09/14/17

HELP ON PHYSICS HOMEWORK! (only stuck on these three)
Estimate or measure the amount of time that passes between breaths when you are sitting at rest.Convert the time from seconds into hours:Convert the time from seconds into milliseconds (ms):Convert... more
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09/14/17

What would be the final temperature if a 2kg piece of lead at 250∘C is inserted in a container with a 15kg of water at 40∘C? (for lead, c= 128 J/kg∘C)
I solved this and got 208.68 (not rounded) did I solve this correct? Because others got 34.8
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09/14/17

what is the wavelength (in nanometers) of light that has a frequency of 5.88x10^14 s-1?
????????????????????
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09/14/17

i walk at a speed of 4.50 ft/second, how many hours would it take me to travel 8.00x10^15 picometers?
I got 1.62 hours is the right ?
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09/14/17

what is the wavelenght (on nanometers) of a photon when an energy of 7.25x10^-19 J?
what is the wavelenght (on nanometers) of a photon when an energy of 7.25x10^-19 J?   really need help thank you
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09/14/17

calculate the wavelenght (in nanometers) of light that has a frequency of 5.88 x10^14 s^-1 (hint: speed of light is 300000000 m/s)
calculate the wavelenght (in nanometers) of light that has a frequency of 5.88 x10^14 s^-1 (hint: speed of light is 300000000 m/s)
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09/14/17

how many moles of c do 4.9 x10^24 atoms represent?
 how many moles of c do 4.9 x10^24 atoms represent? 
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09/14/17

why does h2+cl2 form hcl? isnt it unbalanced?
i am studying for an exam and am very confused rn
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09/14/17

A zygote contains 23 chromosomes
True or False?
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09/13/17

A Dhilob has a mass of 20.2 milligrams what is the Dhilob mass in grams?
A Dhilob has a mass of 20.2 milligrams what is the Dhilob mass in grams?
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09/13/17

solving a value mixture problem using a linear equation
Ivan's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Ivan $5.80 per pound, and type B coffee costs $4.55 per pound. This month, Ivan made 128 pounds of the... more
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09/12/17

The density of gold is 19.32 g/cm3. Calculate the volume of the sample of gold in liters that weighs 2.416 kg?
 The density of gold is 19.32 g/cm3. Calculate the volume of the sample of gold in liters that weighs 2.416 kg?
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09/12/17

what does diffusion mean
I'm trying to finish a 8th grade social study questionnaire and I haven't really learned anything on it. Any advice or answers would help. thanks!!!!!!!
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09/12/17

h and n is ionic or covalent
what is the ionic or covalent of h-n      nn 1234567890-12345678901234567890
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09/12/17

what is the difference between starch and glycogen
Question Guidelines Include a summary of your question and a more detailed description. Be sure to check the similar questions to see if your question has already been answered! We'll notify... more
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09/12/17

How do the structures of ionic and covalent compounds differ?
topic how it is different and cool  
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09/12/17

I have 70% solution of saline solution and some 80% solution of saline. I need to combine the two solutions to get 8.5 ml of a 78% solution of saline
show formula
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09/11/17

An air stream contains 3 mol % water and flows into a column with calcium chloride pellets. The pellets absorb 95% of the inlet water and nothing else. The pell
I need help with this question
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09/11/17

100 mg of Drug A was administered. analysis of the patient’s blood concentration was: Drug A 10 micrograms/L =10,000 liters. What is the Vd?
drug dose calculations
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09/11/17

a backpacker carries 3.5 liters of white gas for her stove. how many pounds does the fuel add to her load? assume density of the white gas is 0.84 g/cm2
i do not know what to do about the density information 
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09/11/17

“ at what temperature are the fahrenheit and celsius temperature scales the same?” Recall that fahrenheit and celsius temperatures are related by 5F-9C=160
The following question was worth $32,000 on the game Who Wants to Be a Millionaire?: “ at what temperature are the fahrenheit and celsius temperature scales the same?” answer this question. Recall... more
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09/11/17

Calculate the volume in cm^3 of 240 mg silver ring if the density of silver is 10.49g/cm^3
Calculate the volume in cm^3 of 240 mg silver ring if the density of silver is 10.49g/cm^3 solve the problem 
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09/11/17

Explain how the structure of water is related to its emergent properties?
This is a college question, answer with detail but not too much  
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09/11/17

8 out of 10 dentist prefer Crest toothpaste. What is the ratio of dentist who do not prefer crest to those that do?
8 out of 10 dentist prefer Crest toothpaste. What is the ratio of dentist who do not prefer crest to those that do?  
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09/11/17

mixture problem
A metal alloy weighing 8 oz and containing 30% platinum is melted and mixed with 2 oz of pure platinum. What percent of the resulting alloy is platinum?
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