Chemistry

Which one of the following statements about the carbon phosphorus and nitrogen cycles is true ? a. The major source of carbon used by plants is the soil b. The major source of nitrogen used by plants is the air. c. Phosphorus has no atmospheric component. d. Bacteria drive the phosphorus cycle.
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The following diagram represents the potential energy for the reaction:The curves represent two possible reaction paths for the decomposition of ammonia, NH3. One can correctly conclude from the graph that the largest activation energy shown for the decomposition of NH3 corresponds to which labeled interval?CEABD
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What is the molar mass of the following compound: C1H3P2
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If a pure compound is distilled, the head temperature will be____compared to the pot temperature. If however, an impurity is present that strongly interacts with the liquid molecules, then the____has to be increased in order to increase the vapor pressure of the liquid, ultimately to____atmospheric pressure, allowing the liquid to boil. Thus, at boiling point, the pot temperature will be____from that of the head temperature.
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Chemical energy is released when bonds blank in a chemical reaction
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how heart attacks and Strokes caused by cholesterol
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A substance that dissolves in a solvent is said to be a(n)A. immiscibleB. miscibleC. solubleD. insoluble
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Generally, atmospheric pressure decreases by 1.00 mmHg asaltitude increases 10.0 m. If altitude increases 100. m, howmuch would the atmospheric pressure change in atm?
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Can some someone plz help
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PLEASE HELP: 60 POINTSSelect all that apply!The emission of a Beta particle has the effect of:a change in mass of an electron emitted from the nucleusdecreasing mass by one unitincreasing mass by one unitadding a proton to the nucleusconverting 1 neutron to 1 electron and 1 proton
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ILL GIVE 100 POINTS!!!HELP!! THIS IS FOR CHEM!!an object acted upon by an unbalanced force will accelerate in the direction of the force is newtons what law?1:second law2:first law3:third law
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why do you think season will impact the size of a rabbit population
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x=2 and y=3 find the value of 3x + y 3x - 4 solve this please ty
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What causes heat or the transfer of energy from one object to another
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6. Three ice cubes are placed inside a glass of hot chocolate. Which of the following bestexplains the heat transfer occurring inside the glass?bat abanslate ITS NUMBER 6!!! PLZZ HELP ASAP!!!
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Balance equation mg3n2+h2so4=mgso4+(nh4)2
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Oxygen gas was produced in a reaction and collected over water. A 136.1 mL mL sample of gas was collected over water at 25C and 1.06 atm. The vapor pressure of water is 23.76 mmHg at 25C. Find the mass of ocygen gas collected in a reaction and collected over water. A 136.1 mL sample of gas was collected over water at 25C and 1.06 atm. The vapor pressure of water is 23.76 mmHg at 25C. Find the mass of oxygen gas collected.
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When you watch a sunset, is the Sun really moving across the sky? What's happening?(Science)
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What enzyme catalyses the reaction of PRPP transfer to hypoxanthine withformation of IMP?
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2. Combine lead (II) nitrate and potassium iodide solutions.Pb(NO3)2+ Kl 2. Combine lead (II) nitrate and potassium iodide solutions.Pb(NO3)2+ Kl 3. Combine magnesium metal and hydrochloric acid solution.Mg + HCl 4. Electrolysis (splitting) of water. H2O 5. Burning magnesium.Mg + O2
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What is a pollinator?A) an animal that transfers pollen from flower to flowerB) a colorful flower that attracts insectsC) an insect that makes pollenD) a flower that produces fruit for animals to eatWill mark brainliest
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Calculate the concentration:2a) 45g of sodium hydroxide in 3dm3 of solution.2b) 0.256g of sodium chloride in 500cm3 of solution.
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I need help with this chem problem!
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Which type of bonding forms due to electrical attractions between oppositely charged elements
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