Kalen

This page lists questions and answers that were posted by visitors named Kalen.

Questions

The following questions were asked by visitors named Kalen.

What am I doing wrong? Estimate the normal boiling point of liquid mercury Hg(l) <--> Hg(g) Hf 0.0 61.4 S 75.9 174.97 DH = 61.4 kJ DS = .09907 T = DH/DS = 619.76 - 273 = 346. 76 degrees celsius

What is the sign of the entropy change in eaech chemical reaction? a) N2O4(g)--> 2NO2(g) b) PCl3(g) + Cl2(g) --> PCl5(g) c) 2 Al(s) + 3/2 O2(g) --> Al2O3(s) d)N2(g) + 3H2(g) --> 2 NH3(g) e) S(s) + O2(g) --> SO2(g)

A chandelier with mass m is attached to the ceiling of a large concert hall by two cables. Because the ceiling is covered with intricate architectural decorations the workers who hung the chandelier couldn't attach the cables to the ceiling directly above...

Blocks with masses of 1kg , 4kg , and 6kg are lined up in a row on a frictionless table. All three are pushed forward by a 50N force applied to the 1kg block. How much force does the 4kg block exert on the 6kg block? How much force does the 4kg block exer...

We are learning about circular motion, uniform and non uniform. how do you find tension in a string, when the string is attached to a object with mass m and length r? What about if you are swinging it around in a horizontal circle and the string makes a a...

A popular pastime is to see who can push an object closest to the edge of a table without its going off. You push the 100 g object and release it 2.90 from the table edge. Unfortunately, you push a little too hard. The object slides across, sails off the...

if 30.0 grams of molten iron (III) oxide reacts with 275 grams of aluminum, what is the mass of the iron produced.

Given the balanced equation, how many milliliters of oxygen gas at STP are released from the decomposition of 5.05 g of calcium chlorate?

Consider the following chemical equation: HgO(s) → Hg(l) + O2(g) How many milliliters of oxygen gas at STP are released from the decomposition of 3.00 g of mercuric oxide?

Consider the following chemical equation. MnCl2(s) + H2SO4(aq) → MnSO4(aq) + 2 HCl(g) How many grams of manganese(II) chloride must react with sulfuric acid to release 50.0 mL of hydrogen chloride at STP?

Consider the following chemical equation. Cl2(g) + O2(g) → Cl2O3(g) Assuming all gases are at the same temperature and pressure, how many milliliters of oxygen gas must react to give 3.50 L of Cl2O3?

Consider the following chemical equation. SO2(g) + O2(g) → SO3(g) What volume of sulfur dioxide gas reacts with 37.5 L of O2? The reaction conditions are 875°C and 1.00 atm pressure.

write y=sinx-cosx in the form y=ksin (x+a), where the measure of a is in radians. answers: sqrt2sin (x+3pi/4), sqrt2sin (x+5pi/4), sqrt2sin (x+pi/4), or sqrt2sin (x+7pi/4) ...?

What is needed to repay the loan at the of month of an 18 month installment loan for $1700 at 12% annual interest? Interest is computed using the Rule of 78.

Answers

The following answers were posted by visitors named Kalen.

Would the force of the 4kg block acting on the 1kg block be the mass=4kg+6kg times the acceleration =50/11?

In the total tension, what does &radic mean? Total Tension, T = &radic(T²+(mg)^2) The angle tan-1(mg/Tc) is the angle with the horizotal