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3 years ago

The element hydrogen adom is made up of wich kinds of adams

Chemistry

1 answer:

egoroff_w [7]3 years ago

3 0

the element hydrogen atom is made up of oxygen atoms.

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Describe why corrosion is a natural process

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Answer :

Answer :because it happens due to moisture and oxygen

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3 years ago

Predict whether litmus paper will turn red or blue when dipped in:

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Answer:

a. blue, b. red, c. red, d. basic - blue

Explanation:

a.washing powder ( containing sodium carbonate ) basic -blue

b. orange juice ( containing citric acid )- acidic -red

c. lemonade ( containing H2CO₃ )-acidic - red

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3 years ago

Which particle has the least mass? Proton, a helium atom, electron, hydrogen atom

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Answer:electron

Explanation:

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3 years ago

What mass of aluminum chloride could be made from 8.1 g of aluminum and 4.2 L of chlorine at STP?

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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]

Answer: The energy released in the given nuclear reaction is 1.3106 MeV.

Explanation:

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.

6 0

3 years ago