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lesya [120]
4 years ago
7

What is the best reason for using iron filings (shreds) instead of an iron nail in a chemical reaction?

Chemistry
1 answer:
wlad13 [49]4 years ago
6 0
The answer is C
be use it’s right
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An object's velocity can be described by its acceleration and direction.<br><br> True<br> False
coldgirl [10]

Answer:

False

Explanation:

An object's velocity can be described by it's direction. Because velocity is a vector. Besides velocity and acceleration are different units they can't be described by each other.

7 0
3 years ago
What is the si unit for the quantity of particles in a sample?
kaheart [24]
The SI unit for the amount or quantity of small particles in a sample is referred to as the mole.

This tells how much in terms of atoms or molecules are present for a particular mass.
7 0
3 years ago
PLEASE I NEED THIS ANSWERED IN 5 MINS
yKpoI14uk [10]
The answer would be: C.  160.3 J/mol*K 

To solve this question, you need to know the equation for Gibbs free energy formula. Entropy is expressed as delta S. The temperature would be expressed as T. Don't forget that temperature use Kelvin as unit, not Celsius

The formula would be:
G= H- T*S
130.5 kJ/mol= 178.3kJ/mol - (25+273.15K)*S
(298.15K)*S=178.3kJ/mol - 130.5 kJ/mol
S= (47.8kJ/mol)/ 298.15K=
S= 0.1603 kJ/mol*K= 160.3 J/mol*K        ------> 1kJ= 1000J
4 0
3 years ago
A student prepares a solution by combining 100 mL of 0.30 M HNO2(aq) and 100 mL of 0.30 M KNO2(a). Which of the following equati
katrin2010 [14]

Answer:

B

Explanation:

This creates a buffer solution meaning it will just neutralize out and does not change the PH massively.

7 0
3 years ago
Identify the rate-determining step. Question 6 options: always the second step always the last step the fast step the faster ste
marin [14]

The rate determining step in a reaction is the slowest step in the reaction.

<h3>What is the rate determining step?</h3>

Thee term rate determining step is used to describe the slowest step in a reaction. This reaction determines the overall rate of the entire reaction.

Hence, in this case, the rate determining step in a reaction is the slowest step in the reaction.

Learn more about rate determining step:brainly.com/question/12663878

#SPJ1

8 0
2 years ago
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