Chemistry

2. Using the following data, calculate the average atomic mass of magnesium (give your answer to the nearest.01 ) : Show all work!Isotope: Mg Percent abundance: 78.70%24Isotope: 'Mg Percent abundance: 10.13%25Isotope:Mg Percent abundance: 11.17%26
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Which of these are trends of elements as you go down a group?a.. The atomic number increases.b ...The number of electrons in the outermost shell increases.c ...The number of filled electron shells increases.d...The mass and size of the atoms increasee...The elements change from being metallic to non-metallic.
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Phosphorus and molecular oxygen combine to form diphosphorus pentoxide. Write a) the word equation b) the skeletal equation c) the reactant(s) d) the product(s) e) what type of reaction is this?
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Question 4 (4 points)Special bonds formed because of electrostatic interaction between molecules are calledA.intermolecular forcesB. intramolecular forcesC.permanent forcesD.magnetic forces
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A glass of milk occupies a volume of 50.0 mL and has a mass of 52.0. what is its density
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Which of the following d shell configurations is likely to be the best magnet?
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Freezing pointWhere would you place this property in the Venn diagram?
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Which is the larger atom S or K
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KEEP GETTING THIS WRONG PLZ HELP
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Will give Brainiest if you can answer fast
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Which among the given combinations below represent a set of isotopes?1.40 protons and 40 neutronsII. 41 protons and 39 neutrons3.42 neutrons and 48 protons4 40 protons and 42 neutronsV. 41 protons and 40 neutronsA. I, II, IIIB. III, IVC.1, IV and II, VD. 1, V and II. VE.1. V
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Plz help or I get a zero!!!!! Name the order of the planets from closest to the sun to farthest.Sun, _________________, _________________, _________________, _________________,_________________, _________________, _________________, _________________, Pluto7. Name the inner planets. Circle the correct term for inner planets: terrestrial (rocky) or gaseous 8. Name the outer planets. Circle the correct term for outer planets: terrestrial (rocky) or gaseous
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why is soaking necessary for seed germination
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On July 8th, I will be 8.51472x108 seconds old. How old will I be in years? (Assume 365 days in a year.) step by step
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First to answer both CORRECTLY gets brainleist!
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Which organelle is marked with an X?
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1.The diagram below shows the stages of a land feature being formed overtime.Stage 1Stage 2Stage 3How has the area beenreshaped over time?
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How much does a sample of C6H12O6 weigh if it contains 1.7 x 10^28 hydrogen atoms?
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What satement is true the about atomic mass?
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(GIVING BRAINLIEST)Balance each of the following chemical equations below
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is beeswax a mineral, a rock or neither
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2) A student was working on an investigation to measure the relative activityof an enzyme at various pH values. He collected the following data:pH 2, enzyme activity 10; pH 8, enzyme activity 50;pH 12, enzyme activity 10; pH 4, enzyme activity 20;pH 6, enzyme activity 40; pH 10, enzyme activity 40
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How can we gather more evidence about weather lava or water formed the channel on Mars
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Urgent please help!! Which of these is a chemical property of a substance? A) texture B) ductility C) reactivity D) conductivity
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