2016年5月7日 · Calcium nitrate The name of the compound Ca(NO_3)_2 is Calcium nitrate. An ionic compound, is a compound that contains a metal element in its formula unit. Metal elements are found to the left of the stairs in a periodic table ( refer to the periodic table at the end of this answer ). This is an ionic compound that is named in general as follows: The cation (positive …

2018年2月28日 · Try 2 HNO3, which gives 6 O atoms, and I had 2 from the Ca(OH)2 already, so I have a total of 8 O atoms now. Right side, you need 8 total, but only have 7. Since H20 has only one O atom, if you place a 2 in front of the H20, you have 2 O atoms now.

2017年12月2日 · NO_3 has 3 atoms of oxygen in it per molecule (indicated by the subscript of 3) and (NO_3)_2 means you have 2 NO_3 molecules, meaning you double the subscript to get 6 oxygen atoms. Following the same rules, there is 1 atom of nitrogen in 1 NO_3 molecule (subscripts of 1 are not given) and 2 atoms of nitrogen in 2 NO_3 molecules.

2016年5月16日 · "745 mmHg" The idea here is that you need to find the number of moles of particles of solute present in your solution. Knowing this will allow you to find the mole fraction of the solvent, which will then get you the vapor pressure of the solution. Notice that a formula unit of calcium nitrate, "Ca"("NO"_3)_2, contains one mole of calcium cations, 1 xx "Ca"^(2+) two …

2016年9月1日 · A sample of calcium nitrate, #Ca(NO_3)_2#, with a formula weight of 164 g/mol, has #5.00 x 10^25# atoms of oxygen.

2017年9月17日 · The molar mass of #"Ca(NO"_3)_2# is calculated by multiplying the molar mass of each element by its subscript (remember to multiply the subscripts for #"NO"_3"# by #2#) and adding the results. The molar mass of an element is its atomic weight on the periodic table in grams/mole, or g/mol.

2021年5月30日 · b. is the correct answer. The balanced equation shows that 2 moles of Cu(NO 3) 2 are required for each mole of Ca used. As 1.5 moles of Ca is used, there would have to be 3.0 moles of Cu, but there are only 2 moles of Cu(NO 3) 2.

2017年7月9日 · Here's what I get. > a) Type of reaction The chemical equation is "CaO" + "2HNO"_3 → "Ca"("NO"_3)_2 + 2"H"_2"O" In one sense, this is a double displacement reaction, because "Ca" and "H" are changing partners with "O" and "NO"_3. In another sense, this is an acid-base neutralization reaction, because the base (calcium oxide) is reacting with the acid …

2020年5月5日 · Ca(NO 3) 2 (aq) + 2HCl(aq) ==> CaCl 2 (aq) + 2HNO 3 (aq) This reaction DOES NOT OCCUR because no precipitate, gas or liquid is formed as a product. All species are fully dissociated and soluble so there is no reaction. However, if you want to solve the problem as an "exercise" then here goes: Ca(NO 3) 2 + 2HCl ==> CaCl 2 + 2HNO 3

2016年2月1日 · Possibly no. The idea here is that calcium nitrate, "Ca"("NO"_3)_2, and sodium hydroxide, "NaOH", will react to form calcium hydroxide, an insoluble solid, if and only if they are mixed in the appropriate concentrations.