0
What else can I help you with?
How do you prepare a 500mL of 1M of NaCl solutuion?
If you need to make just 100mL, then you need 1 tenth of a liter that is 5M. If you were to make 1L of 5 molar NaCl, you would need 5 times the molar mass of NaCl (58.44g/mol) dissolved in 1L of water. Thus for 1L of a 5M solution you need 5 * 58.44g, or 292.2 grams of NaCl. However, since we only want 100mL, which is 1/10 of a Liter, we also only need 1/10 the amount of NaCl, or 292.2 / 10, which is 29.22g. So, measure out 29.22g NaCl, and dissolve completly in a volume less than 100mL, say 80mL, then bring the final volume up to 100mL. You now have 100mL of a 5M NaCl solution.
Is this sentence grammatically correct the earth would face the destruction?
The earth would face the destruction. Pretty short though ~ Alex
How many atoms are in F2?
F2 means that there are two flourines usually a gas is a diatomic molecule. Since a fluorine molecule has an atomic mass of 18.998 that molar mass of F2 would be 18.9998 *2 = 37.996 except in molar mass the units change so instead of being g/mol it would just be grams. so 37.996 grams
What volume of the 0.91 percent with NaCl is needed to prepare 100 ml of 0.45 percent with NaCl?
Your stock is a bit more than twice as concentrated as your target concentration. Take 49.45 ml of the stock and mix with enough water to bring it up to 100 ml. Now, the foregoing, notwithstanding, you want to prepare 100 ml...The precision of that measurement is going to drive your final results. It has only one significant digit so, your adding a quantity of stock with 4 significant digits (49.48 ml) is way too precise to be relevant. This is where you say, "I need to cut the concentration by about half so, I'll take 50 ml of the stock and add 50 ml of water. Sort of like how Justin Wilson measured ingredients for cooking.
Which is correct in summer or on summer?
The correct use of this prepositional phrase would be "in summer." The words "in" and "on" are both prepositions. One would use "in" to describe being inside of or contained in the space of the subject, like "a dog is in its cage" or "I am inthe middle of something." Conversely, one uses the preposition "on" to describe being on top of or around an object, such as "I put your textbook on the desk" or "I sat on the couch." Therefore, given that a season like summer is a period of time in which you are not above but situated within, the proper preposition to use would be "in."
Would it be correct to say molecule of NaCl?
No, it would not be correct to say "molecule of NaCl" because NaCl is an ionic compound composed of sodium (Na) cations and chloride (Cl) anions held together by ionic bonds. Instead of molecules, we refer to NaCl as a formula unit since it is not made up of discrete covalently bonded molecules.
Is .9 percent of nacl different from 9 percent nacl?
Well .9 in a % would be 90%, and .09 would be 9%. So I would say yes.
Is it correct to say If you were him you would ...?
"If you were he..." is correct.
Is it correct English to say someone that....?
It would be more correct to say, someone who.
Is it gramatically correct to say why would you worry instead of being happy?
Yes, I would say that sentence would be grammatically correct.
Is it correct to say both she and you?
No, "she and you" is not correct. The correct way to phrase it would be "she and you."
Is it correct to say when midnight was rang in?
No. The correct way to say it would be, "when midnight was rung in."
Is it correct to say for your convenient?
No, I'm sorry it is not. The correct way to say it would be, "for your convenience."
Is it correct to say how can I be of your assistance?
It would be more correct to say "How can I assist you?" or "How may I help you?"
Is correct to say you are in disagree?
No. The correct way to say that you disagree with something would be "in disagreement."
Is it correct to say Tyler and I's resumes' are attached?
The correct way to say it would be: Tyler's and my resumes are attached. It would probably be simpler to just say: Our resumes are attached.
Is it correct to say I was being in London yesterday?
No, you must say I was in London yesterday.
