answer question in picture please.

Answer:

b

Explanation:

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Answer: the answer is B. C

Explanation:

need help asap first comment gets brainiest answer
​

3. A substance which is made up of two are more different
elements chemically combined is known as

A. an atom
B. a substance
C. a compound
D. a molecule

For lunch you have a glass of sweetened ice tea. The glass contains crushed tea leaves, sugar, a slice of lemon, and both liquid and frozen water (ice cubes). Which of the following categories of matter best describes the contents of the glass? *

Soil is an important resource. The erosion of soil is a problem worldwide. Which human activity MOST directly increases soil erosion?
Group of answer choices

A supply of copper pipes is stored outdoors. Over the course of many years, the copper reacts with oxygen and turns green. What clue indicates a chemical reaction took place?

Question 3 (3 points)
(03.04LO)
Match the formula to the correct name. (3 points)
Column A
Column B
1.
Cas
a. Calcium sulfide
2.
CaSO4
b. Calcium sulfate
3.
CaSO3
C. Calcium sulfite

Last 2 pages out of 4 please help me with the others if you can't help me with this one.​

5. The prefox Semi-Deans Capardy SC Based on your knowledge of the properties of elements, which kind of elements is most likely to make semiconductors?

What phenomenon does the Coriolis effect arise from?

Mark all correct answers. Which of the following statements correctly describes plasmas

Hydrogen can be found in many things. It cannot be broken down to create something else. An example of something like hydrogen is oxygen. We call things like hydrogen or oxygen _ .

6.82

A 2.10-mole sample of crystalline acetic acid, ini-

tially at 17.0°C, is allowed to melt at 17.0°C and is

then heated to 118.1°C (its normal boiling point) at

1.00 atm. The sample is allowed to vaporize at.

118.1°C and is then rapidly quenched to 17.0°C, so

that it recrystallizes. Calculate AH° for the total pro-

cess as described.

Plz Help!

Make a funny sentence for flammability and compounds for Magnesium

Calculate the density in grams per cubic centimeter of a material that has a mass of
720 milligrams and a volume of 10.0 cubic centimeters. =

When gold is hammered it "squishes". Iron Pyrite is
known as "Fool's Gold". It is not..........
like gold,
but shatter into many pieces when struck by a
hammer, Iron Pyrite is..........​

what is an atoms nucleus made of

What is the relationship between the number of each atom used to form compound and oxidation number?

Be sure to answer all parts. Given that an E2 reaction proceeds with anti periplanar stereochemistry, draw the products of each elimination. The alkyl halides in (a) and (b) are diastereomers of each other. How are the products of these two reactions related? When drawing alkene substituents, remember that it is preferable to draw them as regular lines than as dashes and wedges. a. untitled draw structure ...

are books on a table transparent ir opaque

Explain why the several different types of microscopes are all necessary.

Plz help! :) :D I will mark you as BRAINLIEST for the best answer!!! ( I actually mean it)
Physical and Chemical Properties of Magnesium

Here is an EXAMPLE of how it has to be like. Instead of Mercury, you HAVE to do Magnesium

Physical Properties of Mercury: ”I’m a highly stable element, so you can count on me”

Chemical Properties of Mercury: ”I love to travel but I do corrode aluminum so we won’t be flying off on adventures in airplanes planes anytime soon”

what type of reaction is
CuO + H2SO4 ➡️ CuSO4 + H2O

When the first periodic table of the elements was published, the elements were arranged by atomic mass. Although
several elements seemed out of order, later discoveries showed the order to be correct.
Which event most likely helped the development of the periodic table?
O Scientists changed the atomic masses to better fit the pattern.
O Scientists refused to consider other ways to organize the elements.
O New technology was developed that modified the masses.
O New information changed the understanding of the atom's structure.


ANSWER ASAP

Please answer correctly..

will give the brainliest!

Urgent!!!​

All the elements in the universe heavier than Helium are/were created _______.
a.
during the Big Bang
b.
by stars
c.
by chemical reactions
d.
from Lithium

Two reasons photosynthesis is important

Which concept guided Mendeleev’s organization of the periodic table?

In a chemical reaction, atoms are not created nor destroyed.

All matter is composed of atoms.


Matter can be classified as a pure substance or mixture.


Properties of elements repeat in predictable patterns

is this correct? say something if it's wrong lol ​

Single energy transformation

Use the following chemical equation to answer the question:

2 N2 + 3 H2 ⟶ 2 NH3

How many atoms of N (nitrogen) are present in the products?

1. 2
2. 3
3. 6
4. 9