Chemistry High School

According to the Bohr model, what period and group would the element be in on the Periodic Table?

Answers

Answer 1

Answer:

Group: 16 Period: 2

Explanation:

There are 8 protons, which determine that the element is Oxygen. Oxygen is in group 16 and Period 2.

Related Questions

What is the relationship
between the pancreas, the
stomach, and the
esophagus?
They are all part of the
circulatory system.
They are all part of
the nervous system.
They are all part of
the digestive system.
D
They are all part of the
respiratory system.
Type here to search
O
1
10:40 AM
2/11/2021
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Answers

Answer:

The stomach, gallbladder, and pancreas work together as a team to perform the majority of the digestion of food. Food entering the stomach from the esophagus has been minimally processed — it has been physically digested by chewing and moistened by saliva, but is chemically almost identical to unchewed food

please help, I'm lost

Answers

The answer is b.gold can’t really explain but the answer is b.

Gold is the correct answer

How does the temperature of the air cause a breeze to blow toward the land?

Answers

Answer:

The warm air over the land will rise throughout the day, causing low pressure at the surface. Over the water, high surface pressure will form because of the colder air. ... The wind will blow from the higher pressure over the water to lower pressure over the land causing the sea breeze.

Explanation:

PLZ MARK AS BRAINLEST!!!

In a sample of double-stranded DNA, 12% of the nitrogenous bases are guanine (G). What percentage of the nitrogenous bases in the sample are cytosine

Answers

Answer:

12%

Explanation:

The percentage of Guanine and Cytosine in DNA are equal to each other, as one molecule of guanine bonds with one molecule of cytosine.

If 12% of the nitrogenous bases are guanine, then another 12% will be Cytosine.

Conversely, the percentage of adenine and thymine in DNA are equal to each other.

Which substance do plants use to capture light energy from the sun? a) Carbon dioxide b) Chlorophyll c) Glucose d) Oxygen

Answers

Answer: chlorophyll

Explanation:

The substance that plants use to capture light energy from the sun is referred to as chlorophyll.

The chlorophyll is a colored pigment that is used by the plants for photosynthesis. The function of the chlorophyll is that it absorbs the energy from the sun which is then turned into a chemical energy.

Answer:

I don't know the answer to this either

Explanation:

sorry:(

On a 310 K day, soda is being carbonated in a factory.
a. A 0.031 m
pressure device receives a measurement of 9900 N from the gases in
the soda bottle. What is the pressure of the gases in the soda bottle?

b. Since soda contains water, 47.1 mm Hg of the pressure in the bottle is from water
vapor. What is the pressure of the Co2 in the bottle?

c. Before the CO2 is added to the soda, it's stored in a 1849 L container at 50 atm
and 310 K.

i. How many moles of CO, can fit in the container?

ii. Unfortunately, an accident (blame Steve), dents the container, reducing its
volume to 1399 L. If the number of moles and temperature are still
constant, what is the new pressure?

iii. The factory repairs the container so it's back to its original conditions.
However, the container is weakened, so if the pressure reaches 75 atm it
will burst. If the number of moles and volume are constant, at what
temperature does this burst happen?

Answers

The would answer would be a

Silver nitrate, AgNO3, is which type of matter?
A. Element B. Compound C. Heterogeneous mixture D. Homogeneous mixture

Answers

Silver nitrate, AgNO₃ is a compound which is a type of matter as it is made up of more than one type of element.

What is a compound?

Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.

Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:

1)Molecular compounds where in atoms are joined by covalent bonds.

2) ionic compounds where atoms are joined by ionic bond.

3)Inter-metallic compounds where atoms are held by metallic bonds

4) co-ordination complexes where atoms are held by co-ordinate bonds.

Learn more about compounds,here:

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How many grams of gasoline were
burned if 1.63 x 1023 molecules of
water were produced? Only report
number (no units) and use correct sig
figs.

Answers

Answer:

31.0 g C8H18

Explanation:

Gasoline is equivalent to C8H18

to convert molecule to gram you have to convert molecules to mols first.

Using Avocado's number we can figure that out.

(1.63 x 10²³ molecules C8H18) (1 mol C8H18/ 6.022 x 10²³) = 0.271 mols C8H18

Then we convert mols to grams using the molar mass of C8H18

C - 8(12.011) = 96.088 g/mol

H - 18(1.008) = 18.144 g/mol

add that together: 114.232 g/mol

(0.271 mol C8H18) (114.232 g/ 1 mol C8H18) = 31.0 g

31.0 g C8H18

P.S: SORRY IF THIS DOESNT HELP!! I dont know if they are talking about the actual formula for gasoline.

Chemical bonds release energy when they break apart, and take in energy when they form. How does this observation help explain the energy released by burning wood?

Answers

ENERGY WOULD BE RELALISED, MEANING BONDS ARE BEING BROKEN, SO IT IS AN EXOTHERMIC REACTION

HELP PLEASE
When ice changes into water, it is an example of a ___________ change. Also, when water changes into water vapor, it is an example of a _________ change.

A. physical...physical

B. chemical...chemical

C. physical...chemical

D. chemical...physical

Answers

I think it’s A sooooo yea

B. Chemical, chemical

In addition to the two types of motion found in liquids, gases have
What kind of motion

Answers

Answer:

In liquids, particles are quite close together and move with random motion throughout the container. Particles move rapidly in all directions but collide with each other more frequently than in gases due to shorter distances between particles.

How many molecules are in 83.2 g of chlorine gas (Cl2)?

Group of answer choices
1.42 x 10^24 molecules
1.78 x 10^28 molecules
7.04 x 10^23 molecules
14.2 x 10^24 molecules

Answers

Answer:

try all of them

1.42 x 10^24 molecules

1.78 x 10^28 molecules

7.04 x 10^23 molecules

14.2 x 10^24 molecules

Explanation:

What is the name for Mo(PO3)2

Answers

I think this is correct
Copper(II) Phosphite Cu3(PO3)2 Molecular Weight -- EndMemo.

Copper(II) Phosphite is the IUPAC name of the given compound. Ionic compounds don't get prefixes like di-, tri- etc.

International Union of Applied and Pure Chemistry is referred to as IUPAC. The IUPAC establishes the standards for the atomic weights that are shown on the periodic table and is the acknowledged authority for chemical nomenclature, measurements, including atomic mass values. Although IUPAC produces publications in many scientific domains, including physics, biology, and chemistry, it is most recognised for its work standardising nomenclature in the chemical sector. Standardising code names for nucleotide base sequences is one of the significant things the IUPAC has achieved in these areas. Copper(II) Phosphite is the IUPAC name of the given compound.

To know more about IUPAC, here:

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Helpppppppp I will mark brainliest

Answers

Answer:

9.8 m/s squared

Explanation:

Don’t think I know the answer to this one but let’s go with c

can someone please help!? i’ll mark you as brainliest

Answers

Answer:

Explanation:

Answer:

Reactants: NaBr and CA(OH)2

Products: CaBr and NaOH

Explanation:

Reactants are always on th left side of the equation and products on the right side

Pb(NO3)2
how do i solve this

Answers

You can see the periodic table one by one.

Pb(NO3)2 = PbN2O6

So there are

1Pb

and so you find the molecular mass from the periodic table and add all the numbers

Molacular mass of

Pb = 207

N = 14

O = 16

multiply it with the number of atoms

1Pb = 207 × 1 = 207

2N = 14 × 2 = 28

6O = 16 × 6 = 96

Molecular mass total = 207 + 28 + 96 = 331

So the molecular mass is 331.

What state does a maple tree enter during the winter?
A. thigmotropism
B. migration
C. hydrotropism
D. dormancy

Answers

D. dormancy is the correct answer

Determine the block of the element Iron which has 26 atomic number:

Answers

Answer:

Explanation:

Answer:

Iron

Explanation:

How does skin defend the body against pathogens?
A. It destroys pathogens with digestive acids.
B. It produces white blood cells that attack pathogens.
C. It blocks pathogens from getting inside the body.
D. It uses tiny hairs to trap pathogens.

Answers

C. Because skin acts like a barrier that doesn’t allow pathogens or other micro organisms to enter unless their is a cut, scratch, etc. on your skin.

advantages of solar energy

Answers

renewable energy source
reduces electric bills
low maintenance costs
reduced needs for fossil fuels and foreign oils

Another one is Electricity use

What is the equation and molecular weight of Scandium (II) Sulfite? Not sulfide

Answers

Explanation:

Molecular Formula

S3Sc2

Synonyms

Scandium sulfide

Scandium sulfide (Sc2S3)

Discandium trisulphide

Molecular Weight

186.1 g/mol

What happens to the air as a stove heats it? This question is about thermal expansion and convection, not “it gets hot”.
20 points for answering

Answers

Answer:

When there is heat at the bottom of this air or water, the air or water molecules in contact with the heat start to move, and the molecules spread apart. The heated air or water becomes less dense. It rises up until it gets to air or water with the same density as it has, and when it gets there, it pushes the air or water that was there out of the way. At the same time, new air or water fills the space that was vacated when the heated molecules rose up. The air or water that gets pushed out of the way falls down. This sets up a circular motion. Air or water is heated at the bottom, travels to the top, cools, gets denser, falls, is heated again and the whole cycle starts again. Convection does not occur in space because there is no gravity. Ovens work by convection. The heating coils at the bottom of the oven heat the air which climbs to the top, cools slightly, and falls down again.

Explanation:

A face centered cubic cell has an edge length of 495 pm. What is that atomic radius?

Answers

Answer:

r = ¼a√2

Explanation:

For a face centered cubic cell, which we call FCC, the atoms at the face diagonals touch each other.

Now, If we denote the edge length of cube to be "a" and the radius of the atom is denoted as "r", as seen in the attached FCC cell:

(√2)a = 4r

Divide both sides by 4 to get;

r = ¼a√2

Alkaline solutions have pH values below 7.

true or false ?

Answers

Answer:

It is false

Explanation:

ph value below 7 are acidic, and ph values above 7 are alkaline (basic)

How to study for a chemistry exam?

Answers

Answer:

post it notes ,snacks , or any think that u love to do or eat when u get it right u can eat it

Make a study guide, study off of it for at least 30 minutes a night until your exam

how many moles of manganese are in 1 mole of manganese(iv) permanganate

Answers

Answer:

4 moles...................

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Answers

Answer:

D 44.8 L liters of hydrogen gas

Calculate and give the answer with the correct number of significant
figures.
3.256 / 2.7

Answers

3.256 × 10

__________

2.7 × 10

32.56

____

= 1.2059259259

In experiment B, the iron filings weighed 2.0 g at the beginning of the experiment and the iron sulfide produced weighed 2.8 g. Explain this increase in mass

Answers

Answer:

The increase in mass is because the iron fillings have combined with a sulfide to produce iron sulfide and so the mass will increase.

In such a reaction like this, the mass of the reactants must be conserved. By so doing, the mass of reactants and products must be the same.

When two substances combine together, their masses added up to that of the individual masses. This helps to conserve the mass.

Explanation:

The increase in mass is because the iron fillings have combined with a sulfide to produce iron sulfide and so the mass will increase.

In such a reaction like this, the mass of the reactants must be conserved. By so doing, the mass of reactants and products must be the same.

When two substances combine together, their masses added up to that of the individual masses. This helps to conserve the mass.

RIGHT ANSWERS ONLY !!!

Answers

Answer:

450.0

Explanation:

Answer:

16km

sorry if it is wrong they change things up a lot

Explanation:

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