All categories

3 years ago

What does percent composition tell you about a substance?

Chemistry

1 answer:

beks73 [17]3 years ago

8 0

Answer:

Percent composition tells you which types of atoms (elements) are present in a molecule and their levels. Percent composition can also tell you about the different elements present in an ionic compound as well.

You might be interested in

What is likely to happen to the population of thrushes the population of voles decreases?

Andrei [34K]

Answer:

I think it will decrease

7 0

3 years ago

Chemical reactions that release energy are called Question 1 options:

kolbaska11 [484]

Answer:

Exothermic Reactions.

Explanation:

Reactions that release energy are called exothermic reactions.

Whereas that absorb energy are called Endothermic reactions.

More energy is being released to the surroundings than was absorbed to initiate and maintain the reaction in case of exothermic reactions.

Burning of a candle is an exothermic reaction.

4 0

3 years ago

Read 2 more answers

The radioactive atom 61/27 co emits a beta particle. write an equation showing the decay

pickupchik [31]

Answer:

$\rm _{27}^{60}\text{Co} \longrightarrow \, _{-1}^{0}\text{e} + \, _{28}^{60}\text{Ni}$

Explanation:

The unbalanced nuclear equation is

$\rm _{27}^{60}\text{Co} \longrightarrow \, _{-1}^{0}\text{e} + \, ?$

Let's write the question mark as a nuclear symbol.

$\rm _{27}^{60}\text{Co} \longrightarrow \, _{-1}^{0}\text{e} + \, _{Z}^{A}\text{X}$

The main point to remember in balancing nuclear equations is that the sums of the superscripts and the subscripts must be the same on each side of the equation.

Then

60 = 0 + A, so A = 60 - 0 = 60, and

27 = -1 + Z, so Z = 27 + 1 = 28

Your nuclear equation becomes

$\rm _{27}^{60}\text{Co} \longrightarrow \, _{-1}^{0}\text{e} + \, _{28}^{60}\text{X}$

Element 28 is nickel, so the balanced nuclear equation is

$\rm _{27}^{60}\text{Co} \longrightarrow \, _{-1}^{0}\text{e} + \, _{28}^{60}\text{Ni}$

7 0

3 years ago

Question 2 of 5

Nataly_w [17]

Answer:

Explanation:

The answer is C because machines such as tractors and sprinklers are counted as technology, and are better examples than pesticides.

5 0

3 years ago

Essential life materials, like nitrogen and carbon, are exchanged and recycled through _____.

SpyIntel [72]

The answer is A, biogeochemical cycles.

5 0

3 years ago

Read 2 more answers