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How many grams are present in a 1 molal solution of C12H22O11 ( sucrose )

Is the answer 342g?Im wondering if I am doing this correctly. Also....how many moles/liter are present in a 2 molal solution of HCl?Im guessing its not quite as simple as 2 moles/1L. Could someone con

An isotope with mass number 44 has four more neutrons than protons. this is an isotope of what element

Sc? since its mass is 44.95 or Ca has 4 more.... Please show work if you could? I do chose best answer :P sorry if its too hard its university stuff..-this has 20 protons and 24 neutrons Which elemen

How to find the group of an element

Without the use of a periodic table. use aluminium as an example. more if possible-Familiarise yourself with the properties... If you roughly know the atomic number of each, you could see how many el

How many Cu atoms are present in a piece of sterling silver jewelry weighing 33.54 g

(sterling silver is a silver-copper alloy containing 92.5% Ag by mass) My best guess is 31.0245 but i still would like some help and please (if you could) show work! if not then its alright-multiply

Can some1 plz help with this chemistry..it due tonight and im so lost

According to the following reaction: SiF_4 (s) + 2 H_2O (l)-------->4 HF (aq) + SiO_2 (s) What would you multiply moles of silicon tetrafluoride by to convert to the units moles of silicon dioxide

How many photons does such a laser emit in one minute

Small helium-neon lasers emit 3.49mJ/s of light at 634nm. How many photons does such a laser emit in one minute. Any help in solving this question is greatly appreciated :) Im not too sure what formu

Chemical kinetics half life question help

1. Suppose a patient is given a certain amount of iodine -131 as part of a diagnostic procedure for a thyroid disorder. Iodine -131 undergoes first order radioactive decay. Given that the half-life of

Chemistry homework. solve the following problems. express your answers in proper scientific notation.

(4.0x10^5) x (3.0x10^3) (8.9x10^5) / (3.0x10^3 Can you guys please show the work and explain what you did please. Thanks guys.-Basically, if you have a scientific calculator itll solve it for you.

Chemistry question: Combustion

Could someone help me go through this? Im really confused...you dont have to give me the answer, I just want to know where to start...its so weird. A certain alcohol contains only three elements, carb

In a formal lab report, does the whole thing need to be in past tense 3rd person, or is it just the method

By past tense 3rd person I mean like, 200mL of water was poured into a 250mL beaker and placed on hot plate for X minutes. I know theres another name for that tense, I just dont know what it is. Anywa

Chemistry: Moaners and Groaners Puns Elements

American native Stomach-less male To mend torn clothing What do you do with barbells What to do with the dead To endure an ordeal A very funny prisoner To grab a guy Mollys blue jeans The bottom surfa

Why does tin have more than 1 oxidation number

i thought only transition elements have multiple oxidation states? like calcium only shows +2 which is in the same period as tin and also not a transition metal.-Period is not an indicator of ox st. G

Where does ice gets it's taste

Water has no taste, so how come ice does have?-Pure ice does not have any taste.. The taste of ice is actually the taste of foreign contaminants in the air that is trapped in the ice. Carbon dioxide

Does anyone know the boiling point of fossil fuel

Im actually quite confused about this one, does it even have a boiling point?? and there are different types of fossil fuel.... so im not really sure,,, it can be any kind of boiling point,,, jst any

Chemistry question!!! 10 POINTS BEST ANSWER!

for an acid base reaction what is the reacting species the ion or molecule that appears in the chemical equation in the following bases? A) perchloric acid B) hydriodic acid C) nitrous acid D) nit
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