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3 years ago

What mole ratio would you use to calculate how many mole of oxygen gas would be?

1 answer:

7 0

The mole ratio one would need to calculate will be the ratio of grams of O2 are in one mole; that's the atomic mass of oxygen from the periodic table.

Oxygen has an atomic mass of 15.998 (most of the time, rounding to 16 is fine). But remember, oxygen always exists in nature as a diatomic molecule (two atoms covalently bonded together) as O2...so (32 grams O2/1 mole O2)

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By the reaction between

kap26 [50]

Answer:

ANSWER is E

Explanation:

2H₃PO₄ + 3Ca(OH)₂→ 6H₂O + Ca₃(PO₄)₂

6 0

3 years ago

Read 2 more answers

Classify each amino acid according to whether its side chain is predominantly protonated or deprotonated at a pHpH of 7.40.7.40.

Zepler [3.9K]

Answer: His and Lys are deprotonated but Asp will be protonated.

Explanation:

As the pH is given as 7.4 and pK of His is given as 6.00. There will occur a positive charge on His when it's pH < pK therefore, it is neutral at the given pH.

As the pK value of Lys is 10.53 that is greater than the pH of 7.40. Therefore, charge on Lys is positive.

As the pK value of Asp is 3.65 which is less than the pH value of 7.40. Hence, Asp has a negative charge.

Therefore, we can conclude that His and Lys are deprotonated but Asp will be protonated.

3 0

4 years ago

Pls help with this science homework

natka813 [3]

These are all the answers. Hope I helped

1. A

2. C

3. A

4. B

3 0

3 years ago

Read 2 more answers

In a lab in New York, Thomas and Nikola collected data over several trials. Thomas recorded his measurements as 10.0 A, 11 A, an

Anna11 [10]

Nikola's reading has a lower range and it is logical to conclude that his reading is more precise.

Explanation:

Precision is the ability to reproduce the same set of result from a measurement. The more repeatability a measurement is, the more precise it is.

From the given pool of data, it is easy to determine which set of data is more precise over the other.

Thomas measurements: 10.0 A, 11 A, and 8 A

Nikola measurements: 9.0 A, 9.2 A, 8.8 A

Using the range method, it is possible to find the precision in this pool of data.

Method and Solution:

Find the range of the sample:

Range = highest value - lowest value

Thomas measurement; Range = (11-8)A = 3.0A

Nikola measurement; Range = (9.2-8.8)A = 0.4A

Find the mean of the samples:

Mean of Thomas measurement = $\frac{10 + 11+ 8}{3}$ = $\frac{29}{3}$ = 9.7A

Mean of Nikola measurement = $\frac{9+ 9.2+ 8.8}{3}$ = $\frac{27}{3}$ = 9A

Now let us quote the range of value of the mean of each measurement:

Thomas 9.7±3.0A

Nikola 9.0± 0.4A

Nikola's reading has a lower range and it is logical to conclude that his reading is more precise.

Learn more:

mean calculation brainly.com/question/12068498

#learnwithBrainly

5 0

3 years ago

Does anyone know how to study on this kind of stuff? Maybe some studying tips? ☺️

LekaFEV [45]

She I study I like to read the question while covering the answer and then answer it I. My head. Then I check to see if it is right. Also if you want flash cards just search up the topic with quizlet for online quizzes about your subject. If needed take 25 mins to study with 5 min breaks.

5 0

3 years ago