Question in picture plsss help

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Answer 1

Answer:

2nd answer is correct. Hope it helped you!

Related Questions

Can you please answer this for me please?
Which form of energy is stored chemical energy and example of?
A. Kinetic energy
B. Potential energy
C. Gravitational energy
D. Powered energy
WARNING: Sorry I'm only in 5th grade so if you see my level as collage I had to put that because it would not let me put anything else

Answers

Answer:

Well its B im sorry if im wrong.

Explanation:

how many elements are found in the third period. A.2 B.18 C.8 D.32

Answers

Answer:

Explanation:

u can find it on ur chemistry book

Answer:

C. 8

Explanation:

Check chemistry textbook

Which two molecules are broken down in your cells during cellular respiration? Whoever is correct gets thanks and brainliest

Answers

Answer:

glucose and oxygen

Explanation:

Cellular respiration is the aerobic process by which living cells break down glucose molecules, release energy, and form molecules of ATP. Overall, this three-stage process involves glucose and oxygen reacting to form carbon dioxide and water.

glucose and oxygen are broken down during cellular respiration

Core electrons shield what from the pull of the nucleus?
A. Identical electrons
B. Neutrons
C. Valence electrons
D. Protons

Answers

Answer:

C. Valence electrons

Explanation:

Please mark my answer as brainliest, I would appreciate it.

The density of a gas is 1.35 L what is the volume of the gas when the mass is 12.5 g

Answers

Answer:

9.26 L

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question we have

[tex]density = \frac{12.5}{1.35} \\ = 9.259259...[/tex]

We have the final answer as

9.26 L

Hope this helps you

If 7.75 L of radon gas is at 1.55 atm and -19 °C, what is the volume at STP?

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Show the online answer please for this question

The volume at STP is 12.9L.

What symptoms are caused by radon gas?

Possible symptoms include shortness of breath (difficulty breathing), a new or worsening cough, pain or tightness in the chest, hoarseness, or trouble swallowing. If you smoke and you know you've been exposed to high levels of radon, it's very important to quit smoking.

What is the primary reason for radon gasoline in the home?

It comes from the natural decay of uranium which is determined in nearly all soils. It typically moves up via the floor to the air above and into your private home through cracks and other holes in the basis. your home traps radon inner, which it is able to build up.

Learn more about Radon gas at https://brainly.com/question/1121893

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Which of the following is true if the net force on an object is zero? (1 pt) a. The object must be at rest. b. The object’s speed will decrease. c. The object’s speed will increase. d. The object’s direction of motion can change, but its speed will not. e. None of the above.

Answers

Explanation:

the object must be at rest

Difference between Electron Proton and Neutron?

Answers

Answer:

protons-positively charged

neutrons-uncharged

electrons- negatively charged

The differences are protons give out a positive charge neutrons are neutral and electrons give out negative charge.

Another one is the fact they are located on specific separate parts of an atom and each atoms consists a different amount each charge hope this helped :)

A scientist claimed that he radiocarbon dated a fossilized skull of a dinosaur and found it to be about 63 million years old. Do you support his claim? Provide at least one scientifically based reason why you do or do not support the claim.

Answers

Answer:Since dinosaurs are thought to be over 65 million years old, the news is stunning - and more than some could tolerate. After the AOGS-AGU conference in Singapore, the abstract was removed from the conference website by two chairmen because they could not accept the findings. Unwilling to challenge the data openly, they erased the report from public view without a word to the authors. When the authors inquired, they received this letter:

Explanation:

i do not own my copyrights

The nutrition label shows the total amount of carbohydrates in grams. One gram of carbohydrates provides four calories of energy.

For this food, the number of calories obtained from carbohydrates is
.

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Answer:

Dude you need to provide an image because almost everyone is not gonna know what u talkin about.

Explanation:

What pH scale number represents a neutral.

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What pH scale number represents a neutral.

The answer is 7

Can anyone solve this?

Answers

Answer:

3P2O5:

P:6 O:15

5CO2

C:5 O:10

3C6H12O6

C:18 H:36 O:18

4C6H12

C:24 H:48

3Mg3(PO4)2

Mg:9 P:2 O: 8

4(NH4)2S

N:8 H:32 S:4

1. What is a wave?

a.) a vibrating disturbance that transfers energy from place to place
b.) a material which a wave travels through
c.) an area where coils spread out
d.) the maximum distance a medium moves from its rest position

Answers

Answer:

Explanation:

A wave is a disturbance that moves energy from one place to another. Only energy — not matter — is transferred as a wave moves. The substance that a wave moves through is called the medium. That medium moves back and forth repeatedly, returning to its original position. But the wave travels along the medium

The free flow of electrons is responsible for

Answers

Answer:

An electrical phenomenon is caused by flow of free electrons from one atom to another. The characteristics of current electricity are opposite to those of static electricity. Wires are made up of conductors such as copper or aluminum.

Explanation:

from google

the ATOMIC WEIGHT OF ALUMINUM (AL) is 26.98. It has 14 neutrons. Aluminum has ?

a. an atomic mass of 13

b. an atomic number 13

c. 26 electrons

d. 26 protons

I believe b. an atomic number 13. is the answer.

Answers

B is correct please thank me by pressing heart

The atomic weight of Aluminum (AL) is 26.98. It has 14 neutrons. Aluminum has an atomic number 13. Therefore, option B is correct.

What is atomic number?

The atomic number of an element represents the number of protons in the nucleus of its atoms. Since the atomic number of an element is unique and determines its position in the periodic table, aluminum has an atomic number of 13.

The number of electrons in a neutral atom is equal to the number of protons, which in this case is 13. Therefore, aluminum has 13 electrons.

The atomic weight of aluminum (Al) is 26.98, which represents the weighted average mass of all the naturally occurring isotopes of aluminum, taking into account their relative abundances. The number of neutrons in an atom of aluminum is given as 14.

Thus, the correct option is B.

To learn more about the atomic number, follow the link:

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Describe the liquid state of matter and give an example besides water.

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Liquids. A liquid has a definite volume but takes the shape of its container. Examples of liquids include water and oil. Gases may liquefy when they cool, as is the case with water vapor.

What is the systematic name of the following compound?
KBr
Choose 1 answer:
Krypton bromide
Krypton(1) bromide
Potassium(1) bromide
Potassium bromide

Answers

Answer: D. Potassium bromide

In what way is cellular respiration like breathing?

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Answer:Cellular respiration is not the same as breathing, but they are closely related

Explanation: When you breathe in, you take in the oxygen your cells need for cellular respiration. When you breathe out, you get rid of carbon dioxide that your cells produce during cellular respiration.

Who asked the question “can you split matter forever?”

Answers

Answer:

Of course, what we today call atoms can be divided into more elementary particles, but not that many.

Explanation:

Iron(III) nitrate + potassium sulfide product names

Answers

First write down the chemical formula:

Fe(NO3)3 + K2S

Then, to determine the products use the AD+CB method to form your products:

A = Fe
B = (NO3)3
C = S
D = K2

Products: Fe2S3 + KNO3

Whole equation:

Fe(NO3)3 + K2S -> Fe2S3 + KNO3

Write the balanced chemical equation:

2 Fe(NO3)3 + 3 K2S -> Fe2S3 + 6 KNO3

What is the trend in atomic radius as you go across a period

Answers

Answer: Atomic radius decreases across a period and increases down a group.

Give the names of the elements combined in barium sulfide.

Answers

Answer:

Barium and sulpher are the elements that forms barium sulphide .

And its molecular fomula is BaS.

Explanation:

There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. Therefore, in barium sulfide, barium and sulfur elements are present.

What is chemical Compound?

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

An ionic compound is a metal and nonmetal combined compound. Ionic compound are very hard. They have high melting and boiling point because of strong ion bond. In barium sulfide, barium and sulfur elements are present. The molecular formula of the compound is BaS.

Therefore, in barium sulfide, barium and sulfur elements are present.

To learn more about chemical compound, here:

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Four students rolled a ball down a slide on the play ground which ball has the greatest applied force

Answers

BALL 1: .5 x 3.5=1.75F
BALL 2: 0.145 x 2.3 = .3335F
BALL 3. .2 x 1.9 = .38F
BALL 4: .45 x 2.0 = .9F

Which of the following best describes the difference between a mixture and a pure substance? A. A mixture has the same properties throughout; a pure substance has the different properties throughout. B. A mixture has different properties throughout; a pure substance has the same properties throughout A mixture is made up of only one type of atom; a pure substance is made up of more than C. one type of atom. A mixture is made up of more than one type of atom; a pure substance is made up of only D. one type of atom.

Answers

Answer:

B. A mixture has different properties throughout; a pure substance has the same properties throughout

Explanation:

We have two classes of substances which are pure and impure substances.

Pure substances are elements and compounds

Impure substance are simply mixtures.

Mixtures have the following properties;

Their composition is indefinite i.e. they consist of two or more elements and or compounds in any proportion by mass. Constituents retain their identities i.e. physical properties are retained. Constituents react differently to changed conditionsThey can easily be separated by physical methods.

Consider phosphoric acid, H3PO4. What is the total number of moles of H+ available for reaction in 4.50 L of 0.750 MH3PO4? Write your answer as a numerical value without any units. Type your numeric answer and submit

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Idk.................

Can someone plz help-

Answers

Answer:

The answer is 3 :)

Answer: 3. a bottle that was broken into many small pieces

d Which properties of plastics cause a problem when the container is empty?

Answers

Answer: Both of these are of great concern to human health. BPA is used in many things including plastic bottles and food packaging materials. Over time the polymer chains of BPA break down, and can enter the human body in many ways from drinking contaminated water to eating a fish that is exposed to the broken down toxins.

Explanation:

I think you will get it

Rust has the same properties as iron

True

False

Answers

Answer:

false

Explanation:

Which is the order of these solutions from strong acid to strong base?

Solutions:
household ammonia
battery acid
baking soda
stomach acid
antacid

A-stomach acid household ammonia battery acid antacid baking soda
B-battery acid stomach acid antacid baking soda household ammonia
C-battery acid stomach acid baking soda antacid household ammonia
D-stomach acid battery acid antacid baking soda household ammonia

Answers

Answer:

First is battery acid with a pH of 1, second is stomach acid with a pH of 1.5-3.5 (depends), third is antacid with a pH of 7, fourth is baking soda with a pH of 9, and finally, fifth is household ammonia with a pH of 11.

Here is a picture of the pH levels to better help you understand.

Answer:

Explanation:

How many moles of O2 are needed to burn 2.56 moles of CH3OH?

Answers

Answer:

[tex]n_{O_2}=3.84molO_2[/tex]

Explanation:

Hello!

In this case, since the combustion reaction of methanol is:

[tex]CH_3OH+\frac{3}{2} O_2\rightarrow CO_2+2H_2O[/tex]

In such a way, since there is 1:3/2 mole ratio between methanol and oxygen, we can compute the moles of oxygen that are needed to burn 2.56 moles of methanol as shown below:

[tex]n_{O_2}=2.56molCH_3OH*\frac{\frac{3}{2}molO_2}{1molCH_3OH} \\\\n_{O_2}=3.84molO_2[/tex]

Best regards!

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