Magnesium is an essential plant nutrient as it is necessary component of chlorophyll. Magnesium is added to fertilizers in the form of magnesium nitrate, Mg(NO3)2(s), in order to maintain a soil concentration of 60.0 ppm magnesium. The mass of magnesium in 20.0 kg of soil is:

Hydrogen cyanide, HCN(g), is used in the production of nylon. It is prepared at 1473 K by the reaction represented by the following balanced equation. 2 CH4(g) + 2 NH3(g) + 3 O2(g) → 2 HCN(g) + 6 H2O(g)Assuming conditions of constant temperature and pressure, the volume of O2(g) that would be required to produce 2.50 L of HCN(g) is:

In Section 1.3, what does the text say law provides to private enterprise?

The Mg(NO3)2(aq), when present in groundwater, can react with compounds such as tin(II) fluoride, SnF2(aq), found in improperly disposed man-made garbage. Chemical Species 1        Mg2+(aq)                      5          Sn2+(aq) 2          NO3−(aq)                   6              F−(aq) 3        Mg(NO3)2(s)                 7    Sn(NO3)2(s) 4        MgF2(s)                        8            SnF2(s) Using the numbers of the chemical species above, identify the species that are involved in the net ionic equation for the reaction between Mg(NO3)2(aq) and SnF2(aq). Net Ionic Equation:  *note: pay attention to the given coefficient  for proper order                                           +             2                         →                                                (Record as the               (Record as the                  (Record as the                                  first digit)                    second digit)                     third digit)                Answer should be recorded as 3 digits (Ex. 123) 

Magnesium is an essential plant nutrient as it is necessary component of chlorophyll. Magnesium is added to fertilizers in the form of magnesium nitrate, Mg(NO3)2(s), in order to maintain a soil concentration of 60.0 ppm magnesium.   The equation that represents the dissociation of Mg(NO3)2(s) is:

Please answer the following question on a blank piece of paper so you can show your work. A student was given a sample of 0.100 mol/L of an unknown strong acid. The student performed several tests on samples of the acid, and the data are summarized in the table below. Results of Tests done on Unknown Acid Test Observation Addition of methyl orange Solution turns red Addition of thymol blue Solution turns red Addition of cresol red Solution turns yellow Addition of methyl violet Solution turns green 1. Using the tests done with the indicators, identify the pH of the unknown acid. (2 marks)

What does a “blue-pencilling” clause invite a court to do?

Please answer this question on a blank piece of paper, ensuring to show all of your work On December 21, 2020, Saturn and Jupiter aligned so closely in the night sky that they almost appeared to collide from our vantage point on Earth, creating a single radiant point of light. The last time this alignment, known as the Great Conjunction, was seen on Earth was March 4, 1226. The conditions on the surface of these two planets are very different than those on Earth. On Saturn, atmospheric pressure is 0.987 atm and the average temperature is 135K, and on Jupiter, the pressure at the same altitude is 10.0 kPa and 110 K.          a.         What is the density of CO2(g) on Jupiter? (3 marks)          b.       What is the volume of 4.25 g of CO2(g) on Saturn? (4marks)  

Please complete this question on a blank piece of paper, ensuring to show all of your work. Historically, lead(II) nitrate was used to prepare pigments such as chrome yellow, PbCrO4(s). To prepare the pigment, aqueous solutions of lead(II) nitrate were reacted with aqueous solutions containing sodium chromate as represented by the following balanced equation.  Pb(NO3)2(aq) + Na2CrO4(aq) → PbCrO4(s) + 2 NaNO3(aq)   NOTE: due to the toxic nature of lead compounds, pigments no longer contain lead. a. What mass of chrome yellow, PbCrO4(s), could be prepared by adding a solution containing 200.g of lead(II) nitrate to a solution containing 150.g of sodium chromate? (6 marks) b. What mass of excess reagent will remain? (4 marks)

When sulfur, S(s), reacts with sodium hydroxide, NaOH(aq), in hot water, the reaction that occurs can be represented by the following balanced equation.  4 S(s)  +  6 NaOH(aq) → Na2S2O3(aq)  +  2 Na2S(aq) + 3 H2O(l) The maximum amount of Na2S(aq) produced by the reaction of 10.0 mol of S(s) with 10.0 mol of NaOH(aq) is ______ mol.Answer should be recorded as 3 digits (Ex. 1.23) – Do Not include Units