All categories

3 years ago

Chemical reactions can be detected by precipitation of a _____ from a solution.

Chemistry

2 answers:

RideAnS [48]3 years ago

7 0

Answer: solid

Explanation: Chemical reactions are those which involve rearrangement of atoms.

Chemical changes are accompanied by following changes:

1) Absorption or release of heat

2) Change in color

3) Formation of gas bubbles

4) Formation of a solid product called as precipitate

Example of formation of precipitate or solid in chemical reaction: $2AgNO_3(aq)+BaCl_2(aq)\rightarrow 2AgCl(s)+Ba(NO_3)_2(aq)$

kvv77 [185]3 years ago

5 0

For sure, the answer isn't activation complex because I got that wrong. It is solid.

You might be interested in

Which statement correctly compares an atom of an alkali metal with an atom of the alkaline earth metal next to it on the periodi

Mumz [18]

<span>The alkali metal atom forms a +1 ion, while the alkaline earth metal atom forms a +2 ion. hope this helps</span>

6 0

3 years ago

What is the slope of the line?

pychu [463]

Answer:

The slope of the line is $-\frac{10}{7}$ .

Explanation:

The slope of the line ( $m$ ) is the change in dependent variable ( $y$ ) divided by the change in independent variable ( $x$ ):

$m = \frac{y_{f}-y_{o}}{x_{f}-x_{o}}$ (1)

If we know that $(x_{o}, y_{o}) = (0, 2)$ and $(x_{f}, y_{f}) = (1.4, 0)$ , then the slope of the line is:

$m = \frac{0-2}{1.4-0}$

$m = -\frac{10}{7}$

The slope of the line is $-\frac{10}{7}$ .

3 0

3 years ago

If calcium chloride is dissolved in water, what can be said about the concentration of the calcium ion? a. It has the same conce

e-lub [12.9K]

Answer:

b. Its concentration is half that of the chloride ion

Explanation:

As the calcium chloride formula is CaCl2

CaCl2 <--> Ca + 2 Cl-

4 0

3 years ago

what type of bond requires the give and take of electrons? a. ionic b. polar disalent c. polar covalent d. nonpolar covalent

Effectus [21]

Ionic bond involves electrostatic attraction between oppositely charged ions.
The ions are atoms that have gained 1 or more electrons and atoms that have lost 1 or more electrons.
Answer: The type of bond that requires the give and take of electrons is
A ) ionic bond.

3 0

4 years ago

Calculate the molarity of hydroxide ion in an aqueous solution that has a poh of 5.00

Simora [160]

Answer:

1.00 x 10^-5 M

Explanation:

pOH=-log[OH^-]

[OH^-]=10^(-pOH)

=10^-5

=1.00 x 10^-5 M

4 0

3 years ago