Answer:
Ammonia gas reacts with oxygen gas.
Nitric oxide gas and liquid water are produced.
Platinum is used as a catalyst.
The equation is unbalanced because the number of hydrogen atoms is not the same on both sides of the equation.
Explanation:
Answer:
At D: <em>Soil</em><em> </em><em>erosion</em><em> </em>us the process taking place.
Soil erosion is the washing away of the Earth's or soil's top layer by eroding agents.
Process of coating with metal by means of an electric current. Plating metal may be transferred to conductive surfaces (e.g., metals) or to non-conductive surfaces (e.g., plastics, wood, leather) if a conductive coating has been applied. Usually the current deposits a given amount of metal on the cathode (workpiece) and the anode (source of metal) dissolves to the same extent, maintaining a fairly uniform solution. Silver plating is used on tableware, electrical contacts, and engine bearings. The most extensive use of gold plating is on jewelry and watch cases. Zinc coatings prevent the corrosion of steel articles, and nickel and chromium plate are used on automobiles and household appliances.
<span>Petroleum refinery process for light hydrocarbon streams in which an electrostatic field is used to assist in separation of chemical treating agents (acid, caustic, doctor) from the hydrocarbon phase. </span>
<span>(metallurgy) </span>
<span>Purifying metals by electrolysis using an impure metal as anode from which the pure metal is dissolved and subsequently deposited at the cathode. Also known as electrolytic refining.
Hope this helps xox :)</span>
<u>Answer:</u> The correct answer is Option A.
<u>Explanation:</u>
We are given:
4.5 wt % of Pb means that 4.5 grams of lead is present in 100 g of alloy.
95.5 wt % of Sn means that 95.5 grams of tin is present in 100 g of alloy.
To calculate the atom percent of any compound in a mixture, we use the equation:
where,
= Avogadro's number
Moles of a compound is given by the formula:
Given mass of lead = 4.5 g
Molar mass of lead = 207.19 g/mol
Given mass of tin = 95.5 g
Molar mass of tin = 118.71 g/mol
Hence, the correct answer is Option A.