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An insulated rod of length has its ends A and B maintained at O^ C and 100 degrees * C respectively until steady state conditions prevailFind the steady -state temperature of the rod
how many grams of lactose must be added to 655 grams of water in order to prepare a solution with a percent mass concentration of 10%?
Create the following matrix by assigning vectors with constant spacing to the rows (use the linspace command for the third row). Do not type individual elements explicitly.
A =
1.0000 2.0000 3.0000 4.0000 5.0000 6.0000
7.0000 6.0000 5.0000 4.0000 3.0000 2.0000
2.0000 3.1667 4.3333 5.5000 6.6667 9.0000
1.What is the vapor pressure of the pure solvent if the vapor pressure of a solution of 15g sucrose (C12H22O11) in 100g of ethanol (C2H5OH) is 58 mmHg?
2.A solution prepared by adding 10g of an unknown non-volatile, non-electrolyte solute to 150 g of water. The Boiling point of the solution is elevated by 0.433 0C above the normal boiling point of the solvent. What is the molar mass of the unknown substance?
3.You add 1 kg of ethylene glycol (C2H6O2) antifreeze to 4500g of H2O in your car’s radiator. What would be the freezing point of the solution?
4.How many grams of Lactic acid (C6H10O5) should be dissolved in 650g of cyclohexane (C6H12) to raise the boiling point to 84.910C? The normal boiling point of cyclohexane is 810C and its molal boiling point is 2.75 0C/m.
5.The osmotic pressure of 250mL of an aqueous solution containing 0.150g of the enzyme lysozyme is found to be 0.0013atm at 24.850 Calculate the molar mass of lysozyme.
Hydrogen peroxide (H2O2) is a powerful oxidizing agent used in concentrated solution in rocket fuels and in diluted solutions is hair bleach. An Aqueous solution of 25% (m/m) has a density of 1.05 g/ml. Calculate the concentration in terms of:
a. Mole Fraction of H2O2
b. Molarity
An ethanol solution is prepared by dissolving 15 mL of ethanol (C2H5OH) (density: 0.850 g/ml) in a sufficient volume of water to produce 120 mL of solution with a density of 0.980 g/mL. What is the concentration of ethanol in this solution expressed as:
a. Volume percent
b. Mass percent
c. Mass/volume percent
d. Mole fraction of Ethanol
e. Molarity
f. Molality
the goal of this code is to quickly get you off the ground with the array method map().
input
the input will be single line containing an array myArray.
output
the output will be single line containing the newArray.
constaints
Strings should be given in quotes
input1
[ 1, 'David' 10, {'points':97}, 25, 'alphabet', true]
output1
[2, 'string' 20, 'object', 50, 'string', 'boolean']
"use strict";
process.stdin.resume();
process.stdin.setEncoding("utf-8");
let inputString = "";
let currentLine = 0;
process.stdin.on("data", (inputStdin) => {
inputString += inputStdin;
});
process.stdin.on("end", (_) => {
inputString = inputString.trim().split("\n").map((str) => str.trim());
main();
});
function readLine() {
return inputString[currentLine++];
}
function main() {
const myArray = JSON.parse(readLine().replace(/'/g, '"'));
// Write your code here
}
1.How many mL of 0.250 M barium nitrate are required to precipitate as barium sulfate all the sulfate ions from 50 mL of 0.350 M aluminum sulfate?
3 Ba(NO3)2 (aq) + Al2(SO4)3 (aq) --> 3 BaSO4 (s) + 2 Al(NO3)3 (aq)
- 2.5 mL of nitric acid, HNO3, are required to react with 50 mL of a 1.25 M Barium hydroxide, Ba(OH)2 solution:
2 HNO3 (aq) + Ba(OH)2 (aq) --> 2 H2O (aq) + Ba(NO3)2 (aq)
Determine the concentration (Molarity) of the nitric acid solution (HNO3).
Bob a builder has come to you to build a program for his business. He needs to determine the square footage of a room in order to buy materials and calculate costs. Bob charges $125 per square metre. The program is going to ask the user to enter the name of a room. It will then ask for the width and length of the room (in meters) to be built. The program will calculate the room area and use this information to generate an approximate cost. Your program will display the room, the total area and the approximate cost to the screen.
Using Pseudocode, develop Javascript for this problem.
Solve the following system of six linear equations on MatLAB:
2a-4b+5c-3.5d +1.8 e + 4 f= 52.52
-1.5 a + 3b +4c-d-2e +5f= -21.1
5a+b-6c+3d -2e +2 f = -27.6
1.2a 2b +3c+4d-e+4f=9.16
4a+b-2c-3d-4e+1.5 f= - 17.9
3a+b-c+4d-2e-4 f= -16.2
