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848 Questions
Given that one mole of Na+Cl− has a mass of 58.5 g, how many grams of Na+Cl− are dissolved in a solution of 0.1 mole per litre
Medicine
2022-09-10
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30
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411
Which item from the following list is an electrolyte
Medicine
2022-09-10
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195
Which of the following properties is least likely to be possessed by a covalent, molecular substance
Medicine
2022-09-10
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198
The element nitrogen exists as molecules, N2. Which of the following representations of the bonding in a molecule of nitrogen is correct
Medicine
2022-09-10
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270
Which of the following statements concerning isotopes is FALSE
Medicine
2022-09-09
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157
Which of the following atoms normally forms ions having a single, positive charge
Medicine
2022-09-09
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204
Some atoms of iodine, I, contain 53 protons and 78 neutrons in their nuclei. A correct symbol for these atoms would be:
Medicine
2022-09-09
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196
What is the atomic number of the element occupying Group VA and Period 4 of the Periodic Table
Medicine
2022-09-09
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222
Two atoms have the same mass number but different atomic numbers. Which of the following statements concerning these atoms is TRUE
Medicine
2022-09-09
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214
Which of the following is the name of a subatomic particle
Medicine
2022-09-09
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213
In which of the following sequences are particles listed in order of increasing size from left to right
Medicine
2022-09-09
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155
Which of the following statements about atoms is FALSE
Medicine
2022-09-09
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165
A certain pure substance, A, when heated is changed into two quite different pure substances, C and D. Which of the following statements must be true?
Medicine
2022-09-09
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336
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848
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