
Suppose you have two samples that are equal in weight, 14.8 g Sr and 14.8 g...
Suppose you have two samples that are equal in weight, 14.8 g Ti and 14.8 g Cr, 0, Calculate the number of moles of each substance. Cr,0,-
Given the formula C33H35FN2O5, please do the following: 1. calculate the g/mol molecular weight 2. express a 40 milligram portion of this substance in terms of the g/mol molecular weight calculated in step 1 above (that is, 40 milligram is equal to how much g/mol molecular weight) Please show each step of your solution. Thank you.
Suppose independent random samples drawn from two normal populations, assumed to have equal variance, result in the following summary statistics: n1 =15.62. Calculate a pooled estimate of the common standard deviation of the two populations. 16, s1 17.1, n2 19, s2 3 pt(s)] Submit Answer Tries 0/3
You want to store 150. g of gas in a 14.8-L tank at room temperature (25 °C). Calculate the pressure the gas would have using the ideal gas law and the van der Waals equation. (For , co2 a= 3.59L/mol and b=0.0427 L/mol .)
1. The empirical formula of an unknown substance is HSO4. If the molecular weight of the substance 194 glmol, what is its molecular formula? 2. How many grams of ammonia are produced when 32g of nitrogen react with excess hydrogen? N2 3H23 2NH, 3. The empirical formula of an unknown substance is determined to be CH2. What is its molecular formula if the molecular weight is 84 gmole? 4. Nicotine has an empirical formula of CsHTN and a molecular weight...
Five calcite, Caco, (MM 100.085 g/mol), samples of equal mass have a total mass of 12.1 t0.1 g. What is the average mass and absolute uncertainty of calcium in each sample? Assume that the relative uncertainties in atomic mass are small compared the uncertainty of the total mass. average mass: absolute uncertainty: t mg
A 0.0593−mol sample of a nutrient substance, with a formula weight of 114 g/mol, is burned in a bomb calorimeter containing 4.73 × 102 g H2O. Given that the fuel value is 4.80 ×10−1 in nutritional Cal when the temperature of the water is increased by 6.86°C, calculate the fuel value in kJ. Enter your answer in scientific notation. Be sure to answer all parts.
Suppose I lay before you 8.0 gram samples each of Mg, Cs, C, and Hg. Which of these samples would contain the greatest number of moles?
need help calculating mmol i have the molecular weight in (g/mol) i have the amount in volume (uL) MW(g/mol)- 112.22 volume (uL)- 400 im confused on how to calculate for mmol from those two set of information.
suppose you have an unknown sample containing Fe^2+, and you
titrate it with KMnO4 standard solution. Calculate the percent of
Fe in your sample.
equation: MnO4- + 5Fe^2+ + 8H^+ --> Mn^2+ + 5Fe^3+ +
4H2O
Suppose you have an unknown sample containing Feat, and you titrate it with a KMnO4 standard solution. Calculate the percentage of Fe in your sample. Equation: MnO(+5Fe2+ + 8H - Mn2+ + 5Fe3+ + 4H20 Data 0.08124M 2.49g Molarity of the KMnO4 standard solution:...