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3 years ago

What kind of change is sodium hydroxide dissolving in water

Chemistry

1 answer:

Korolek [52]3 years ago

6 0

Physical change because water is not a gas or change . you can see through it.

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1.What is another term for the 24 hour clock?

s344n2d4d5 [400]

Answer:

military time

Explanation:

military time

5 0

2 years ago

Please help on this one?

Bezzdna [24]

Answer:

$\text{C. } _{36}^{85}\text{Kr}$

Explanation:

Your nuclear equation is

$_{35}^{85}\text{Br} \longrightarrow \, _{-1}^{0}\text{e} +\, _{x}^{y}\text{X}$

The main point to remember in balancing nuclear equations is that

the sum of the superscripts and must be the same on each side of the equation.
the sum of the subscripts must be the same on each side of the equation.

Then

85 = 0 + y, so y = 85 - 0 = 0

35 = -1 + x, so x = 35 + 1 = 36

The nucleus with atomic number 36 and atomic mass 85 is krypton-85.

The nuclear equation becomes

$_{35}^{85}\text{Br} \longrightarrow \, _{-1}^{0}\text{e} + \, _{36}^{85}\text{Kr}$

4 0

2 years ago

Read 2 more answers

This is a type of element that has many valence electrons, not a conductor.

cestrela7 [59]

What is the question

3 0

2 years ago

Equal amounts of N2 and O2 are added, under certain conditions, to a closed container. Which changes occur in the reverse reacti

geniusboy [140]

1) The forward reaction is N2 (g) + O2 (g) → 2NO

(that reaction requires special contitions because at normal pressures and temperatures N2 and O2 do not react to form another compound.

2) The equiblibrium equation is

N2 (g) + O2 (g) ⇄ 2NO

3) Then, the reverse reaction is

2NO → N2(g) + O2(g)

Answer: 2NO → N2(g) + O2(g)

4 0

2 years ago

Which is the scientific notation for 8,002.5 seg?

Blizzard [7]

8,002.5 would be written as
8.0025 x 10 and 3
because you move the decimal place 3 times to the left.

7 0

2 years ago