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3 years ago

Can someone easily explain to me how to do reaction rates?

Chemistry

1 answer:

iVinArrow [24]3 years ago

5 0

Explanation:

Reaction rate is a measure of speed of a chemical reaction.

Usually, based on rates, reactions can be divided into two parts:

Slow reactions which usually takes a long time.
Fast reactions which takes place completely in seconds or microseconds.

Reaction rate can be defined as a change in the concentration of a reactant or product per unit time:

The unit is mol dm⁻³ s⁻¹

Reaction rate = $\frac{change in concentration of a reactant and product}{time taken }$

The measurement of the reaction rate is based on the disappearance of a reactant or appearance of a product with increasing reaction time.

Learn more:

Reaction rate brainly.com/question/9642960

#learnwithBrainly

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Which has more neutrons: Cobalt or Nickel?

Inessa05 [86]

Answer:

Because the most common form of Nickel is Ni-58 while the most common form of Cobalt is Co-59, this means that Cobalt (which is number 27 on the periodic table) has 27 protons and 32 neutrons. Therefore 1 less proton but 2 more neutrons and hence has a greater mass than Nickel.

Explanation:

7 0

2 years ago

Explain how to use the displacement method to find the volume of an object?

DENIUS [597]

<span>A submerged object displaces a volume of liquid equal to the volume of the object. One milliliter (1 mL) of water has a volume of 1 cubic centimeter (1cm3).</span>

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2 years ago

Based on the diagram below, how much of the excess reactant is left over? *

Alexxandr [17]

Answer:

3 of lunchmeat and 2 slices of cheese

Explanation:

From the question given,

Each sandwich contains:

2 bread + 3 lunch meat + 1 cheese.

Now, the limiting reactant is the slice of bread.

We can determine the leftover as follow:

1. For the lunchmeat.

From the simple equation above,

2 bread requires 3 lunchmeat.

Therefore, 6 bread will require = (6 x 3)/2 = 9 lunchmeat.

Lunchmeat given = 12

Lunchmeat required = 9

Leftover lunchmeat = 12 – 9 = 3

Therefore, 3 lunchmeat is leftover.

2. For cheese.

From the simple equation above,

2 bread requires 1 cheese.

Therefore, 6 bread will require = 6/2 = 3 cheese.

Cheese given = 5

Cheese required = 3

Leftover cheese = 5 – 3 = 2

Therefore, 2 cheese is leftover.

From the simple illustrations above,

3 lunchmeat and 2 cheese are leftover.

7 0

3 years ago

A student practicing for a track meet ran 300 meters in 30 seconds. what was her average speed?

ololo11 [35]

Answer:

Explanation:

Her average speed can be found by using the formula

$v = \frac{d}{t} \\$

d is the distance

t is the time taken

From the question we have

$v = \frac{300}{30} = 10 \\$

We have the final answer as

Hope this helps you

7 0

2 years ago

The image shows a piston system where gas is compressed. If the uncompressed system is at a standard pressure of 1 atm, what is

MrMuchimi

The answer is 2 atm. I guessed on the problem and got it right. I don’t know the work though.

8 0

2 years ago