On a balance, you have beakers of AgNO3 solution and NaCl solution. When mixed,

Question

On a balance, you have beakers of AgNO3 solution and NaCl solution. When mixed, they will form AgCl(s) What will happen to the mass of the new mixture? o There will be no reaction or the reaction will not go to completion. The mass of the new mixture will stay the same. O The mass of the new mixture will increase. O The mass of the new mixture will decrease Two iron oxides samples are given to you where one is red and the other is black. You perform a chemical analysis and you find that the red sample has a Fe/O mass ratio of 2.327 and the black has a Fe/o mass ratio of 3.491. You suspect the red sample is simple rust or Fe2o3 What is the chemical formula for the black sample? O FeO O FeO. O Fe3O4 O FeOOH Specify the number of protons, neutrons, and electrons in the neutral atom bromine-80. Enter your answers as integers separated by Commas, protons, neutrons electrons The ion pa has protons and electrons Enter your answers as integers separated by a Comma What isotope has 14 protons and 14 neutrons? Enter the name of the element followed by a hyphen and the mass number (e.g., uranium-234 Which element does X represent in the following EX? expression:

Explanation / Answer

a)

the mass will increase because the new mix will have more Ag

c)

Bromine

: 35 electrons, 45 neutrons, 35 protons.

f)

is the magnesium because it has 12 like his atomic number and 25 like his mass atomic

e)

Silicium (Si)

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