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Katen [24]
4 years ago
8

Choose the most alkaline substance in the group.

Chemistry
1 answer:
vekshin14 years ago
6 0

Answer:

pH=105

Explanation:

The higher the pH, the more alkaline it is.

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_A1(OH)3= _Al2O3+_H2O
Fantom [35]

Answer:

2AL(OH)3=AL2O3+3H20

Explanation:

6 0
3 years ago
complete the name of an alkali that could react with phosphoric acid to make sodium hydrogen phosphate
elena-s [515]
The answer is sodium hydroxide
7 0
3 years ago
How many grams in 2.75L of CL
Tamiku [17]

mass of Cl₂ = 8.61 grams

Explanation:

We have 2.75 of chlorine (Cl₂) which is gas. If we assume that it is behaving like an ideal gas and we work under standard conditions, we can use the following equation.

number of moles = volume / 22.4 (L / mole)

number of moles of Cl₂ = 2.75 / 22.4 = 0.123 moles

number of moles = mass / molecular weight

mass = number of moles × molecular weight

mass of Cl₂ = 0.123 × 71 = 8.61 grams

Learn more about:

molar volume

brainly.com/question/7144003

#learnwithBrainly

6 0
3 years ago
4.93x10^25x(6.02 x 10^23)
Dmitriy789 [7]
The answer should be
2.96786*10^49
3 0
3 years ago
If the half life of a radioactive isotope is 1 day, then how much of the original isotope remains at the end of two days?
ikadub [295]

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25%

Explanation:

In a half life of a radioactive isotope is 1 day,it means it loses its half mass each day

We a formula for N half life

\sf  { \frac{1}{2} }^{n}

where n is the number of days

Here the isotope is kept for 2 days

so it's left over mass will be

\sf { (\frac{1}{2}) }^{2}  \\  \\  \\  \frac{1}{2}  \times  \frac{1}{2}  \\  \\  \sf  \frac{1}{4}

It's left over mass 1/4th of the original mass

Now, we need to find it's percentage by multiplying with 100

\sf  \frac{1}{4}  \times 100 \%\\  \\  \sf   \cancel\frac{100}{4} \% \\  \\  \sf 25\%

<u>So</u><u> </u><u>2</u><u>5</u><u>%</u><u> </u><u>mass</u><u> </u><u>will</u><u> </u><u>be</u><u> </u><u>left</u><u> </u><u>after</u><u> </u><u>2</u><u> </u><u>day</u><u> </u><u>of</u><u> </u><u>half</u><u> </u><u>life</u><u> </u><u>radioactive</u><u> </u><u>isotope</u><u>.</u><u> </u>

8 0
2 years ago
Read 2 more answers
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