Trộn dung dịch X chứa 0,01 mol Na + 0,0 2 mol mg2 + và x mol HCO3 - với dung dịch Y chứa y mol H + 0,01 mol NO3 trừ và 0,02 mol SO4 2 - kết thúc các phản ứng thu được v lít khí ở điều kiện tiêu chuẩn và dung dịch z chứa m gam chất tan xác định giá trị của V và M

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

The table lists the lattice energies of some compounds.compoundlattice energy (kj/mol)lif            –1,036licl            –853naf            –923kf            –821nacl            –786which statement about crystal lattice energy is  best  supported by the information in the table? the lattice energy increases as cations get smaller, as shown by lif and kf.the lattice energy increases as the cations get larger, as shown by lif and licl.the lattice energy decreases as cations get smaller, as shown by nacl and naf.the lattice energy decreases as the cations get smaller, as shown by naf and kf.