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3 years ago

Can endothermic chemical reactions be spontaneous?

Chemistry

1 answer:

Verdich [7]3 years ago

5 0

Yes, IF entropy is high enough

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The quantity, 1,385 mg is equivalent to in scientific notation

Agata [3.3K]

Answer:

The answer is 1385 x10∧ -3

Explanation:

Scientific notation is a quick way to represent a number using notation in exponential form or powers of base ten.

This notation allows us to express too large or small numbers easily.

<u>For example: </u>

500 is written as 5x10∧2; Where the power 2 represents the number of 0's that follow 5.

0.0093 is written as 9.3x10∧-3; Where the power -3 represents the number of times the comma was moved to the right.

8 0

3 years ago

PLEASE HELP

victus00 [196]

Answer:

A restoration

Explanation:

the action of returning something to a former owner, place, or condition.

7 0

2 years ago

Read 2 more answers

A 75 Kg skateboarder is riding downhill, exerting 25 N. What is their acceleration?

Hunter-Best [27]

Answer:

<h3>The answer is 0.33 m/s²</h3>

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

$a = \frac{f}{m} \\$

where

m is the mass

f is the force

a is the acceleration

From the question

f = 25 N

m = 75 kg

We have

$a = \frac{25}{75} = \frac{1}{3} \\ = 0.333333333...$

We have the final answer as

Hope this helps you

4 0

3 years ago

An object was measured by a worker as

Gre4nikov [31]

Answer:

$\boxed{2.8 \, \%}$

Explanation:

$\text{Percent error} = \dfrac{\lvert \text{Measured - Actual}\lvert}{ \text{Actual}} \times100 \, \%$

Data:

Predicted = 17.4 cm

Actual = 17.9 cm

Calculation:

$\text{Percent error} = \dfrac{\lvert 17.4 - 17.9\lvert}{17.9} \times 100 \, \% \\\\= \dfrac{\lvert-0.5\lvert}{17.9} \times 100 \, \% = \dfrac{0.5}{17.9} \times 100 \, \% \\\\= 0.028 \times 100 \, \% = \textbf{2.8 \%}\\\\\text{The percent error in the measurement is } \boxed{\textbf{2.8 \%}}$

6 0

3 years ago

An unsaturated aqueous solution of NH3 is at 90.°C in 100. grams of water. According to Reference Table G, how many grams of NH3

Illusion [34]

The answer will be 2. 10.g
Hope it's help you

3 0

3 years ago