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Colt1911 [192]
3 years ago
13

Fredrick is doing a lab on pH. He uses many household items to determine the pH of his items. Which of his actions best describe

s inappropriate lab safety?
Chemistry
1 answer:
Kruka [31]3 years ago
3 0

Explanation:

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For the following example, list the given and unknown information (including gratis or moles)
Setler79 [48]

Answer:

9.6 moles O2

Explanation:

I'll assume it is 345 grams, not gratis, of water.  Hydrogen's molar mass is 1.01, not 101.

The molar mass of water is 18.0 grams/mole.

Therefore:  (345g)/(18.0 g/mole) = 19.17 or 19.2 moles water (3 sig figs).

The balanced equation states that:  2H20 ⇒ 2H2 +02

It promises that we'll get 1 mole of oxygen for every 2 moles of H2O, a molar ratio of 1/2.

get (1 mole O2/2 moles H2O)*(19.2 moles H2O) or 9.6 moles O2

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2 years ago
The Greek letter delta (triangle sign) above the arrow in a chemical equation means.
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“yields” or “produces”
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3 years ago
What is the answer to question 7, NH4C2H3O2
Montano1993 [528]
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3 years ago
Find [OH-], pH and pOH of a solution where [H+]=7.2x10-2M
Mamont248 [21]
pH: 1.14266750357
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4 0
3 years ago
2 icl + h2i2 + 2 hcl is first order in icl and second order in h2. Complete the rate law for this reaction in the box below. Use
OleMash [197]

2 ICl + H2   ----> I2 + 2 HCl

as given that rate is first order with respect to ICl and second order with respect to H2

The rate law will be

Rate = K [ICl] [ H2]^2

b) Given that K = 2.01 M^-2 s^-1

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Therefore rate = 2.01 X (0.273)(0.217)^2 = 0.0258 M / s

5 0
3 years ago
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