03/07/19

Entropy, enthalpy, heat of formation and Gibb's Free energy
At what temperatures is the formation of CCl4 from graphite and chlorine gas spontaneous?
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03/07/19

Find Chlorine gas formed and which reactant remains in excess. (Use dimensional analysis)

Chlorine can be generated by heating together calcium hypochlorite and hydrochloric acid.Calcium chloride and water are also formed.A. If 50.0 g Ca(OCl)2 and 275mL of 6.00 M HCl are allowed to... more
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03/07/19

what will be the result if we mix Potassium format solution and Ammonium chloride solution?

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03/07/19

Potassium Chlorate yields potassium chloride and Oxygen. Equation in symbols and balance them
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03/07/19

Which part of the brain helps maintain balance? a. cerebrum. b. brain stem. c. spinal cord. d. cerebellum.
Divisions of the Nervous System
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03/07/19

Which part of the cerebrum is associated with hearing and memory? a. Spinal cord c. Frontal lobe b. Temporal lobes d. Cerebellum
Divisions of the Nervous System
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03/07/19

Chemistry Question
Make a general statement about how to use the oxidation potential list to predict whether a reaction between a metal and a metal ion in a compound will occur.
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03/07/19

Stoichiometry Help 2
Calculate the number of moles of Na2CS3 produced from 0.60 moles of CS2 by the following reaction. 3CS2 + 6 Na2CS3 + Na2CO3 + 3 H2O
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03/07/19

What mass of carbon dioxide will be formed when a mixture containing 1.93 g of ethylene and 5.92g of oxygen is ignited?
C2H4 + 3O2 -> 2CO2 + 2H2O
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03/07/19

Stoichiometry Help 1

Calculate the number of moles of nitrogen dioxide (NO2) produced when 3.0 moles of oxygen are produced in the decomposition of nitric acid by light? 4HNO3 -> 4 NO2 + 2 H2O + O2 (need to show work)
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03/07/19

At room temperature and pressure, air has a density of 0.00125 grams per cubic centimeter. What is the mass of the air in a room that is 3.3 m by 4 m by 4.2 m? Answer in units of kg.
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03/07/19

What is the volume of a sample of helium that has a mass of 7.42 × 10−3 g, and a density of 0.17847 g/L? Answer in units of mL.
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03/07/19

To treat a burn on your hand, you decide to place an ice cube on the burned skin.

The mass of the ice cube is 12.2 g, and its initial temperature is -13.9 °C. The water resulting from the melted ice reaches the temperature of your skin, 31.2 °C. How much heat is absorbed by the... more
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03/07/19

consider the mechanism
Consider the mechanism. Determine the rate law for the overall rate constant is represented as k. Step 1: 2A <-> B + C equilibriumStep 2: B + D ->... more
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03/06/19

how many grams are equivalent to 1.80 x 10-4 tons?
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03/06/19

an art teacher has 5 gallons of a mixture that is 80 %paint and 20%water . If she needs to thin the paint mixture so that it is 20% paint and 80% water ,how many gallons of water should she add
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03/06/19

C6 H12O62 6CO2+6H2O how to slove this problem

C6 H12O62 6CO2+6H2O how do I slice this problem I’m confused and don’t understand it & I need help figuring it out
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03/06/19

Convert 745.0 mmHg to kpa
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03/06/19

looking for minimum mass of methane?
Using a molar heat of combustion of –890 kJ/mol, The minimum mass of methane that must be burned to warm 5.64 kg of water from 21.5°C to 77.4°C, assuming no heat losses to the environment... more
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03/06/19

LA QUIMICA Chemistry help please please with cherry on top
You are asked to make 500.0 mL of a 1.00M SOLUTION OF HCL for a lab. You find some HCL in a cabinet, but the concontration is 12.4 M. How would you dilute the acid to get the 1.00 M solution you need? more
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03/06/19

Chemistry yayyy
125.0mL of a solution of HCLO3 of unknown concentration is titrated with a 3.2-M solution of NaOH. If it takes 88 mL OF NaOH 2 reach the endpoint, what is the concentration of the HCL03?
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03/05/19

13.0 grams of calcium react with 23.6 grams of chlorine. What is the empirical formula, calculated from this data, of calcium chloride?
13.0 grams of calcium react with 23.6 grams of chlorine. What is the empirical formula, calculated from this data, of calcium chloride?
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03/05/19

finding the mass of hexane required?
Using a molar heat of combustion of hexane (C6H14) –4163 kJ/mol, the mass of hexane required to increase the temperature of 1.76 L of water from 21.0°C to 70.0°C is a.bc? g.  Put your answer... more
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03/05/19

a 25.00 ml sample of am unknown HClO4 solution requires titration with 22.62 mL of 02000 M NaOH to reach the equivalence point. what is the concentratio of th eunknown HClO4 solution?
a 25.00 ml sample of am unknown HClO4 solution requires titration with 22.62 mL of 02000 M NaOH to reach the equivalence point. what is the concentratio of th eunknown HClO4 solution?
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03/05/19

i cant figure out the net ionic equation

1.Write a net ionic equation for the overall reaction that occurs when aqueous solutions of carbonic acid and sodium hydroxide are combined. Assume excess base. 2.Write a net ionic equation for the... more
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