X2o

Question: What gives oxides with the formula X2O? What gives oxides with the formula X2O? a. alkali metals b. alkaline earth metals c. metalloids d. halogens e. rare earths I thought the answer would be alkali metals, but my review book says the answer is B. alkaline earth metals. Can someone please explain why? Thank you!!!

Answer: alkaline earth metals give oxides XO ( CaO , MgO ...) alkali metals give oxides X2O ( Li2O , K2O....)

Question: how much concrete do i need to poor a footing 261'x2o''x12''.?

Answer: In the real world where the measurements tend to fluctuate, I'd order a minimum of 16.5 yards. The formulas are correct, but I deal with it every day. Better to have a little too much than not enough. Better yet, pour out the 9-10 yard 1st load and calculate the balance (depending on the concrete yards turn around time to avoid a cold joint between the 2 pours).

Question: Has anyone had experience with xoomaworldwide - X2O? Xoomaworldwide sells a drink that is called X2O. I was mostly interested in the drink and the price seems reasonable. However, since not getting the info I needed from the referrer, I did my own research and found some bad reports. Does anyone have any personal experience with the drink sachets themselves or have been involved with the business end of it?

Answer: I was involved with the business end of it but only found that it was like most everything else on the internet, It was not what they had promised and the money certainly wasn't there. I worked hard for them and I never received anything but I was stuck with the drink that no one was interested in and some were even scared to drink it, My husband tried to drink it but was very disappointed and ended up pouring it down the drain. I can honestly say that my director did not contact me once during the entire time that I was associated with them, I was stuck with the product that I had bought and I had even enlisted 3 people under me and was never paid., When I tried to get out of the business they would not even contact me and I was being billed monthly for my enrollment and not getting any benefits from them as they had promised, well I finally emailed them with my lawyers letter head and I threatened them and only then did I get out of the so called business, I will never try to start a home business from the internet again unless it is E- Bay.

Question: Given the ionic formula, what is the charge of X? Be sure to include (+) or (-). X2O? this is basically it, i've been stuck on this question forever, and i have no idea how to do it. please 5 stars!

Answer: The charge of X is +1. You can tell because when oxygen becomes ionized, it has a -2 charge, such as in water - hydrogen has a +1 charge while oxygen has a -2 charge,and therefore you need two hydrogens to balance out the negative charge of the oxygen. You're question is essentially the same example.

Question: whats the charge of ion X FOR THE FORMULA X2O?

Answer: +1

Question: What is the molar mass of a ficticious element X if 187.3 g of X are required to react with 26.9 g of O2 to pr? What is the molar mass of a ficticious element X if 187.3 g of X are required to react with 26.9 g of O2 to produce X2O? How do I do this?

Answer: 4 X + O2 >> 2 X2O moles O2 = 25.9 g/ 32 g/mol=0.809 moles X = 4 x 0.809= 3.24 Molar mass = 187.3 / 3.24 = 57.8 g/mol

Question: Where can I buy X2O - Xtreme Oxygen? tea packet for water

Answer: I know of several sites. Shop each of these and compare prices. It changes sometimes as to which one is the cheapest. o2infusion.com oxygenexperience.net o2planet.com

Question: What is X2o? chemistry homework

Answer: No element uses the letter X. Could be numerous things (assuming that the X is an unknown). Need more info.

Question: Calculate the mass of the anhydrous alum and the mass of the water that was given off.? I was also asked to find the moles of alum and water. and to calculate the ratio of moles of water to the moles of alum and give the calculated formula of KAl(SO4)2 * X2O where X is the ratio of moles of water to moles of alum. in my lab the mass of the crushes alum crystal was 0.490g the melting point of alum is 93 degrees Celsius the melting range i observed was 91-93 degrees Celsius the mass of the cruicible and lib was 21.700g the mass of the crystal was 1.999g the mass of the cruicible and alum was 22.746 therefore the mass of alum was 22.746-21.700=1.046g using this information can you please help me answer my question :]

Answer: the info you provided shows: the mass of the crystal was 1.999g the mass of anhydrous alum was 1.046g (ANSWER #1) this implies the residue 1.046 grams of KAl(SO4)2 was left over, after 0.953 grams of water, (ANSWER #2), was heated off ------------------- 1.046 grams of KAl(SO4)2 @ 258grams / mole = 0.00405 moles of KAl(SO4)2 ratios with 0.953 grams of water @18 grams / mole = 0.0529 moles of water -------------------- 0.00405 moles of KAl(SO4)2 / 0.00405 = 1 moles 0.0529 moles of water / 0.00405 = 13 moles water ---------------- this implies that the original formula was KAl(SO4)2·13(H2O) which is close to the right answer of KAl(SO4)2·12(H2O) http://en.wikipedia.org/wiki/Potassium_alum

Question: How much should i sell my ps2 for?(1st generation)? with games -SanAndreas -nba street -espn 2k5 -mvp baseball 2004 -burnout revenge -jet X2O -50 cent bulletproof -true crimes streets of l.a. -hight heat 04

Answer: $60-70 BTW those are some good games

Question: Which is the mystery element? A compound of X and oxygen has the formula X2O, which element would most likely represent X. Fe, Zn, Ag,or Sn Please give an explanation as well.

Answer: In X2O, X has an oxidation state of +1. Fe may have +2 and +3 Zn may have +2 Ag may have +1 Sn may have +2 and +4

Question: The atomic molar mass of a hypothetical element X is 100 u. It is found that the 50.0 g of X combines with? 32.0 g of oxygen. What is the simplest formula for the oxide of X? Atomic Molar Mass O = 16.0 g/ mol A. X2O B. XO2 C. X2O3 D. XO4 Please provide explanation. Thank you. Praise God!!!

Answer: With the molar masses and respective masses of O and X, you can convert to mole ratio to determine the empirical formula: 50 g X * (1mol/100 g) = 0.5 moles X 32 g O * (1 mol/16 g) = 2 moles of O This gives you the mole-mole ratio of 0.5 X to 2 O, or, simplified, 1 to 4. This is represented in the equation of compound (D) XO4, with one molecule of X per 4 molecules of O. I hope that's the correct math, but the concept is there.

Question: If X represents an elements of Group 1, The formula of its oxide would be? A) XO B) X2O3 C) XO2 D) X2O

Answer: The Group 1 elements have one valence electron. So, it has one extra from becoming stable. Oxygen has 6 valence electrons, so it needs two more electrons to have a stable orbit. Group 1: 1 extra Oxygen: 2 needed Can you work it out from here? How many X's do you need for an O?

Question: If 0.600 mol of X is found to react completely with 4.8 g of O2 gas, what is the empirical formula of the...? resultant oxide? I know the answer is X2O. However, I believed it was X40 (I divided 4.8 g by 32 g as opposed to 16 because oxygen is diatomic). Explanation?

Answer: The empirical formula is the lowest whole number ratio of ATOMS in a molecule. If it completly reacts to form only one product then all the O from the O2 is now in your oxide. So you need to consider the actual moles of individual O atoms present in the oxide to get the empirical formula. moles O = 4.8 g / 16.00 = 0.30 mol moles X = 0.600 mol X2O 4X + O2 ------> 2X2O You do start with 0.15 mol of O2, but the 0.15 mol of O2 provides a total of 0.30 moles of O atoms.

Question: appropriate element in this equation? In the compound X2O the element X could be 1)sodium. 2)silicon. 3)magnesium. 4)helium.

Answer: The correct is a first. (Sodium).

Question: Which Elements form an oxide (X)2o? the oxide im looking for was x2o, (x is in place of an element) i need the elements that form that oxide

Answer: well, many elements can form oxide with a formula X2O. most people tell you Group IA elements that can form ions with 1+ charge. so, Na2O, K2O, Li2O, etc. transition metals do also. e.g. Cu2O, Ag2O but there are more, nonmetals can form that. although we don't name water oxide, the formula is ok. so, H2O, Cl2O.