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2 years ago

Calculate the poh of this solution. round to the nearest hundredth. ph = 1.90 poh =

Chemistry

1 answer:

Viktor [21]2 years ago

6 0

Answer:

The answer is 5.10

Explanation:

<h3>Given;</h3>

pH = 1.9

pOH = ?

We know that

pH + pOH = 7

pOH = 7 – pH

pOH = 7 – 1.90

pOH = 5.10

Thus, The pOH of the solution is 5.10

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A motor cyclist starts from rest and reaches a speed of 6m/s after travelling with uniform acceleration for 3s. What is his acce

choli [55]

Answer:

2m/s²

Explanation:

When an object starts or at its state of rest it has an Initial speed U = 0

Final speed = 6m/s

total time taken for the acceleration = 3s

Acceleration =?

Acceleration is the change in velocity (speed) with time

Time rate of change of velocity

Acceleration = Change in Speed(velocity)

Time taken

Hence,

Acceleration =  V - U 

a = 6 - 0

a = 6 

a = 2m/s²

4 0

3 years ago

Please answer this question ASAP

Nezavi [6.7K]

Answer:

put a test tube over the opening, remove it and quickly put a lit splint near the mout or in the tube. if you hear a squeaky pop it is hydrogen.

Explanation:

hydrogen ignites in air.

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3 years ago

What is the solubility of Na2HAsO4 at 60 degrees C

nlexa [21]

C. 65g / 100ml of water

6 0

3 years ago

If element X has 83 protons, how many electrons does it have? ______ electrons

Zolol [24]

The element has 83 electrons

5 0

3 years ago

33.23 grams of a thin sheet of iron is completely oxidized in 7 days. How would you express the rate of conversion of the silver

tresset_1 [31]

Answer:

A. 0.0440 moles/day

Explanation:

First, let's figure out how many moles 33.23 grams of silver is. We do this by dividing the number of grams by the molar mass of silver, which is 107.87 g/mol:

33.23 g Ag ÷ 107.87 g/mol = 0.3081 mol Ag

Now, let's divide this by 7 to get the rate per day:

0.3081 mol Ag ÷ 7 days = 0.0440 mol/day

Thus, the answer is A.

7 0

3 years ago