Four elements are shown as they appear in the periodic table 21 SC 44.956 Scandium 22 24 V Cr 47.867 50.942 51.996 Titanium Vanadium Chromium Which statement makes an accurate comparison of some of these elements? An atom of scandium contains two more protons than an atom of vanadium. B An atom of chromium contains seven more protons than an atom of scandium. An atom of titanium has fewer protons than an atom of vanadium but more protons than an atom of scandium. An atom of chromium contains four more protons than an atom of scandium but only two more prot than an atom of titanium. HELP PLEASE BENCHMARKS PLEASE ​

Exit what always affects measurement error in an experiment? a. investigator bias b. variability in nature c. instrument precision d. misreading the instrument

Every compound can be represented by a chemical formula. a chemical formula is the set of symbols showing the elements that make up a compound and their proportions. water’s chemical formula is h 2 2 o. that means a molecule of water contains two atoms of hydrogen and one atom of oxygen chemically bonded. a molecule is a group of two or more atoms bonded together. molecules can range in size from two to thousands of atoms. a molecule of a compound is the smallest unit of that compound. every molecule of water has all the physical and chemical properties of water. that’s because every molecule of water is made of the same elements in the same proportions: two hydrogen atoms and one oxygen! which of the following is a true statement? a every molecule of the same compound will have different properties. b every molecule of a compound has the same proportion of elements. c molecules can be physically separated into smaller units of a compound. d molecules cannot be represented by chemical formulae.

To maintain asepsis when administering an injection, all parts of the syringe can be handled except the: