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Nutka1998 [239]
4 years ago
8

Why are numbers used in chemistry often expressed in scientific notation

Chemistry
1 answer:
Lelechka [254]4 years ago
5 0
Scientific notation allows us to work more easily with cumbersome numbers

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You are comparing a reaction that produces a chemical
MaRussiya [10]

If the reaction is a chemical change, new substances with different properties and identities are formed. This may be indicated by the production of an odor, a change in color or energy, or the formation of a solid.

7 0
4 years ago
Read 2 more answers
PLEASE HELP, DUE AT 12:00
elena55 [62]

Answer:

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Explanation:

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7 0
3 years ago
A chemical reaction in a lab experiment actually produces 1.23mol of BeBr2. The theoretical yield is 220g. To two decimal places
Mashutka [201]

Answer:

Percent yield = 94.62%

Explanation:

Given data:

Actual yield of BeBr₂ = 1.23 mol

Theoretical yield of BeBr₂ = 220 g

Percent yield = ?

Solution:

Theoretical yield in moles:

Number of moles = mass/molar mass

Number of moles = 220 g/168.82 g/mol

Number of moles = 1.30 mol

Percent yield:

Percent tiled = actual yield / theoretical yield × 100

by putting values,

Percent yield = 1.23 mol / 1.30 mol × 100

Percent yield = 0.9462 × 100

Percent yield = 94.62%

5 0
3 years ago
The. Is the process by which gases in the atmosphere absorb and reradiate heat
Anni [7]
The Greenhouse Effect

3 0
4 years ago
For the reaction 2 A + 4 B → 2 C + 4 D, what is the absolute magnitude of the rate of change for [B] when [C] is increasing at 4
Hoochie [10]

Answer:

r_B=9.6M/s

Explanation:

Hello there!

In this case, according to the given chemical reaction, it is possible for us to relate the rate of formation of C and the rate of consumption of B as shown below:

\frac{r_B}{-4}=\frac{r_C}{2}  \\\\

Thus, we solve for the rate of change of B as shown below:

r_B=\frac{-4r_C}{2}\\\\r_B=\frac{-4(4.8M/s)}{2} \\\\r_B=9.6M/s

Best regards!

8 0
3 years ago
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