3 years ago

A base that dissociated entirely into metal ions and hydroxide ions is known as a ________.

Chemistry

1 answer:

viva [34]3 years ago

6 0

Strong base since it is completely soluble

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One mole of nitrous acid (HNO2) contains 1.00 gram of hydrogen (H), 14.0 grams of nitrogen (N), and 32.0 grams of oxygen (O). Wh

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Mass % of nitrogen = mass of nitrogen*100 / total mass

= 14*100 / (1+ 14 + 32)

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= 29.7 %

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3 years ago

What is a common feature of elements in group 1, group 2 and group 3?

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all of them have seven valence electron

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Which of the following systems has potential energy only?

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a bird sitting on a branch

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3 years ago

What are the characteristics of Phosphate at room temperature?

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Answer: Phosphate is colorless , soft, waxy solid that glows in the dark when at room temperature.

Explanation:

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3 years ago

What is the energy released in this β − β − nuclear reaction 40 19 K → 40 20 C a + 0 − 1 e 19 40 K → 20 40 C a + − 1 0 e ? (The

Effectus [21]

<u>Answer:</u> The energy released in the given nuclear reaction is 1.3106 MeV.

<u>Explanation:</u>

For the given nuclear reaction:

$_{19}^{40}\textrm{K}\rightarrow _{20}^{40}\textrm{Ca}+_{-1}^{0}\textrm{e}$

We are given:

Mass of $_{19}^{40}\textrm{K}$ = 39.963998 u

Mass of $_{20}^{40}\textrm{Ca}$ = 39.962591 u

To calculate the mass defect, we use the equation:

$\Delta m=\text{Mass of reactants}-\text{Mass of products}$

Putting values in above equation, we get:

$\Delta m=(39.963998-39.962591)=0.001407u$

To calculate the energy released, we use the equation:

$E=\Delta mc^2\\E=(0.001407u)\times c^2$

$E=(0.001407u)\times (931.5MeV)$ (Conversion factor: $1u=931.5MeV/c^2$ )

$E=1.3106MeV$

Hence, the energy released in the given nuclear reaction is 1.3106 MeV.

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3 years ago