Answer:
<h2>The answer is 2.5 mL</h2>Explanation:
The volume of a substance when given the density and mass can be found by using the formula
From the question
mass of object = 10.02 g
density = 4.08 g/mL
The volume of the object is
We have the final answer as
<h3>2.5 mL to one decimal place</h3>Hope this helps you
Answer : The pH of a solution is, 7.28
Solution : Given,
Concentration of hydronium ion, =
pH : It is defined as the negative logarithm of hydronium ion concentration or hydrogen ion concentration.
Now put the value of hydronium ion concentration in this expression, we get the pH of the solution.
Therefore, the pH of a solution is, 7.28
Answer : The formula of the gas produced is, (phosphine gas)
Explanation :
According to the question, when sodium phosphide is treated with water then it react to give phosphine gas and sodium hydroxide.
The balanced chemical reaction will be:
By Stoichiometry of the reaction we can say that:
1 mole of sodium phosphide reacts with 3 moles of water to give 1 mole of phosphine gas and 3 moles of sodium hydroxide.
Thus, the formula of the gas produced is, (phosphine gas)