answer:The molar mass of mercury (Hg) is 200.59 g/mol. This relatively high molar mass is a key factor in mercury's distinct physical properties, such as its high density as a liquid metal.

answer:In an inequality, a closed circle (●) means that the number is equal to the given value. An open circle (○) means that the number is not equal to the given value. If the open circle is on the left side of the given value, the inequality sign will be < (less than). This means that the number is less than the given value. If the open circle is on the right side of the given value, the inequality sign will be > (greater than). This means that the number is greater than the given value. For example, the inequality x < -1 means that x is less than -1. The inequality x > -1 means that x is greater than -1. An open circle in an inequality means that the number is not equal to the given value. The inequality sign will be either < (less than) or > (greater than), depending on the position of the open circle.

answer:Net worth represents the total value of your assets, including both tangible and intangible possessions, minus any liabilities or debts. It provides a comprehensive snapshot of your financial health at a specific point in time. On the other hand, tracking daily or monthly expenses focuses on monitoring and managing your income and outflows during a given period, primarily to ensure budgeting and spending are in line with your financial goals. While expenses tracking is about cash flow management, net worth calculation gives an overall picture of your financial position.

answer:Let's set up equations to solve this problem. We have the following: 1. The total weight of the two bags is 11 lbs: [ x + y = 11 ] 2. The combined peanut content equals 36% of 11 lbs: [ 0.70x + 0.21y = 0.36 times 11 ] Now, let's solve these equations. From the peanut content equation, we have: [ 0.70x + 0.21y = 3.96 ] We can solve this system of equations by elimination. Multiply the first equation by -0.70 to eliminate x: [ -0.70x - 0.70y = -7.7 ] Adding this to the peanut content equation, we get: [ 0.21y = 3.96 - (-7.7) ] [ 0.21y = 11.66 ] Dividing both sides by 0.21 gives: [ y = frac{11.66}{0.21} approx 55.52 text{ lbs} ] Now, substitute y back into the first equation to find x: [ x + 55.52 = 11 ] [ x = 11 - 55.52 ] [ x approx -44.52 ] This result doesn't make sense as a weight. It appears there might be an error. Let's double-check the calculation for y: [ y = frac{3.96}{0.21} = frac{396}{21} = frac{132}{7} approx 18.86 text{ lbs} ] Now, let's substitute this value back into the first equation to find x: [ x + 18.86 = 11 ] [ x approx 11 - 18.86 ] [ x approx -7.86 ] Again, this value is negative, which is not possible for a weight. It seems there was an error in the calculations. The correct system of equations should be: [ 0.70x + 0.21y = 3.96 ] [ x + y = 11 ] We can eliminate x by subtracting the second equation from the first: [ 0.70x - x = 3.96 - 11 ] [ -0.30x = -7.04 ] [ x = frac{-7.04}{-0.30} approx 23.47 text{ lbs} ] Now, substitute x into the second equation to find y: [ 23.47 + y = 11 ] [ y approx 11 - 23.47 ] [ y approx -12.47 ] This result is also negative, which indicates an error in the calculations or equations. The problem might be the peanut content equation. Let's use the total peanut content instead: [ 0.70x + 0.21y = 0.36 times 11 ] [ 0.70x + 0.21y = 3.96 ] Substitute x from the total weight equation: [ 0.70(11 - y) + 0.21y = 3.96 ] [ 7.7 - 0.70y + 0.21y = 3.96 ] [ -0.49y = 3.96 - 7.7 ] [ -0.49y = -3.74 ] [ y = frac{-3.74}{-0.49} approx 7.63 text{ lbs} ] Now, substitute y back into the total weight equation to find x: [ x + 7.63 = 11 ] [ x approx 11 - 7.63 ] [ x approx 3.37 text{ lbs} ] So, Jessica should use approximately 3.37 lbs of the 70% peanut bag and 7.63 lbs of the 21% peanut bag to create the 11 lb bag with a 36% peanut content.