Answer : The mass of copper(I) oxide is, 1180.5 grams.
Explanation : Given,
Moles of copper(I) oxide = 8.250 mol
Molar mass of copper(I) oxide = 143.09 g/mol
Formula used:
Now put all the given values in this formula, we get:
Therefore, the mass of copper(I) oxide is, 1180.5 grams.
Answer: micromoles of mercury(I) chloride
Explanation:
Molarity is defined as the number of moles of solute dissolved per Liter of the solution.
To calculate the number of moles for given molarity, we use the equation:
.....(1)
Molarity of mercury(I) chloride solution =
Volume of solution = 170 mL
Putting values in equation 1, we get:
Thus micromoles of mercury(I) chloride the chemist has added to the flask.
Answer:
A: leaving a copper penny in vinegar until it turns green
Explanation:
The corrosion is from oxidation -- a chemical reaction between the metal and oxygen, water, and carbon dioxide in the air. Rust is the term used to describe this process when it happens to iron instead of other metals. I also took it on E2020. If you need further explanation, please comment below.
Correct Answer: Option g: <span>adding salt to water lowers its freezing point
Reason:
Freezing point is a colligative property. When a non-volatile solution is present in solution, it's freezing point decreases. This is referred as depression in freezing point (</span>ΔTf<span>). Extent of lowering in freezing point is dependent on number of particles present in system. Mathematically it is expressed as:
</span>ΔTf = Kf X m
<span>
where, m = molality of solution
Kf = cryoscopic constant.
Hence, a</span><span>dding salt to water lowers the freezing point of solution.</span>