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4 years ago

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

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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

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

So 25% mass will be left after 2 day of half life radioactive isotope.

8 0

2 years ago

Read 2 more answers