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A student heated a hydrated salt sample with an initial mass of 4.8702 g, After the first heating, the mass had decreased to
1. 6 answers
2. asked by jazz
3. 5,744 views
Could someone write out the total ionic equation and the net ionic equation for:2Na3PO4 (aq) + 3CuSO4 • 5H2O (aq) → Cu3
1. 1 answer
2. asked by Kaylee
3. 813 views
I have to match the items to the statements below, and I'm stuck! My answers are in parentheses, but I know that some of them
1. 1 answer
2. asked by Lindsay
3. 521 views
I'm filling out those missing value charts with atomic numbers, protons, charge, etc. The info i've been given is protons (4),
1. 1 answer
2. asked by Angeline
3. 397 views
If a student starts with 615g of Co(NO3)2 and obtains a 57.3% yield of CoS, what mass of CoS is isolated?Co(NO3)2 + K2S ---> CoS
1. 1 answer
2. asked by Brittany
3. 326 views
Please show how N and O are combined to make NO^+2 in Lewis dot structure. I'm having a hard time.Thanks
1. 1 answer
2. asked by Lisa
3. 373 views
I need help balancing a equation for the combustion of cellulose in oxygen to produce carbon dioxide and water vapor.C6H10O5 =
1. 4 answers
2. asked by linda
3. 1,127 views
Could someone let me know if I have balanced these equations correctly. balanced equation of the reaction of iron and oxygen to
1. 3 answers
2. asked by linda
3. 566 views
consider the following container of helium at 45C. intially the valve is closed. After the valve is opened what is the pressure
1. 3 answers
2. asked by linda
3. 1,142 views
I need help understanding oxidation I have a problem that states:The proper assignment of oxidation numbers to the elements in
1. 3 answers
2. asked by linda
3. 1,586 views
I am having a hard time understanding how to calculate pH. my textbook states that that pH =-log[H^+].I have two questions that
1. 2 answers
2. asked by jazz
3. 579 views
I need someone to check to make sure that I balanced my equations correctly. I have to add a (g) or (s) to indicate gases and
1. 1 answer
2. asked by jazz
3. 527 views
I am not good with math problems. I need help with these two problems. I'm not sure what equations to use. please help.A student
1. 3 answers
2. asked by jazz
3. 726 views
I need help figuring out the calculations of my experiment. I'm sure I did something wrong cause I can not figure how to
1. 2 answers
2. asked by jazz
3. 503 views
I need help to evaluate if I completed my experiment calculation.determination of water in a hydrate. 1. Mass of crucible, and
1. 2 answers
2. asked by jazz
3. 490 views
can someone please tell me what formula's to use for the 2 following chemistry problems.1. Calculate the solubility of potassium
1. 4 answers
2. asked by jazz
3. 3,318 views
Help. what is the formula to figure out the total mass of a solution?
1. 3 answers
2. asked by jazz
3. 1,725 views
Could someone let me know if I answered these questions?1. How do you classify the liquid pair mineral oil -- H2O, miscible or
1. 2 answers
2. asked by jazz
3. 900 views

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