05/19/23

What is the difference between a tortoise and a turtle ?
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05/15/23

A metal with a specific heat of 0.900 J/g oC requires 610 J of heat to raise the temperature (the change in temperature) by 25 oC. What is the mass of the metal?

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05/13/23

Which of these solutions has the highest boiling point?
Which of these solutions has the highest boiling point? 3 M CH4 3 M SrF2 3 M CaF 3 M N2
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05/13/23

what is the pressure of the gas?
A student is studying a sample of neon in a container with a moveable piston (this means the container can change in size). If the sample in the container is initially at a pressure of 765.6 torr... more
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05/13/23

what is the molarity of the student's sugar solution?
A student is making a solution of sugar in water. If the student uses 0.64 moles of sugar and enough water to make 288.84 milliliters of solution, what is the molarity of the student's sugar... more
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05/13/23

What is the pressure of the sample?
A student has a sample of 1.66 moles of fluorine gas that is contained in a 27.7 L container at 297 K. What is the pressure of the sample? The ideal gas constant is 0.0821 L*atm/mol*K. Please round... more
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05/11/23

Dilution Calculation
What volume of 2.0M HCl is needed to prepare 0.50L of a 0.75M solution?
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05/10/23

In preparing to shoot an arrow, an archer pulls a bowstring back 0.32 m by exerting a force that increases uniformly from 0 to 278 N. What is the equivalent spring constant of the bow?
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05/10/23

A football punter accelerates a 0.43 kg football from rest to a speed of 8.5 m/s in 0.30 s, what constant force does the punter exert on the ball?
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05/10/23

What volume of 3 M Ca(OH)₂ is needed to make 125 mL of 0.2 M solution
Need help on a hw assigment
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05/10/23

0.75 moles of KOH are dissolved into 700mL of solution. What is the concentration.
Need help on a homework assignment
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05/09/23

Typing Spanish characters
How do I type a message using Spanish characters
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05/09/23

How to solve the problem?
A potentiometer is a variable resistor that can be adjusted given the needs of the application. For a 24-volt circuit compute the resistance that should be set to obtain the following current... more
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05/08/23

Word problem, algebra

Pressure varies inversely as volume. When the pressure is 16 pascals, the volume is 84 liters. What would the volume be if the pressure is reduced to 12 pascals?
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05/07/23

How do I solve the problem?
The resistance of an electric heater is 55 Ω when connected to 120 V. How much energy does it use during 25 min of operation?
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05/04/23

Chemistry Homework
Compare the concentrations of H+ and OH- for solutions that are acidic, basic, and neutral.
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05/04/23

What amount of heat, in kJ, is required to vaporize 108.30 g of ethanol (C₂H₅OH)? (∆Hvap = 43.3 kJ/mol)
need answer to this question. answer must be in significant figures.
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05/03/23

What volume of 2.50 M CH3OH solution is needed to provide 0.326 mol of CH3OH?
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05/02/23

Conservation Question (Look at description for more details; PHYSICS Related)
How much heat (in Joules) is required to increase the temperature of 2 kg of water from 20oC to 87.0oC? (The specific heat of water is 4186 J/(kg K))
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05/01/23

If a 0.155 kg baseball has a momentum of p = 4.96 kg·m/s as it is thrown from home to second base, what is its velocity?
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04/24/23

Stuck on chemistry problem step by step

1.00 L of a solution is prepared by dissolving 125.6 g of Naf in it. If took 180 mL of that solution and diluted it to 500 mL, determine the molarity of the resulting solution
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04/07/20

Did the actions of the Spanish Inquisition go against the teaching of Christianity…Why or why not?
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08/21/19

What's the lowest atmospheric pressure a tardigrade can remain active in?
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08/03/19

Why both sexes of the species don't show equal level of Competition?
In most species, it is seen that either males or females have evolved to be aggressive towards approaching members of the same species of the same sex and maintaining strict territorial boundaries.... more
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