3 years ago

Elements like gold, silver, and iron all have_________?

Chemistry

1 answer:

mojhsa [17]3 years ago

4 0

Answer:

coinage metals

Explanation:

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What is 1 item that is a compound?<br><br>Give an example of how the 1 item is a compound :D

spayn [35]

Water

Water is a compound because it is made from more than one kind of element (oxygen and hydrogen).

3 0

4 years ago

When cac2 reacts with water, what carbon-containing compound forms? when reacts with water, what carbon-containing compound form

meriva

Notice that each reactant is made up of two elements. To predict the products, all you have to do is interchange the combination of the two reactants while taking note that metal comes first, followed by nonmetals. With that being said, the reaction would be:

CaC₂ + 2 H₂O --> C₂H₂ + Ca(OH)₂

<em>So, the answer is C₂H₂.</em>

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3 years ago

What is the kb of the base po−34 given that a 0. 48m solution of the base has a ph of 12. 70? the equation described by the kb v

podryga [215]

The equation described by the kb value is 5.21 x $10^-^3$ .

The potential of Hydrogen is what pH is formally known as. The negative logarithm of the concentration of H+ ions is known as pH. Thus, the definition of pH as the amount of hydrogen is provided. The hydrogen ion concentration in a solution is described by the pH scale, which also serves as a gauge for the solution's acidity or basicity.

Assuming PO₄³⁻ (the phosphate anion).

PO₄³- + H₂O ==> HPO₄²⁻ + OH⁻

Kb = [HPO₄²⁻][OH⁻] / [PO₄³⁻]

We can find the [OH⁻] from the pH of 12.70.

pH + pOH = 14

14.0 - 12.7 = 1.3 = pOH

[OH] = 1x $10^-^1^.^3$