Chemistry High School

The amount of matter in an object is ___ and a common unit is the ___.

A. mass, mL
B. volume, mL
C. volume, gram
D. mass, gram

Answers

Answer 1
The answer would be B.
Answer 2

Answer:

The answer is D

Explanation:

Mass is the amount of matter in an object and gram is the common unit of measurement of mass

Related Questions

The moon stays in orbit around the Earth because of the Earth's

Answers

Answer:

Gravity

Explanation:

how many moles are in 5g of Na2CO3?
a) 0.047
b) 1
c) 2
d)21.2​

Answers

Answer:

0.047

Explanation:

Data : 5g , Na2CO3

Formula:

Molecular mass of Na2Co3 = no.of atomic mass x no. of atom

moles = mass÷ molecular mass

molecular mass = 2(23)+1(12)+3(16)

=106amu

moles = 5÷106

= 0.047 Ans:

help please asap. chem sucks

Answers

I'm assuming that C is carbon.

[tex]4.590 \: mol \: c \times \frac{12.01 \:g \: c}{1 \: mol \: c} [/tex]

55.1259 g of C

Help please I have 10 min.

Answers

Answer:

i cant see the question. i can try to help if you tell me the question.

Explanation:

also how do i use the comments???


(e)
Calculate the mass of one atom of sodium.
Use the equation:
relative atomic mass
mass of one atom of sodium =
Avogadro constant
Avogadro constant = 6.02 x 1023
Give your answer to 2 significant figures

Answers

Answer:

3.82 × 10 ^-23 g

Explanation:

6.02 x 10^23atoms = 1 mole of sodium

1 atom = 1/(6.02 x 10^23) mole

mass = mole × molar mass

= 1/(6.02 x 10^23) × 23

= 3.82 × 10 ^-23 g

please answer fast! Which of the following statements are false?
A: In a chemical change, atoms are rearranged to make new compounds.
B: The same element is present before and after a chemical change.
C: A physical change does not produce an entirely new substance.
D: A chemical property can be observed without changing the identity of the substance.



Answers

I believe it is C.

Hope this helps!

What’s the difference between directly
proportional and inversely proportional.

Answers

Answer:

Directly proportional:

A proportion of two variable quantities. when the ratio of two quantities are constant.

inversely proportional:

when one value decreases at the same rate that the other increases.

Explanation:

I hope this does help you, have a great day. :)

What are the elements in group 1 of the
periodic table called?​

Answers

Answer:

there called alkali metals

Answer:

alkali metals.

Explanation:

Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).

Two rabbit species, X and Y, live in an Arctic environment that is also populated by wolves. Species x turns white in the winter and
brown in the spring. Species y stays brown all year. The population of species X has slowly been increasing over the population of
species Y. What is most likely causing this population change?

Answers

Answer:

yy

Explanation:

how do i word a formal letter to a teacher saying i didn't pay attention during the science lessons and i now have no idea what to do? by the way, this is on edge so i haven't been on a call, or met my teacher in person.

Answers

Explanation:

Hello mr/mrs (name) I unfortunately couldn't pay attention to the class due to some issues I had therefore I don't know what we are doing in class

OR

Hello mr/mrs (name) I could understand what we were doing in class I would like it if you could break it down more or explain better to me

OR just say something it had something to do with your internet such as

Hello mr/mrs (name) I didn't understand what you were saying during our class due to some of my internet issues I was have throughout the day. I hope you can explain what we did during the class.

Those may be some of my excuses I've used before

they have worked for me:)

I don't know if that helped?:/

3) What are the three types of sedimentary rocks?

Answers

Answer:

clastic, organic, and chemical

Can somebody sort these from non-metals to metals?
Sonorous, low melting point, high density, brittle, dull, malleable, basic oxide

Answers

Sonorous- metal
Low melting point- nonmetal
High density- metal
Brittle-metal
Dull-nonmetal
Malleable-metal
Basic oxide-metal

Correct me is I’m wrong :)

I NEED HELP WIT QUESTION THREE

Answers

Answer: 2.00

Explanation:

2 rounded to the nearest hundredth is 2.00

your welcome :)

answers for all three:

1. 4.00

2. 16.04

3. 2.00

Name ways we use technology in inner and outer space
8th grade science btw

Answers

Answer:

Explanation:

Many common everyday services such as weather forecasting, remote sensing, satellite navigation systems, satellite television, and some long-distance communications systems critically rely on space infrastructure. ... Of the sciences, astronomy and Earth science benefit from space technology am in 6th grade btw

!! brainliest answer !! please help it's due tonight :)

Answers

Answer:

3. D

28. also known as Freon 12

Explanation:

Glycerine is viscous than water?why​

Answers

Answer:

Yes

Explanation:

Why is glycerol more viscous than water?

The glycerine is more viscous than water because due to presence of hydrogen atoms , we all know that glycerine has more hydrogen bonding than water molecule , which makes an aggregation which means that glycerine is more viscous than water , in simple words glycerine can't flow as that of water molecule.

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

A larger bullet does not necessarily have more momentum than a smaller bullet Explain why

Answers

Answer:

yes

Explanation:

a larger bullet weighs more then a smaller bullet so the smaller bullet goes faster.

Answer:

Explanation:

Momentum is dependent on mass and velocity. So, the smaller bullet can be moving at a much greater speed than the larger one.

Among the alkaline earth metals in Group 2A/A, which is more reactive - beryllium (element 4) or strontium (element 38)?
​

Answers

Answer:

Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They are harder and less reactive than the alkali metals of Group 1A.

Explanation:

When elements bond, what is the part of the atom doing the bonding?

Answers

Answer:

the  valance electrons

Explanation:

How many atoms are in 100g H2O ?

Answers

Answer:11

explain

: cause i think it is

hi please help, i will give 100 points

Answers

Explanation:

Boiling water:water heats up and bubbles physical change

Baking a cake: starts to cook into bread chemical change

Burning wood: turns into ash and burned wood chemical change

Painting a door: door changes color physical change

Answer:

water is yummy

Explanation:

Aluminum has metallic bonds between its atoms. Which statement BEST describes the
valence electrons in aluminum?
are exchanged with nonmetal atoms
are exchanged with other metal atoms
are localized and stay between metal atoms
are delocalized and move between metal atoms

Look at picture
ASAP please will mark as brainlist don’t got much time

Answers

Answer:

are delocalized and move between metal atoms

Explanation:

As the problem says, aluminum has metallic bonds. The main characteristic of metallic bonds is that the electrons are free to move between the metal ions (they are delocalized), thus being responsible for the good electrical conductivity of metals.

What temperature kelvin would .97mol of gas be to occupy 26L at 751.2mmHg?

Answers

Answer: 322.56 Kelvin

Explanation:

Use the Ideal Gas Law

[tex]PV=nRT[/tex]

R is the gas constant

T is the temperature in Kelvins

P is the pressure in atmospheres

V is the volume in liters

n is the number of moles of gas

First, the mm of mercury need to be converted to atmospheres using the conversion factor 1atm = 760 torr.

[tex]751.2mmHg (torr) =0.988atm[/tex]

Now plug everything in

[tex](0.988)(26)=(0.97)(0.0821)T\\T=322.56K[/tex]

cell are the blank unit of all living organisms​

Answers

yes cells are the blank unit for all things that are living

if a piece of aluminum has a density of 2.7g/cm^3. the mass of 5.2g,what is the volume

Answers

Answer:

Gold has a density of 19.3 grams per cubic centimeter, that is, 19.3 g/cm3 or 19.3 g cm-3. Aluminium has a density of 2.7 grams per cubic centimeter, that is, 2.7 g/cm3 or 2.7 g cm-3.

Explanation:

Answer:2.7 g cm-3.

Explanation:Gold has a density of 19.3 grams per cubic centimeter, that is, 19.3 g/cm3 or 19.3 g cm-3. Aluminium has a density of 2.7 grams per cubic centimeter, that is, 2.7 g/cm3 or 2.7 g cm-3.

PLS HELPPPP OMG PLSPLSPLSPLSPLS

Answers

Answer:

D 44.8 L liters of hydrogen gas

PLEASE HURRY IM TIMED Atoms are made up of electrons, neutrons, and____?
protons
compounds
mixtures
water

Answers

Answer: protons

Explanation:

A. Protons I learned this in class

Heeeeeellllppp, Iiiimmm sssooo stttuuuccckkk!​

Answers

Answer:

I think it would be D. None of the above

Explanation:

why I think this is because none of the answers really adds up to it

Which group in the food chain uses the energy of the sun to create its own food A consumers B predators C producers D prey

Answers

Answer:

C producers

Explanation:

All food chains start with energy from the sun. This energy is captured by plants. Thus the living part of a food chain always starts with plant life and ends with an animal. Plants are called producers because they are able to use light energy from the sun to produce food (sugar) from carbon dioxide and water.

Other Questions
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