Chemistry High School

Someone pls help me I will make you brain

Answers

Answer 1

Answer:

Lung function decreses at a faster rate for young people (last answer choice)

Explanation:

Related Questions

which word best describes a substance where its atoms and molecules are moving very fast?

Answers

Answer:

solids

Explanation:

because in ice for instance the molecules and atoms are shivering so the move fast to stay warm

What type of rock is in the reference image? How do you know?

Answers

Answer:

i think it's a sedimentary rock...

reason:- these are the only rocks containing fossils

Explanation:

brainliest plz

aluminum can be used to make soft drink cans because of which property?
A. It can be hammered into a thin sheet (malleability)
B.it can reflect light (shininess)
C.It can be drawn into long wires(ductility)

Answers

Answer:

Explanation:

Malleability describes the property of a metal's ability to be distorted below compression. It is a physical property of metals by which they can be hammered, shaped and rolled into a very thin sheet without rupturing. A soda can's walls are very thin, and therefore express the malleability of aluminum.

negative ions form when atoms _______ valence electrons.

Answers

Answer:

Negatively charged ions are called anions, and an anion is formed when an atom gains an electron. Thus, the atom has an extra charge of electrons,

Explanation:

so it becomes negatively charged.

Negative ions (or anions) are atoms that have gained electrons.

Electrons have a negative charge so if an atom is getting more of them, it's becoming more negative.

what is the purpose of an auxiliary complexing agent?

Answers

Answer:

prevent hydroxide formation

Explanation:

if you are positive on the answer please help - can you see the horsehead nebula from earth - no links pls !!

Answers

Answer:

You can but because it is almost 1500 lightyears away it appears blurry and somewhat hard to find. So the answer to your question is yes but not with the naked eye. You need a telescope lens to see it as more than a blurry spot in the sky.

Explanation:

The period of the vibrating string is 0.004 seconds. What is the frequency of the
standing wave?

Answers

Answer:4

Explanation:

Select the correct answer.
Which is true with respect to the kinetic energy of a molecule?
ОА.
it is the lowest at low temperatures
OB.
it increases at low temperatures
Oc it is the same at all temperatures
OD. it is the lowest at high temperatures

Answers

Answer is A. It is the lowest at low temperature

The atomic number equals blank of blank electrons

Answers

Answer:

The atomic number equals number of protons and electrons

This is true when an atom is in neutral state.

What is the range of valence electrons that metals have?

Answers

Metals have 1-3 electrons

Use the following image to answer the following questions. A student was performing an experiment using two identical cups made of styrofoam. The student had Cup A holding water at 90℃ and Cup B holding water at 20℃. The student then put an Aluminum Bar into each cup that was touching the water. As time passed, the student noticed that the temperature of the water in Cup A and Cup B began to change. Question:
A. Predict what will happen to the temperature of the water in Cup A and Cup B after 1 hour has passed.
B. Explain and give evidence for what type of heat transfer is occurring between the 2 cups.

Whoever answers my question gets brainliest

Answers

Answer:

The water will eventually become the same temature (A)

Which is the Lewis structure for H3PO4?
::
i
H-Ö
0-H
ö
öz-ö-1
H
I
H
H-0–H
ô–P 6

Answers

Answer:

C. H:C:H:H

Explanation:

Follow these simple steps to correctly draw a Lewis dot structure: Add up the total number of valence electrons found in the entire compound. Draw the simple structure (skeleton structure) of the compound by connecting everything with single bonds only. Add electrons to all the noncentral atoms. Put any unused electrons on the central atom.

what type of reaction mechanism is operative in the conversion of 2-methyl-2-butanol into 2-chloro-2-methylbutane?

Answers

Answer:

Below

Explanation:

The reaction is a Substitution SN1 mechanism

6. Potential energy can be
transformed into kinetic energy
of force is applied to the object.
True or false?

Answers

Answer:

true

Explanation:

because there is love in the universe and we converse in each others mind soul brain time stone

Stems have all of these functions EXCEPT
a storing food and water
b. absorbing soil nutrients
C. supporting the plant
d. moving materials between leaves and roots

Answers

Answer:

B or A

Explanation:

choose wether A or B... give it a higher level of thinking. and good luck!

Answer:

Its b!

Explanation:

its just common sense at this point lol.

Which material is a heterogeneous mixture?
O A. A brass coin
B. Tap water
C. Vinegar
D. Soil

Answers

Answer:

Explanation:

Heterogeneous mixture is a mixture of non-uniform composition & in which the components can be easily identified

Answer:

Soil

Explanation:

Soil is made up of many things (therefore it's not pure) and does not appear to be uniform; it does not look the same throughout. Therefore it is heterogeneous.

How do animals and plants rely on each other in the prairie? ITS TIMED

There are many decomposers in the prairie that can be used as food sources for first-order consumers.
There is more sunlight in the prairie for plants to grow, and therefore more food sources for animals.
Second-order consumers eat the grass as their food source.
The grass in the prairie provides oxygen, while animals give off carbon dioxide gas.

Answers

Answer:

I would assume its the last one "The grass in the prairie provides oxygen, while animals give off carbon dioxide gas."

Explanation:

The question asks how the animals and plants rely on each other

The plants provide oxygen and food for the animals, and the animals provide carbon dioxide to them.

Hope this helps :D

A student wants to calculate the heat gained of 100 grams of water in order to
calculate the specific heat of a metal in the following problem. The water is
heated from 25C to 50C when the metal is added. The specific heat of water is
4.18 J/gºC. Use Q=m xCxT*

Answers

The quantity of heat gained to raise the temperature from 25.0°C to 50.0°C is 10,450 Joules.

Given the following data:

Mass of water = 100 gramsInitial temperature = 25.0°CFinal temperature of water = 50.0°CSpecific heat capacity of water = 4.18 J/g°C

To find the quantity of heat gained:

Mathematically, heat capacity or quantity of heat is given by the formula;

[tex]Q = mc\theta[/tex]

Where:

Q represents the heat capacity or quantity of heat.m represents the mass of an object.c represents the specific heat capacity.∅ represents the change in temperature.

Substituting the values into the formula, we have:

[tex]Q = 100(4.18)(50 - 25)\\\\Q = 418(25)[/tex]

Quantity of heat = 10,450 Joules.

Read more: https://brainly.com/question/188778

Balance equations practice

Answers

Answer:

1 - B) 2 - B) 3 - A)

Explanation:

1. C3H8 + 5O2 → 3CO2 + xH2O.. Find 'X'.

A) 3

B) 4

C) 5

D) 6

2. 4Al + 3O2 → xAl2O3. Find 'X'

A) 3

B) 2

C) 4

D) 5

3. FeCl3 + 3NaOH → Fe(OH)3 + xNACl. Find 'x'

A)3

B) 4

C)5

D)6

Answers

The answer is A: The total kinetic energy of the particles of matter. I hope this helps

Answer:

O A. The total kinetic energy of the particles of matter

Explanation:

I got it right on assignment. (°ω°)

What part of the earth absorbs most of the sun's radiation?answers 1.The ocean. 1.The ground. 1.The clouds. 1.The lakes.

Answers

Answer: the ground

Explanation:

Which traits does the western harvest mouse have that might be adaptive for the environment where it lives?

Answers

Its tail helps it climb down the tall grasses and lets it swing from the grass like a monkey in a tree

Explanation:

Answer:

Into the adaptive Trait!

Explanation:

Which choice can be classified as a pure substance?

A. heterogeneous mixture

B.solution

C. Homogeneous mixture

D. compound

Answers

Answer:

d. compound

Explanation:

compound and elements are pure substances

Give 3 physical properties common to most metals

Answers

Answer:

What are you a 6 yo? Anyways, the most common properties are, They are good conductors of electricity, They are lustrous and They are sonorous.

204,900,000,000
How many significant digits are found?

Answers

Answer:

Explanation:

There are 4 significant figures because when there is not a decimal, then only numerical values over 0 are counted. So the numbers counted in sig figs are 2049, and none of the other 0s.

So if it was 204,900,000,000.0, then it would have 12 significant figures.

Some substances like chalk, duster, paper, wood, air are not found in the periodic table. why?

Answers

Because they are made up of more than one type of atoms. The periodic table of elements are made up of all elements discovered. Elements are only one type of atom

Answer:

They are not pure elements, instead they are compounds, hence why they are not found on the periodic table. (Periodic table only consists of pure elements)

Which unit could be used to measure volume?

Need help

Answers

Answer:

Explanation:

Because it milliliter and litre is used to measure volume not meter or millimeter

What are the ways that heat transfers? identify common examples of heat transfer.

Answers

Answer:

Conduction is the process of heat being transferred between objects through direct contact, and it's the most common type of heat transfer. For example, in cooking the burners on stoves will conduct heat energy to the bottom of a pan sitting on top of it. From there, the pan conducts heat to its contents.

Explanation:

Someone pls help me I will make you brain

Answers

The answer is C highest layer

What would cause a liquid to turn into a solid?

Answers

Answer:

Freezing the liquid

Explanation:

Freezing a liquid causes a liquid to become a soild.

Answer:

changing the temperature of the liquid

Explanation:

Ex. Cooking brownie batter(liquid), turns it into an edible brownie(solid). Ex. Putting water into a freezer freezes it, turning it into a solid.

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