Sulfuric acid (H2SO4 Molar Mass = 98.1) can be prepared from S8, O2 and H2O by the following series of reactions. Balance! S8 + 8O2 -> 8SO2 2SO2 + O2 -> 2SO3 SO3 + H2O -> H2SO4 What volume of sulfuric acid is produced from reacting 70.0 grams sulfur with sufficient oxygen and water?(Specify gravity […]

Which of the following (anions/atom/cations) has the smallest radius? 1 Cl2 Ar3 K4 Ca2+ The correct answer and explanation is : The correct answer is Ca²⁺ (option 4). Here’s an explanation: The size of an ion or atom is primarily determined by its effective nuclear charge, the number of electrons, and the electron configuration. Let’s

Calculate the volume needed to have a weight of 390 lbf. The correct answer and explanation is : To calculate the volume needed to have a weight of 390 pounds-force (lbf), we need to consider the density of the material we are working with, since weight is a force that depends on both the mass

A liquid has a specific weight of 200 lbf/ft3. The correct answer and explanation is : The specific weight of a liquid refers to its weight per unit volume and is a measure of the force of gravity acting on a given volume of that liquid. It is typically expressed in units of pounds-force per

The lattice energy of sodium fluoride, NaF, is -908 kJ/mol. With the pairs Na+/Ca2+ and F/02 having roughly the same ionic radii, what would you expect the lattice energy of CaO to be? 1 -908 kJ/mol2 +908 kJ/mol3 -1777 kJ/mol4 -3477 kJ/mol The correct answer and explanation is : The correct answer is 3 -1777

How many liters of soft drink are there in 5.25 qt? A) 4950 LB) 55.7 LC) 4.95 LD) 5.57 LE) 5.0 L The correct answer and explanation is : To convert 5.25 quarts (qt) to liters (L), we need to use the conversion factor between quarts and liters. The conversion factor is: [1 \, \text{quart}

How many kilograms are in 30.4 lb? A) 13.8 kgB) 14 kgC) 67 kgD) 66.88 kgE) 66.9 kg The correct answer and explanation is : To convert pounds (lb) to kilograms (kg), we use the conversion factor: 1 pound = 0.453592 kilograms. Given that you want to convert 30.4 pounds to kilograms, the calculation is

How many pounds are in 3.5 kg? A) 7.7 lbB) 1.59 lbC) 0.629 lbD) 1.6 lbE) 7.70 lb The correct answer and explanation is : To convert kilograms (kg) to pounds (lb), we use the conversion factor: [1 \, \text{kg} = 2.20462 \, \text{lb}] So, to find how many pounds are in 3.5 kilograms, we

Deferred profit sharing plans are non-contributory since the contributions are made by the employer only. Therefore, the employees do not make any contributions. True or False The correct answer and explanation is : The statement is True. A Deferred Profit Sharing Plan (DPSP) is a type of employer-sponsored retirement plan in which the employer makes

Draw the Lewis structure for the disulfur monoxide (S2O) molecule. Be sure to include all resonance structures that satisfy the octet rule. The correct answer and explanation is : To draw the Lewis structure for disulfur monoxide (S₂O), we need to follow a systematic process considering the bonding and lone pairs of electrons. Here’s the