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Biology, 21.06.2019 16:00
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. waterās 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. thatās 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.
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Biology, 22.06.2019 08:20
In which way are mercury and venus similar? they both rotate from east to west. they are both small and rocky. they both have thick atmospheres. they both are similar to earth in structure.
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Biology, 22.06.2019 09:30
How energy flows through each level in this energy pyramid. is all the matter and energy from one level transferred to the next level?
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Biology, 22.06.2019 11:30
Which benefit of the community experience when its members have a hide level of health literacy
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Plants and plant-like organisms make their energy (glucose) from...
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