Questions tagged 'Calculations'
26 questions
Please tell me what I did wrong on these. (dS for formulas)?
Calculate ΔS in units of J/K for the following scenarios: Formation of 1 mole of HI(g) from its elements in their standard states: Work: ( \text{H(g)} + \text{I(g)} \rightarrow \text{HI(g)} )...
A chemist decomposes samples of several compounds. The masses of their constituent elements are listed. Calculate the chemical formula
A chemist has decomposed samples of several compounds and has provided the masses of their constituent elements. Based on this information, please calculate the chemical formula for each compound.
Feb 13, 2025
How many oxygen atoms are in 2.00 grams of quartz?
How many oxygen atoms are in 2.00 grams of quartz? Could someone please provide a detailed explanation of the calculation process?
Calculate the mass in grams of $700 billion worth of gold.?
In 2009, one of the U.S. government’s bailout packages amounted to $700 billion, at a time when gold was valued at $800 per ounce (or $28.20 per gram). Calculate the mass, in grams, of $700 billion...
calculate how many grams of heavy water are required to produce 345.0 mg of ND3(g).?
Lithium nitride reacts with water to produce ammonia and lithium hydroxide according to the following equation: Li3N(s) + 3H2O(l) → NH3(g) + 3LiOH(aq). Heavy water, which contains the isotope deuter...
How do I calculate the average molar bond enthalpy of the carbon-bromine bond in CBr4 molecule.?
I have the following standard enthalpy values: ∆Hº(Br(g)) = 111.9 kJ/mol, ∆Hº(C(g)) = 716.7 kJ/mol, and ∆Hº(CBr4(g)) = 29.4 kJ/mol. I need to calculate the average molar bond enthalpy of the carbon-br...
Jan 25, 2025
Can anyone calculate my grade?
I'm struggling with my math skills and could use some help calculating my grade. Here’s the breakdown: tests account for 60% of our overall grade, with each of the three tests (the midterm and two fin...
Calculate ΔH for formation of 0.480mol of AgCl by this reaction.?
Calculate ΔH for the formation of 0.480 mol of AgCl using the following reaction: Ag⁺(aq) + Cl⁻(aq) → AgCl(s) ΔH = -65.5 kJ. Please explain how to perform this calculation, and additionally, complete...
If a child pulls a sled through the snow with a force of 50 N exerted at an angle of 39° above the horizont…
A child is pulling a sled through the snow with a force of 50 N, applied at an angle of 39° above the horizontal. What are the horizontal and vertical components of this force? Please provide detailed...
Jan 01, 2025
calculate the mass of O in 4.36 g of Cl 2o7?
How do I calculate the mass of oxygen in 4.36 grams of Cl2O7?