09/07/18

Melting Point of Ice As It Relates to Intermolecular Forces
If adding ions increases the melting point of solids (because the strength of intermolecular forces increase via ion-dipole interactions), then why does adding salt decrease the melting point of ice?
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09/07/18

most solids have crystalline structures in which the particles are arranged in regular geometric patterns
 i need to know if this is true or false 
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09/07/18

Lichens are the smalles living things
True or false if it is false cross out the underlined word and put the correct word in (the underlined word is lichens) 
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09/07/18

Down Syndrome
If a person with Down syndrome marries a person without Down syndrome, is it possible for their child not to have Down syndrome? Explain.
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09/07/18

7 pints of water how much in quarts
on a long hike jenny drank 7 pints of water how much did she drink in quarts?
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09/06/18

The difference between heat and temperature is what?
This question is based of a heat and chemistry unit.
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09/06/18

Explain, in detail, how catalysts change the rate of a reaction.
Explain, in detail, how catalysts change the rate of a reaction.
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09/06/18

What if you want to multiply 25 by 32 on a calculator but the button 2 doesn’t work?
What if you want to multiply 32 by 25 but the button 2 doesnt work what do you do?
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09/06/18

A skateboarder descends on a ramp from 172 feet to 67 feet in 15 seconds. What is the average change in height per second
I need to know this for my math homework. Please help me!!
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09/06/18

which solution is more alkaline and whats is the difference between the solutions alkalinity.
you have two solutions, solution A pH=6, solution B pH=8. which solution is more alkaline? What is the difference between the solutions alkalinity?
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09/06/18

If you measure 10 rods at 95mm, and measure 100 more rods at 97mm, then calculate the average, how many significant figures will the average have?
Significant figures when averaging measured values.
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09/06/18

Covalent compounds are more soluble inorganic solvent like
What is the answer of this question? Because water is a polar solvent   
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09/06/18

What is the chemical reaction for photosynthesis?
1. What is the chemical reaction for photosynthesis?
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09/05/18

2.70 g/cm^3 converted to kg/m^3
for my answer on my calculator I get 2700 g/m^3     But I’m not sure if I write 270. g/m^3 as my final answer because of the rounding to the least significant figure rule which we started with 2.70... more
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09/05/18

Chemistry Atomic mass calculation
The mass of each Wt isotope is measured relative to C−12 and tabulated below. Use the mass of C−12 to convert each of the masses to amu and calculate the atomic mass of Wt.   Isotope MassWt-296... more
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09/05/18

Chemistry Finding Atomic Mass
An element has two naturally occurring isotopes. Isotope 1 has a mass of 120.9038 amu and a relative abundance of 57.4%, and isotope 2 has a mass of 122.9042 amu. Find the atomic mass of this... more
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09/05/18

Simplify: (9717+35−8.4)×(8.7×106) and use sig figs to answer
I have been dealing with this problem for a while and cant figure out what is wrong im doing,I also have to use sig figs to my answer
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09/05/18

Simplify: 98.6 L to cm3 and use 3 sig figs to answer
I have been dealing with this problem for a while and cant figure out what is wrong im doing,I also have to use 3 sig figs to my answer
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09/05/18

Simplify this equation: (570.30−237.2)÷5.2
I know the asnwer to this question  which is 64.0576 but the problem that i have is that I dont know how many sig figs the answer should have and if I have to round it. should it be 64.1?
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09/05/18

how do you calculate the mole percent for a mixture
 calculate the mole percent for a mixture of 40 mL of methyl butyrate (MW 102.1 g/mol, d=0.89g/ml) and 10 mL butyric acid (MW=88.1 g/mol, d=0.96g/mL)
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09/04/18

Math word help
a chef plans to mix 100% vinegar with italian dressing. The Italian dressing contains 13% . The chef wants to make 150 millimeters of mixture that contains 42% vinegar. How much vinegar and how... more
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09/04/18

simplify this equation: (1.9×106)÷(2.56×105)]+7.88
I have been doing "coverting units" on chemestry, and I havent been able to simplify this correclty.
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09/04/18

Which period of the Periodic Table contains elements that may combine chemically by losing electrons from more than one principle energy level?
1) 1 2) 2 3) 3 4) 4
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09/04/18

Word question
the royal fruit company produces two types of fruit drinks. The first type is 60% pure fruit juice, and the second is 85% purefruit juice. The company is attempting to produce a fruit drink that... more
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09/04/18

The length of the rug is 32.7 in. And the width is 22.0 in.calculatethe area of the rug , in cm^2, to the correct number of significant figures
How many significant figures are in the length measurement 
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