Free Chemistry Homework help

[Poor Teacher]

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[Allie]

What is a carbon molecule surrounded by 4 methyl groups called?

[morgan]

Problem:
You need to obtain 1.00 mo C atom and your source for these C atoms is the sucrose (C12 H22 O11) contained in an acqueous solution having a density of 1.0181g/m. and 5.05% of its mass percent as sucrose.

How many milliliters of the solution are required?

[morgan]

Problem:
You need to obtain 1.00 mo C atom and your source for these C atoms is the sucrose (C12 H22 O11) contained in an acqueous solution having a density of 1.0181g/m. and 5.05% of its mass percent as sucrose.

How many milliliters of the solution are required?

[HELP]

All types of bonding force are through to be the result of simultanious attractions between opposite charges. this attraction is called an _______ attraction.

[RockStar]

polar. it is a polar attraction, HELP.

[happy day]

how many moles are represented by 16.0g of ethanol,c2h5OH?

[ameer ghazy]

When a current is applied to a container of pure water no change is noted until a small amount of sulfuric acid is added, WHY?

[jason s]

calculate the solubility product constant for cupric hydroxide from half-cell potential

[ajk]

How many milliliters of .170 M HCl are needed to titrate 50. mL of a solution that contains 1.5 g of NaOH per liter?

[tonarra j]

The arrangement of ion in sodium chloride showa that each ion is surrounded by ______ oppositely-charged ions.

[Sarah H]

Need Help w/ Stoichiometry
Ammnonia is made industrially by reacting nitrogen and hydrogen gas under pressure and high temperature. If 4.0 mole of hydrogen gas is reacted wit excess nitrogen gas, how many moles of ammonia will be produced?
Please help thank you ya'll

[Antepli]

is there hetero-anulen in organic chemistry?
if there is ; i need to information about this compound or compounds

[Need help]

Write the reaction that occurs when propene reacts with hydrogen gas in the presence of a catalyst

[Help]

I have many questions.
1. Sodium metal reacts with water to produce Hydrogen gas.
2Na(s)+ 2H2O(aq)---> H2(g)+ 2NaOH(aq)
If 60 grams of Na completely reacts with water and the Hydrogen gas produced is collected at 35 degrees celsius at a pressure of 737 mm Hg. What is the volume of the H2 gas is collected?
2. The following reaction takes place in a basic solution. Balance the following ionic reaction using the method of REDOX half reactions. Show the half reactions and explicitly idenify which of these reactions represents oxidation and which represents reduction. Give the oxidation number of each element of both the reactants and the products.
MnO4 + SO3 2----> MnO2 + SO4 2-
3. The pressure and the volume in each bulb is indicated. The temperature in each of the bulbs are the same. What is the pressure inside the system when all the valves are opened? Assume that the temperature remains constant during the process.
1st bulb CO2 P=2.13atm V=1.5L
2nd bulb H2 P=.861atm V=1.0L
3rd bulb Ar P=1.15atm V=2.0L
4. Consider the following reaction:
2HgO(s)----> 2Hg(l)+ O2(g)
Assume that delta H and delta S do not change much with temperature
a. What works in favor of this reaction being spontaneous, and what works in favor of this reaction being non-spontaneous?
b. Calculate the temperature range in which the reaction will be spontaneous.

[Katie Johnson]

How do I use the Charles law to solve problems in Chemistry

[Katie Johnson]

Need helo in understanding how to use Charles Law to solve problems

[grace]

how many moles are in 5.60 L of Cl2 at standard temperature and pressure?

[Lori]

name 2 acids ans 2 bases found in homes, chemical names and chemical formulas and substance found.

[HELP Stephanie]

4.5 g of sugar are dissolved in 200 g of benzene. . What is the freezing and boing point of this solution