa+CIOH
C.)H20+CINa
D.)NaH+HOCI

Answers

HCI + NaOH --> NaCl + H2O

Neutralization reaction is the reaction between acid and base which results in formation of salt and water. Here salt is NaCl (common salt) in above reaction.

SO, (A) H20 + NaCl is your answer.

2. Two glasses full of water are left out on a table over
night. Both glasses have a diameter of 10
centimeters, but one is twice as tall as the other.
Which glass do you expect to lose more liquid to
evaporation in a short amount of time?
A.The taller glass
B.The shorter glass
C.They both lose the same amount
D.No evaporation takes place

Answers

Answer: C

Explanation: The evaporation rate depends on the exposed surface of liquid as long as both glasses stay at the same temperature. Since both glasses have the same surface area, they should both evaporate at the same rate.

Glaciers contain most of the freshwater on earth. True or false! Please help me out

Answers

glaciers contain about 69% of the worlds freshwater.

Convert 3.5x1025 molecules of Co, to
moles,

Answers

Answer:

Convert 3.5x1025 molecules of Co, to

moles,

Explanation:

Your mommy buys you a helium balloon at the circus. It has a volume of 4.00 liters at STP. What mass of helium, expressed in grams, does this balloon contain?

Answers

Answer:

I believe it will still be 4.00

Explanation:

0.714g of Helium is contained in the balloon

What is STP?

STP stands for standard temperature and pressure. STP refers to a specific pressure and temperature used to report on the properties of matter.

According to IUPAC( International Union of Pure and Applied Chemistry), it is defined as -

Temperature of 0 degree celsius (273K)Pressure of 1 atm

It is generally needed to test and compare physical and chemical processes where temperature and pressure plays an important role as they keep on varying from one place to another.

One mole of a gas under STP conditions occupies a volume of 22.4L.

Given,

Volume = 4L

1 mole of a gas occupies 22.4L of volume at STP.

Thus, 1L of a gas occupies = 1 / 22.4 moles

so, 4 L will occupy = 4 / 22.4 moles

                               = 0.178 moles

Moles = mass / atomic mass

Mass =  moles × atomic mass of He

             = 0.178 × 4

              = 0.714g

Therefore, 0.714g of Helium is contained in the balloon.

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A 0.068 M solution of benzamide has a pOH of 2.91. What is the value of Kb for
this compound?

Answers

Answer:

Kb = 2.23 x 10⁻⁵

Explanation:

Benz-CO-NH₂ + H₂O => Benz-CO-NH₃⁺OH⁻ ⇄ Benz-CO-NH₃⁺ + OH⁻

given pOH = 2.91 => [OH⁻] = 10E-2.91 = 1.23 x 10⁻³M

                         Benz-CO-NH₃⁺OH⁻ ⇄ Benz-CO-NH₃⁺   +       OH⁻

At Equilibrium           0.68M                    1.23 x 10⁻³M          1.23 x 10⁻³M

Kb = [Benz-CO-NH₃⁺][OH⁻]/[ Benz-CO-NH₃⁺OH⁻]

= (1.23 x 10⁻³)² M²/ 0.068M = 2.23 x 10⁻⁵

When 2.0 g copper is heated with an excess of sulfur, copper (I) sulfide is the product. What is the mass of the copper (I) sulfide produced? (mass to mass)

Answers

Answer: Mass is 2.50 g

Explanation: reaction 2 Cu + S ⇒ Cu2S

Amount of Cu = m/M = 2.00 g /63.55 g/mol= 0.03147 mol

Amount of Cu2S = 0.5 n(Cu) = 0.01574 mol

M(Cu2S)= 159.17 g/mol, m = n·M

Compound Q decolorizes bromine water. Compound Q has two carbon atoms in each molecule. Which statement about compound Q is correct?


a) It contains carbon-hydrogen double bonds.



b) It has six hydrogen atoms per molecule.


c) It has two carbon-carbon double bonds.


d) It is produced by cracking alkanes.

Answers

C

Explanation :
Alkene decolorizes water so it has a C=C

The statement " It has two carbon-carbon double bonds" is correct. because Q is a kind of unsaturated hydrocarbon.

What is unsaturated hydrocarbon?

The type of compound which contain double bond or triple bond can be considered as unsaturated hydrocarbon. Unsaturated hydrocarbon can decolorized bromine water.

Two kinds of unsaturated hydrocarbon will obtain, alkene and alkyne.

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Positron Emission and electron capture are most different because they are.

Answers

Answer:

Opposites

Explanation:

In positron emission, a proton is converted to a neutron by emitting a positron and a neutrino. In electron capture, an outside electron is pulled inside the nucleus and combined with a proton to make a neutron, emitting only a neutrino.

if you put the wrong answer i report

Answers

Answer:

the answer is 5 degree

Explanation:

In a calorimetry lab, sodium oxide is combined with water. Compute the
heat released in the formation of 1.99 grams of sodium hydroxide. Na2O +
H2O -> 2NaOH + 215. 76 kJ

Answers

Answer:

So the total mass is 50 plus 150 grams the heat capacity 4.18 joules per gram per degree C. And the temperature change is 36 minus 25 and so we can calculate Delta H for the reaction that takes place.

Explanation:

Which are bundles of cells in the lungs that take in oxygen?
A) Alveoli
(B) bronchi
(c) nostrils
d) tranchea

Answers

Answer:

Which are bundles of cells in the lungs that take in oxygen? Alveoli.

Explanation:

Answer option A is correct. Hope you have a great day.

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