Х Determine the number of grams of MgBr2 in 2.5 x 1019 molecules of MgBr2. (Atomic
weight of Mg = 24.31 and Br = 79.91).
=
Note: 10^-2 means 10-2
O 4.6 x 10^21
O 7.6 x 10^-3 g
O 8.2 x 10^40
0 4.2 x 10^-5
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Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.