Straighterline CHEM101 Final Exam| Answered 100% Correctly| Already Graded Passed| Latest 2025

Straighterline CHEM101 Final Exam| Answered 100% Correctly| Already Graded Passed| Latest 2025 Mass Number total number of neutrons and protons in an atom; # protons + # electrons p Most nonmetallic elements are found in which block of the periodic table? Positive matter is concentrated in the central core Ernest Rutherford disproved J.J. Thomson's plum-pudding model of the atom by showing that... Potassium Plants use up copious amounts of which alkali metal, preventing most of it from being washed out to sea? 2:1:1:2 What is the ratio of reactants and products in the chemical equation? __NaOH + __H2SO4 -- __Na2SO4 + __H2O the number of ATOMS in 12g of Carbon-12 1 g = 6.022 × 1023 amu What is Avogadro's number? Mg What is the reducing agent in the following equation? Mg(s) + 2HCl(aq) - MgCl2(aq) + H2(g) (s) (l) (g) Which arrangement accurately describes the standard entropy values at different phases? 2, 8, 20, 50, 82 or 126 protons What are the most stable isotopes? S = oxidized N = reduced What element has been oxidized and what element has been reduced? 3CuS + 8HNO3 -- 3CuSO4 + 8NO + 4H2O multiply the atomic mass (grams) by the number of moles How do you convert from moles to grams? Divide the total number of grams by the atomic mass (grams) of 1 mole How do you convert from grams to moles? Mass measure of the amount of matter Compound made from atoms of 2+ elements that are chemically bonded; cannot be separated into simpler substances by any physical process; can be separated by a chemical reaction Solid