Chemistry High School

1. Which is not a characteristic of a compound?​

1. Which Is Not A Characteristic Of A Compound?

Answers

Answer 1

Answer:

Just look at which one it doesn't show.

Explanation:

Characteristics of compounds

1. Components in a compound are present in a definite proportion.

2. It has a homogeneous composition.

3. Particles in a compound are of one kind.

4. A compound is made up of one or more atoms of the same or different elements.

5. In a compound the elements are present in a fixed ratio by mass.

6. A compound can be divided into simpler substances by a chemical process.

7. The physical and chemical properties of a compound are completely different from those of its constituents.

Related Questions

Similarities between sliding and fluid friction

Answers

True would be the answer

What is the volume of 80.0 g of ether if the density is 0.70 g/ml

Answers

I need to find the x pls help and show work 73838

What is the correct name for the following compound? "Make sure you are using correct naming
rules"

Answers

Answer:

c

Good luck on your assessment!

I’d say either a or c

What is the "mass number"? What does the mass number tell you?

Answers

Total number of protons and neutrons in the atomic nucleus. When you see a periodic table the order is usually the atomic number, the element symbol, the name, and then the atomic mass.

21 III
Choose the geologic formation that fits the description: rocks are stretched, moved
vertically into blocks, and dropped; the lower blocks are called graben and the taller
blocks called horst.
O volcanic mountains
O ocean ridges
O fault block mountains
folded mountains

Answers

Fault block mountains folded mountains

Answer:

Lifted fault block mountains

Explanation:

All objects have mass
O True
O False

Answers

The answerrrrr is truw

If you have 23mg of water, at what temperature will it Boil?

Answers

Answer:

i believe it is in the 200

Explanation:

Are the atoms really "sharing" electrons

Answers

No they are donating them

Please help❤️

Explain what is meant by noble gas envy.

Answers

Answer:

a phrase that describes how elements what do be stable and non reactive like the noble gas elements are.

define the term osmosis in your OWN words

Answers

Answer:

Osmosis is a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one equalizing the concentrations on each side of the membrane.

Explanation:

It takes much less energy to change the temperature of oil than it does to change the temperature of water

Answers

Answer:

i think so

Explanation:

is combustion an example of the law of conservation of matter and why?

Answers

Answer:

Explanation:

The law of conservation of mass states that matter cannot be created or destroyed in a chemical reaction. For example, when wood burns, the mass of the soot, ashes, and gases, equals the original mass of the charcoal and the oxygen when it first reacted.

In if the reaction below 49 grams of Fe3O4 produces a 78.25% yield of Fe. How many grams are produced? Fe3O4 + 4H2 = 3Fe + 4H2O
Imagine the = is an arrow

Answers

Fe produced : 27.53 g

Further explanation

Reaction

Fe₃O₄ + 4H₂ = 3Fe + 4H₂O

mol Fe₃O₄ (MW=233.55 g/mol) :

[tex]\tt \dfrac{49}{233.55 g/mol}=0.21[/tex]

mol ratio Fe₃O₄ : Fe = 1 : 3, so mol Fe :

[tex]\tt 3\times 0.21=0.63~g/mol[/tex]

mass Fe(Ar=55,845 g/mol)

[tex]\tt 0.63\times 55,845=35.18~g[/tex]

grams produced :

[tex]\tt \%yield=\dfrac{actual}{theoretical}\times 100\%\\\\actual=\%yield\times theoretical\\\\actual=78.25\%\times 35.18\\\\actual=27.53~g[/tex]

Convert 27 degrees Celsius to Kelvin
OOK
300 K
O 27K
327 K

Answers

Answer:

300 K

Explanation:

add 273 to change to kelvin

plz mark as brainiest

What is the difference between elements and compounds? *

Answers

Hi I need help pls pls pls pls pls pls pls so,s

Which is larger potassium or bromine

Answers

Answer:

potassium.

Explanation:

located at start of period 3, will have larger radius

Answer:

bromine

Explanation:

Fill in the blanks using terms from this unit.

Even though plants are rooted in the ground, they still move, exert
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choose your answer...
and do
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choose your answer...
.
Plant cells have very strong cell walls that allow
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choose your answer...
to build up inside of the cell as water is absorbed. This pressure is called
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choose your answer...
.
When turgor pressure is high enough in a cell, the cell walls become
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choose your answer...
and As a result, the cell becomes rigid and the plant is able to stand
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choose your answer...
and straight. When a plant does not get enough water, the turgor pressure inside of the cells
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choose your answer...
.
A decrease in pushing against the cell wall causes the cells to lose their
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choose your answer...
and This causes the plant to begin to droop, or
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choose your answer...
.
When the wilted plant gets enough water, the cells will become rigid again, and the plant will stand firm and straight once again.

Answers

Answer:

Even though plants are rooted in the ground, they still move, exert force, and do work.

Plant cells have very strong cell walls that allow pressure to build up inside of the cell as water is absorbed. This pressure is called turgor.

When turgor pressure is high enough in a cell, the cell walls become firm and as a result, the cell becomes rigid and the plant is able to stand tall and straight.

When a plant does not get enough water, the turgor pressure inside of the cells decreases. A decrease in pressure pushing against the cell wall causes the cells to lose their shape and shrink. This causes the plant to begin to droop or wilt.

When the wilted plant gets enough water, the cells will become rigid again, and the plant will stand firm and straight once again.

Explanation:

WILL GIVE BRAINLIEST (major help!!! need now!!!) David observed properties of four different compounds, only one of which is an ionic compound. His observations are shown in the chart.


A 2-column table with 4 rows. The first column labeled compound has entries W, X, Y, Z. The second column labeled observations has entries is a hard solid, melts at 44 degrees C, has a molecular structure; is a brittle solid, does not conduct electricity in water, has a crystal structure; is a hard solid, conducts electricity, has a molecular structure; is a brittle solid, melts at 801 degrees C, has a crystal structure.

Which is most likely the ionic compound?


W

X

Y

Z

Answers

Answer:

B. X

Explanation:

Answer:

The answer is D

Explanation:

Wave W is being diffracted, Wave X is being reflected, and waves Y and Z are being refracted.

Which observations is the best evidence that unknown liquid X is a composed of only pure substance

Answers

Answer:

A substance that is composed only of atoms having the same atomic number is ...  36 grams of an unknown liquid at its boiling point,.

Please answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!

Answers

It’s A or B but liquids take the shape of their container so I bet you it’s B

1. Which of the following equations is balanced?
a. Al + Br2- 2A1Br3
b. 2Al + 2Br2 → 3AlBr3
c. 2Al + 3Br2 → 2AlBr3
d. Al + Br2 → AlBr3

BRAINLIEST BRAINLIEST
please answer I’m trying to work with 0 hours of sleep :)

Answers

The answer would be A

Which of the following does NOT agree with the Law of Conservation of Mass?
A. Mass can be destroyed.
B. Matter cannot be created.
C. Mass prior to chemical change is the same as mass after chemical change.​

Answers

Matter cannot be created.

mass prior to chemival change is. thesame as mass after chemical change

Can somebody that is good at science help me with these two questions? Please and thank you!

Answers

1. The forces make the train float because the poles are the same on each side causing them to repell (north and north repell)

2. B is more stable. If you pushed A it would fall and that would cause more disturbance

Which of these is an example of a biotic factor?
hot desert sun
Mojave River
acrid desert air
Mojave grasshoppers

Answers

Answer: Mojave grasshopper

Explanation: this is the answer because it is living

Answer: Mojave Grasshopper

A biotic factor is something that it living. An abiotic factor is something that is nonliving. The only object that is living in the choices is the grasshopper. :)

Girls are usually completely physically mature by _____ years old.
A.
17
B.
19
C.
14
D.
21


Please select the best answer from the choices provided. Anyone know for EDGE


A
B
C
D

Answers

Answer:

a 17 bc it is how it works

Girls are usually completely physically mature by 18 years old.

What is puberty ?

Puberty refers to the physical transformation of a child's body into an adult one capable of fertile reproduction.

In girls puberty generally attains before two years earlier than the boys. And the exact age of the girls to attain puberty is in between the age of 10 to 14.

Hence the age of girls to attain puberty is 14.

To know more about puberty, visit the below link:

https://brainly.com/question/25821562

#SPJ2

At STP, 1 liter of O (g) and 1 liter of Ne(g) have the same (1) Mass (2) Density (3) Number of molecules (4) Number of atoms I​

Answers

1 liter of O and 1 liter of NE have the same number of molecules.

*WILL GIVE A BRAINIEST & 15 POINTS TO THE CORRECT ANSWER*

When an electron falls back to its original shell, the electron will...

A.) absorb energy as it goes to the excited state
B.) absorb energy as it goes to the ground state
C.) release energy as it goes to the excited state
D.) release energy as it goes to the ground state

Answers

Answer: D

Explanation:

in which group on the periodic table does the atom pictures belong?

a) 4
b) 6
c) 16
d) 14

Answers

Answer: Group 14

Explanation:

It's a carbon atom with 4 valance electrons.

d)14 explanation I took the test

A radio station transmits to a receiving antenna. The radio wave sent is a

a.
surface wave
b.
torsional wave
c.
longitudinal wave
d.
transverse wave

Answers

longitudinal

all sound waves are longitudinal

the answer is c , i took this while back

Isomers are molecules with the same molecular formula, but different structural formulae.
How many isomers are there in C7H16?
A.6
B.7
C.8
D.9

Answers

Answer:

D 9 is the answer

Explanation:

Hope it helps you

Please mark as brainliest answer
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