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yKpoI14uk [10]
3 years ago
6

Which best explains why sawdust burns more quickly than a block of wood of equal mass under the same conditions?

Chemistry
2 answers:
hammer [34]3 years ago
8 0
More molecules in the sawdust can collide with oxygen molecules
Alla [95]3 years ago
5 0

Answer:

More molecules in the sawdust can collide with oxygen molecules

Explanation:

my foot says so

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What is the symbol for decimeter
Marysya12 [62]

Answer:

The symbol for decimeter is dm

Explanation:

No need for an explanation

5 0
3 years ago
Read 2 more answers
Select the pair that has the larger atom or ion listed first.
Sedbober [7]

Answer:

Correc option: Br^- \, , Kr

Explanation:

size of atom : it says somthing about how many shell present in a particular atom or ion and it can also be evaluated on the basis of radius of atom.

Br^- and Kr has highest number of shell as compared to other group of species .

Na ,S , Mg ,P all are from 3rd period but Kr and Br^- in the 4th period so size of species of this group will more,

Size increases on increasring the shell number

3 0
3 years ago
Which functional group is within the compound shown below?
mamaluj [8]

Answer:

A. Amino

example phenylalanine

Explanation:

B. Ester is R-CO-OR

example nitroglycerin

C. Hydroxyl R-OH

example ethanol

D. Carbonyl R-(C=O)-R

examples formaldehyde

4 0
2 years ago
Jeffrey is on his skateboard and starts skating down a ramp. Ten seconds later he is travelling at
AfilCa [17]

Answer: 2m/s^2

Explanation:

Velocity of skateboard = 20.0 m/s.

Time taken = Ten seconds (10 s)

Acceleration ​= ?

Recall that acceleration is the change in velocity of a body per unit time.

i.e Acceleration = (velocity / Time)

Acceleration = 20.0m/s ➗ 10 s

Acceleration = 2m/s^2

Thus, Jeffrey acceleration was 2m/s^2

7 0
3 years ago
Naturally occurring indium has two isotopes, indium-113(112.9040580 amu) and Indium-115 (114.9038780 amu. The atomic mass of ind
Kruka [31]

Answer:

The answer to your question is: letter c (96%)

Explanation:

Indium -113 (112-9040580 amu) ₁₁₃In

Indium-115 (114.9038780 amu)  ₁₁₅In

Atomic mass of Indium is 114.82 amu ₁₁₄.₈₂In

Formula

Atomic mass = m₁(%₁) +m₂(%₂)  / 100

%₁ = x I established this is an equation

%₂ = 100 - x

Substituting values

114.82 = 112.8040x + 114.9039(100-x) /100    and know we expand and simplify

114.82 = 112.8040x + 11490.39 - 114.9039x  /100

11482 = 112.8040x -114.9039x +11490.39

11482 - 11490.39 = 112.8040x -114.9039x

-8.39 = -2.099x

x = 3.99

Then % of Indium-115 = 100 - 3.99 = 96

5 0
3 years ago
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