This is false, because copper is an element.
To be solution, it has to have at least 2 different substances. Solid solution of metals is often called alloy.
Answer:
NaNO2 is the formula for sodium nitrite
Explanation:
Check the selected ions chart to find out more in depth.
Answer:
The molarity of a sugar solution is 2 M.
Explanation:
Molarity is a concentration measure that expresses the moles of solute per liter of solution. In this case it is calculated with the simple rule of three:
4 L of solution--------8 moles of sugar
1 L of solution ------x= (1 L of solution x 8 moles of sugar)/4 L of solution
x=2 moles of sugar---> <em>The solution is 2M</em>
The amount of substance at a certain time t, At, with half-life of h is determined by the equation,
At = (Ao)(0.5)^(t/h)
where Ao is the original amount.
From the given,
At/Ao = 0.45 = (0.5)^(t/432)
The value of t from the equation is 497.67 years.
