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So I got a dragon touch tablet online and it worked fine until a few days ago. I couldn't turn it on and I press on it for a minute or two and it still doesn't turn on. I tried charging it to see if that was the problem but I charged it for ten or more hours and it still doesn't turn on. Is there like a reset button or something that I can do in order to help me with this problem?

In the 1960's comedy series I Dream of Jeannie why can't Jeannie blink herself out of the locked safe when she is stuck? Because she can blink into a locked room and she can blink out of practically anything else so why not the safe? Is there some sort of reason?

The heat capacity of steam is 2.01 j/gC and of ice is 2.09 j/gC. I have tried this answer many times. If someone will please show me an example of how to do the problem step by step that would be great because I really do not understand it.

thanks for all your help:)

I need some help with this question. I am trying to solve for the molar mass.

I really would like it if you can give me a step by step process on how it is to be solved, because I am totally lost.

This is the information that I have been given:

(The gas diffusion law is expressed as follows:

s = (3RT/Mm)^1/2

s = speed of diffusion of a gas (Units: m/s)

R = ideal gas constant = 8.3145 J/(mol*K)

T = Temperature (K)

Mm = molar mass of a gas (Units: kg/mol. kg's are used here to fit with the energy unit J = kg*(m^2)/(s^2)

the "^" sign is used a superscript. m^2 means square meter. m^1/2 means square root of meter)

I rearranged the formula (I hope I did it right) like this 3RT/(s)^2=Mm. When I plug in the answers, I get lost because I am not sure on how the units should cancel out. If someone could help me with this that would be great! Thanks so much:)

The question states:

A chemist collects 0.27 g of a gas in a 3.49*10^2 mL bubble at 30 deg. C and under a pressure of 753 mm Hg. Calculate the molar mass of the gas.

The water vapor pressure at the indicated temperature is 31.8 mm Hg

I need some help to solve this question. I have tried so hard to answer this question but I do not know why I keep getting it wrong. I used the formula PV= nRT. I know that this has to be the right formula but I do not know why I keep getting the wrong answer. If someone could show me in step by step how to solve this problem that would be great so that I can apply it to my other questions that I have. thank you so much you're a great help :-)

I need help with this chemistry question because I cannot seem to get the right answer and I have tried it many times.

Here is the question:

At 0 deg. C and under 331 mm Hg of pressure, 0.122 g of a gas occupy 1168.22 times as much volume in mL. Calculate the molar mass of the gas. (It takes 760 mm Hg to make an atm).

If you could help me with this question this would be so very helpful. :) Thanks for all your help. :)

The question is:10 mL of vinegar (Vng) solution are titrated by (1.70x10^1) mL of 0.500 M solution of NaOH. The active component of vinegar is acetic acid (AcH, CH3CO2H, Mm = 60.0 g/mol) which reacts with sodium hydroxide according to the following equation:

The equation: CH3CO2H + NaOH -> CH3CO2Na + H2O

The density of vinegar is 1.05 g/mL. What is the percentage by mass of acetic acid in the vinegar solution?

I do not know how to start this problem could someone help me with this and show me the steps because I was wondering how to get the answer. If someone could help me with this then that would be great thanks!!!:)

The question is : A 10 mL solution is titrated by 23.20 mL of a 0.10 M solution of NaOH. How many moles of citric acid are titrated?

The equation is: CitH3 + 3 NaOH -> CitNa3 + 3 H2O.

I need help and I was hoping that you could tell me if I was going in the right track. I was wondering do I subtract 23.20 mL -10 mL and get 13.2 mL and then do I convert it to liters and get 0.0132L and then multiply it by 0.10M and get 1.32*10^-3 mol? That is what I think to do but I just want to know if I am going on the right track to figure this out. Thank you for all your help:)

The question asks for the molarity of an HCl solution and says if 10.0 mL of the HCl solution are titrated by a 0.10 M solution of NaOH and the level of NaOH solution in the titration burette moves from 1.49x10^1mL to 3.592x10^1 mL?

I need some clues on how to solve this problem I was wondering if I could find the number of moles of the first problem by multiplying the 0.10M by 0.01L. Then I get stuck with the level of the NaOH solution because there are 2 of the solutions where it rises(1.49x10^1mL to 3.592x10^1 mL). Do I subtract them and then divide by the moles that I got in the other part of question?

I was wondering if someone could help me to see if I was doing this problem the right way. I was wondering if I could do mol/L for this problem but I would have to convert grams to moles first so would I convert 1.00g of the molar mass of oxalic acid dehydrate to moles and then do mol/L in order to get the answer? If you could correct me or make sure that I am doing the problem right then thank you so much!!!:)

I am having trouble figuring out this question for chemistry

The question is:What is the percent error in the determination of NaCl to Na2CO3 mole ratio when 0.50 g of Na2CO3 produce (8.37x10^-1) times as many grams of NaCl?

To solve this do you have to use the chemistry formula (Actual Yield-Experimental Yield/ Actual Yield)* 100? The chemical equation is: Na2CO3 + 2HCl -> 2NaCl + CO3 + H2O

If someone could help that would be great thank you so much!!!

I have to find the concentration of solution and I was wondering what to do. I have tried to use molarity formula M1*V1=M2*V2 and multiply it by the ratio several times but so far I don't have any luck.

The problem is that I must determine is:

the concentration of a sulfuric acid solution by titration with a standard sodium hydroxide solution. I have a 0.1232 M standard solution and then take a 20 mL standard sample that dilutes to 200 mL. Then you take a 8mL sample of the dilute acid solution and titrate it with the standard solution. You need 8.37 mL of standard solution to reach the endpoint. What is the concentration of the solution?

The equation is :2NaOH(aq)+H2SO4(aq) ------->Na2SO4(aq)+2H2O(l)

If someone could help me with this equation that would be great thanks a lot!!!

I am doing chemistry homework and I want to understand how to do this problem. The problem is: what is the concentration of an HCl solution if 35.0 mL of a 0.130 KOH solution are needed to titrate 42.0 mL of acid?

I really do not know what to do but I wonder does it have something to do with the ratio? If someone can explain to me the steps in how to do this problem this would be most helpful, thanks for helping:)

The question goes like this:

Using the balanced equation 2Cr(OH)3-------> Cr2O3+3H2O determine the theoretical yield of chromium (III) oxide (Cr2O3) if you started with 10.0 grams of chromium hydroxide(2Cr(OH)3).

To answer the first step I did this:

10.0 g of Cr(OH)3 *1mole of Cr(OH)3*1mole of Cr2O3 all divided by 103.024 g(the molar mass of Cr2O3) *2mole Cr(OH)3. The answer was then 0.049, so I multiplied that by 152 g of Cr2O3 (molar mass of Cr2O3) and got the answer 7.448g of Cr2O3.

Now the next step in the answer says:

How much water in grams and moles, would be produced?

I need help on answering this question I do not know what it is that I do. Do I take 3H2O and find the molar mass of it and then use the balanced reaction ratio in some way in the equation? If you can help with this question then that would be most helpful:) thanks:)

I am doing an assignment and I need some help if you know what this element stands for I can't find it anywhere it's not in my chemistry book. I know that k stands for potassium and the o stands for oxygen and the at stands for astatine but I do not know what it stands for together. If you could help with this I would really appreciate it:-)

She was in a few of them and I heard that she was going to come back and play in one more but when?

My friends and I are creating characters for a short story that we are making the characters have superpowers and I want them to each discover a cool new power.

-----Character one has smarts and mind reading, so the character one's powers are to do with the mind so I was wondering if the character should have an active power do you think that strength would be good?

-----Character two has speeding and disappearing I was wondering if character two should have a fighting power what would you suggest?

-----Character three shoots fireballs and water balls and snowballs and ice balls from hands and I want to give character three a mind power I was thinking controlling technology would that be good?

I would really appreciate it if you could answer these questions you have been a great help thanks:)

I have a friend that would like to know where she can get tickets to the Atlanta concert at Phillips arena that selena gomez will be having on October 26. How much does it cost for backstage passes and where can I get them? also is vip club and lounge access ticket the same as meet and greet ticket or is it different and with any of these passes do the people get to have a photo op with her? cause my friend wants to take a photo with selena. If you can answer these questions that would be great:) thanks:)

I want to watch the show lab rats but I can't seem to find a website where you can watch all of the episodes for free and without signing up for anything. Disney xd has some episodes that I can watch but not all of them and I want to watch all of the episodes. Do you know of any? Thanks:)