Home / Questions / The correct symbol for the ion formed by nitrogen is N2 B N3 N3 D N2 E N
The correct symbol for the ion formed by nitrogen is:
A) N2? B) N3? C) N3+ D) N2+ E) N?
92. The correct symbol for the ion formed by sodium is:
A) Na+ B) S2? C) Na? D) S2+ E) K+
93. The correct symbol for the ion formed by potassium is:
A) P3? B) P3+ C) K+ D) K? E) P2?
94. Calcium citrate is a compound found in some calcium supplement medications. The calcium in this compound consists of ions containing 18 electrons. What is the charge of the calcium ions?
A) –2 B) –1 C) +1 D) +2 E) +3
95. Calculate the relative atomic mass of speedium (a fictional element) which has three isotopes with the following masses and abundances:
45Sp 44.99 amu 30.0%
47Sp 46.99 amu 60.0%
48Sp 48.00 amu 10.0%
A) 45.0 amu B) 46.5 amu C) 46.7 amu D) 47.0 amu E) 140 amu
96. Antoine Lavoisier's experiments showed that the mass of the products of a chemical reaction equals the mass of the reacting substances.
97. John Dalton's experimental results led to the law of conservation of mass.
98. When wood is burned, the ashes weigh less than the original wood, so this is a violation of the law of conservation of mass.
99. Dalton's atomic theory says that a chemical reaction is a rearrangement of atoms into one or more different chemical substances.
100. All of the statements in Dalton's original atomic theory are still considered to be correct today.
Feb 15 2020 View more View Less
An object moves along a path defined by r(t)=3ti+4tj. Find v(t), a(t), T(t) and N(t). What is form of path? Is the speed of the object changing?
Apr 28 2021Evaluate the personnel issues presented in the vignette using legal reasoning. What ethical issues exist? As an education leader, how would you proceed if this individual...
Mar 17 2020ACCT 3110E3-8 (Adjusting Entries) Andy Roddick is the new owner of Ace Computer Services. At the end of August 2014, his first month of ownership, Roddick is trying to pr...
May 14 2020Haley Company estimates its sales at 100,000 units in the first quarter and that sales will increase by 10,000 units each quarter over the year. They have, and desire, a...
Jun 24 2020As you learned in the FAQs, English is a wonderfully flexible language, and "verbing" is common. For example, the noun trend became a verb inStocks are trending upward, a...
Jun 28 2021Draw a Lewis structure for C2H3Cl. Show all unshared electron pairs. None of the atoms bears a formal charge, and all atoms have octets (except for hydrogen atoms, which ...
May 19 2021After submitting the high bid at a foreclosure sale, David Simard entered into a contract to purchase real property in Maryland for $192,000. Simard defaulted (failed to ...
Aug 19 2021Add necessary commas to the following sentences. If a sentence requires no punctuation, write C next to it.These payments provided there is no interruption in profits sho...
Jul 09 2021Sequence and SeriesDescribe the difference between
Aug 08 2021- 16 Al Maha Company is specialized in mangoes distribution in the city of Muscat. Sales are 420 units per month. It costs OR 10 to make and receive an order and holding ...
Apr 29 2021