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# At 1 atm, how much energy is required to heat 83.0 g of H2O(s) at –12.0 °C to H2O(g) at 115.0 °C?

At 1 atm, how much energy is required to heat 83.0 g of H2O(s) at –12.0 °C to H2O(g) at 115.0 °C?

# whats the Lewis structure for HOCl?

its the molecule HOCl

# Can someone please check my work and answers on these two titration problems?

1.)  If 16.45 mL of 0.135 M nitric acid neutralizes 26.0 mL of ammonium hydroxide, what is the molarity of the base? HNO3(aq) + NH4OH(aq) --> NH4NO3(aq) + H2O(l) I used stoichiometry to find...

# Which of the following is NOT a unit factor related to a 5.00% aqueous solution of lithium chloride?

1. 5.00 g LiCl/ 95.0 g water 2. 100 g solution/ 5.00 g LiCl 3. 5.00 g LiCl/ 95.0 g solution 4. 95.0 g water/ 5.00 g LiCl 5. 95.0 g water/ 100 g solution I have no idea, please...

# If 10.0 ml of blood plasma has a mass of 10.279 g and contains 0.870 g of protein, what is the mass/ mass percent concentration of the sample?

Please explain how to do this!  Thanks.

# Will Co(OH)2 solid dissolve in NH3?

My Chemistry Professor said that cobalt (II) hydroxide solid will not dissolve in ammonia, but during the experiment I observed that there was a reaction taking place (the clear ammonia solution turned...

# frequency and kinetic energy.

A) The minimum frequency of light needed to eject electrons from a metal is called the threshold frequency, ν0. Find the minimum energy needed to eject electrons from a metal with a threshold frequency...

# Specific Heat

Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum) are needed to absorb 4.00 MJ of energy (in the form of heat) if the temperature of the sodium is not...

# At 1 atm, how much energy is required to heat 83.0 g of H2O(s) at –18.0 °C to H2O(g) at 169.0 °C?

At 1 atm, how much energy is required to heat 83.0 g of H2O(s) at –18.0 °C to H2O(g) at 169.0 °C?   Where do I begin?

# How many photons are produced?

How many photons are produced in a laser pulse of 0.528 J at 679 nm?

# How much copper wire can be made from copper ore?

Copper can be drawn into thin wires. How many meters of 34-gauge wire (diameter = 6.304 x 10^-3 in) can be produced from copper in 5.01 lbs of covellite, an ore of copper that is 66% Cu by mass? Copper...

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