Using atomic notation indicate the isotope having 26p+, 32 n^0 and 26e^- _32^58

Question

Using atomic notation indicate the isotope having 26p+, 32 n^0 and 26e^- _32^58 Fe _26^32 S _26^32 Fe _26^32 Fe _26^58 Fe _32^58 s What is the molar mass of aspartic acid, C_4O_4H_7N? 43 g/mol 197 g/mol 70 g/mol 133 g/mol What is the ionic charge for the lead ion in Pbo? zero 1+ 2^+ 4^- What is the chemical formula for cobalt(II) bromide? Co_2 Br Co2Br_2 Co_2Br_2 Co_2Br_3 A sample of propane gas occupies 625 cm^3 at 20.0 degree C and 750 torr. What is the final volume in centimeters at -80.0 degree C and 750 torr? 519 cm^3 949 cm^3 156 cm^3 412 cm^3 2500 cm^3 Based on electronegativity differences, which of the following is most likely to be ionic? SCl_2 Br_2 PH_3 CaCl_2 Cl_4 How many moles of oxygen gas react with 1.00 mol NO? 0.250 mol 0.500 mol 1.00 mol 2.00 mol

Explanation / Answer

(30)

26 p+ , 32 n0 and 26 e-

atomic mass = proton + neutron = 32 +26 = 58 and atomic number is 26

answer is d

5826Fe

(31)

C4H7NO4

Molar mass of Aspartic acid = 12 x 4 + 1 x 7 + 1 x 14 + 16 x 4 = 133 g/mol

so answer id d

(32)

Ionic charge on O is 2-

so Ionic charge on Pb = 2+

so answer is c

(33)

Chemical formula for cobalt(II) bromide

CoBr2 , CoBr2.6H2O , CoBr2.2H2O

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