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KATRIN_1 [288]
2 years ago
8

The table shows the concentration of a reactant in the reaction mixture over a period of time.

Chemistry
1 answer:
Andrews [41]2 years ago
4 0

The average rate of the reaction over the first 450 seconds -2.2×10⁻³ M/s

<h3>What is speed? </h3>

Speed is defined as the rate of change of the distance moved with time. Mathematically, it can be expressed as:

Speed = distance / time

With the above idea, we can obtain the rate of the reaction as illustrated below:

<h3>How to determine the rate of the reaction over the first 45os</h3>
  • Change in concentration = 0.8 - 1.8 = -1 M
  • Time = 450 s
  • Speed = ?

Rate = Change in concentration / time

Rate = -1 / 450

Rate = -2.2×10⁻³ M/s

Learn more about speed:

brainly.com/question/680492

#SPJ1

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NEED HELP ASAP!!!!!!!!!!!!!!!!!!!!!!
Paraphin [41]
<h2>Answer:  C) 1s²2s²2p⁶</h2>

<h3>Explanation:</h3>

A noble gas has 8 electrons between the p and s orbitals of the outer shell. Helium is the exception because it only has two electrons.

<h3>                       ∴  1s²2s²2p⁶ is the noble gas (neon)</h3>

7 0
2 years ago
1. Calculate the percent oxygen in H2SO4.
Mashutka [201]
I believe the answer is 65.254%
6 0
3 years ago
Which liquids would cause the largest decrease in mass of a potato stick
riadik2000 [5.3K]

Answer:

distilled water I guess !

Just a guess though

If you find this useful, please mark my answer as the brainliest.

Explanation:

If you find this useful, please mark my answer as the brainliest.

distilled water

Explanation:

Some students investigated osmosis in raw potato sticks. The students measured the mass of three potato sticks using an electronic balance. The students left each potato stick in one of the three different liquids for 5 hours:i. distilled water. ii. dilute sodium chloride solution. iii. concentrated sodium chloride solution. After 5 hours they measured the mass again and calculated the change in mass. 1. Predict which of the liquids would cause the largest decrease in mass of a potato stick. 2. After the experiment, the students noticed that the potato stick with the lowest mass was soft and floppy. Explain why the potato stick had become soft and floppy. 3. The students followed the same experimental procedure with boiled potato sticks and found no overall change in mass in any of the solutions. Suggest why the mass of the boiled potato sticks remained the same.

3 0
3 years ago
Which would be a better base to use if you wanted to remove a proton from ethyne?
myrzilka [38]
-NH2 is the most favorable for the reaction
5 0
3 years ago
The density of water is 1.00 g/ml at 4°c. how many water molecules are present in 2.36 ml of water at this temperature?
spin [16.1K]

Mass of 1 ml of water 1 g as density of water 1.00 g/ml at 4° C. So, mass of 2.36 ml of water \frac{1}{2.36} g= 0.423 g.

Molecular mass of water is 18 g which indicates 18 g water contains 6.023 X 10^{23} number of water molecules. So, 0.423 g of water contains \frac{6.023 X 10^{23} X 0.423 }{18}  g = 0.141 X 10^{23} number of water molecules= 1.41 X 10^{22} number of water molecules.

5 0
3 years ago
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