Please help me with this homework

Please Help Me With This Homework

Answers

Answer 1
Answer is gas for sure and I think it’s ice for question 2

Related Questions

If there are 6 waves in a 2-second time frame, what is the frequency

Answers

Answer:

3 Hz

Explanation:

frequency = [tex]\frac{number of waves}{time}[/tex]

thus [tex]f=\frac{6}{2}[/tex] = 3 Hz

If there are 6 waves in a 2-second time frame, the frequency is 3 Hz. When a wave travels through a medium, the frequency describes how frequently the medium's particles vibrate.

What is the frequency of a wave?

The frequency identifies the frequency at which the particles of the medium vibrate as a wave passes through it.

Frequency = number of waves ÷time

The number of waves is  6 and time is 2 second

     f = 6 ÷ 2

      =  3

A disturbance or variation that causes energy to be transferred gradually from one point to another in a medium. It can be an elastic deformation or a change in pressure, electric potential, electric or magnetic intensity, or temperature.

Therefore, if there are 6 waves in a 2-second time frame, the frequency is 3 Hz.

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dlaczego emaliowane garnki rdzewieją w miejscach uszkodzenia emalii​

Answers

Answer:

Explanation: I don’t even know what you said

Answer:

so basically

Explanation:

bsuxnssu hhusnn ji

Is a animal searching for water a stimulus or response

Answers

Answer:

response I believe

Explanation:

i'm pretty sure it's a response cause it's the animal responding to needing water and being thirsty

hope this helps! :)

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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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 the empirical formula for a compound that has 31.2% calcium, 18.8% carbon,
and 50% oxygen

Answers

Answer:

CaC2O4

Explanation:

If .45 moles of water vapor is produced in a chemical reaction that occurs at STP how many liters of water are produxed

Answers

Answer:

10.1 L

Explanation:

At STP (meaning T = 273 K and P = 1 atm) one mol of any given gas will occupy 22.4 liters.

With the above information in mind, we can calculate how many liters will 0.45 moles of water vapor occupy:

0.45 mol * 22.4 L / mol = 10.1 L

Meaning that if 0.45 moles of water are produced at STP, 10.1 liters of water would be produced.

How do stars, like the sun, produce energy?

• Answers MUST include:

○ how the energy is produced AND the kinds of energy produced.

Answers

Answer:

The sun, like all stars, is able to create energy because it is essentially a massive fusion reaction. Technically known as nuclear fusion, this process releases an incredible amount of energy in the form of light and heat.

Types of energy produced: Stars produce energy from nuclear reactions, primarily the fusion of hydrogen to form helium.

Explanation:

hope this helped :D

During _____________ there are 24 hours of daylight at the North Pole.

summer
winter
spring

Answers

Answer:

summer

The North Pole stays in full sunlight all day long throughout the entire summer (unless there are clouds)

Answer:

summer

Explanation:

hope this helps :)

13. "The business of America is business.” — President Calvin Coolidge.
By making this statement, President Coolidge was expressing his support for
a. higher taxes on corporations.
b. banking regulations.
c. democratic socialism.
d. laissez-faire capitalism.

Answers

Answer:

Answer is

A higher taxes on corporations

I hope you like it

What was the lowest extent of sea ice in the data, and when did it occur?

Answers

Answer:5 1/2. occurred the other day i think

Explanation:

Explain more pls I’m confused

How many grams of aluminum are necessary to produce 11 L of hydrogen gas at STP??
PLEASE HELP

Answers

9.0 grams will produce 11 L of hydrogen

Answer:

8.8

Explanation:

You can view more details on each measurement unit: molecular weight of Aluminum or grams The molecular formula for Aluminum is Al. The SI base unit for the amount of substance is the mole. 1 mole is equal to 1 mole of Aluminum.

Which is an essential characteristic of any mineral? A.Liquid B. Artificially manufactured C. Crystal structure D. Formed from organic processes

Answers

Answer:

Crystal structure

Explanation:

This is because minerals are organic or inorganic substances found naturally on the Earth and there are ordered substances at with atomic or molecular level. They are solid at normal Temperature. They have defined chemical composition and also have crystal structures.

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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The system international (SI) unit for energy is:

Answers

Question

The system international (SI) unit for energy is:

Answer: joule

PLZ BRAINLIEST+THANKS :)

5. Organisms that make their own energy storage molecules are called producers. What process do
they go through to create these molecules?

Answers

Answer:

I think it's metabolism

Hope this helps

I WILL Give BRAINLIST Unlike protists, organisms in the group Animalia
A
have cells with no cell wall and have an organ system.
B
have cells with a cell wall and are heterotrophic.
C
are complex and photosynthetic.
D
are all mobile and autotrophic.

Answers

Answer:

B

Explanation:

B

have cells with a cell wall and are heterotrophic

85 grams of CO2 to molecules

Answers

Answer:

co2 = 44,01 g/mol

85\44= 1,93 mol

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.

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.

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.

-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

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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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:

When a stalactite is formed by water leaving mineral deposits from the ceiling of a cave, this is caused by_____
A:Erosion
B: deposition

Answers

Stalactites are formed by deposition as minerals are deposited to form them.

Answer:

it is b

Explanation: As the carbon dioxide is released, calcite is precipitated or redeposited on cave walls, ceilings and floors. As the redeposited minerals build up after countless water drops, a stalactite is formed.

Which of the following is likely to be affected by a growing human population?

Question 5 options:

Amount of land for farming


Amount of air pollution


Amount of clean water


All of the above


None of the above

Answers

Answer:

D.) All of the above

is the correct answer

By a growing human population, amount of land for farming, amount of air pollution and clean water is likely to be affected.

What is population?

Population tells about the relative numbers of people present in particular area.

When there is a increase in the population of people then there is decrease in the amount of land for farming because more people want more land and this results in lack of land for individual. The affect of increased population results in the increase of air pollution, noise pollution, land pollution as well as water pollution.

Hence, option (d) is correct i.e. all of the above.

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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

what is an electromagnetic wave PLEASE ILL GIVE 15 POINTS AND BRAINLESt

Answers

[tex]An \:  electromagnetic \: wave can \: travel \: through \: anything \:[/tex]

[tex] - be \: it \: air, \: a \: solid \: material \: or \: vacuum. [/tex]

[tex] It \: does \: not \: need \: a \: medium \: to \: propagate \: [/tex]

[tex]or \: travel \: from \: one \: place \: to \: another[/tex]

An electromagnetic wave can travel through anything - be it air, a solid material or vacuum. It does not need a medium to propagate or travel from one place to another

if it helps don't forget to like and mark me

Convert 3.5x1025 molecules of Co, to
moles,

Answers

Answer:

Convert 3.5x1025 molecules of Co, to

moles,

Explanation:

plz help its due today!!!

Answers

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

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