Search & Filtering
Devise a procedure for selectively precipitating the following ions from each other in a common solution. Record your table, the order the solutions must be added and the precipitate that forms at each step. (4 each)
a. Cl- and PO4 3-
b. Ca2+ and Ag+
c. Cu2+ and Ca2+
A house with 200-m2 floor space is to be heated with geothermal water flowing through
pipes laid in the ground under the floor. The walls of the house are 4 m high, and there are 10
single-paned windows in the house that are 1.2 m wide and 1.8 m high. The house has R-19
(in h · ft² · °F/Btu) insulation in the walls and R-30 on the ceiling. The floor temperature is
not to exceed 40°C. Hot geothermal water is available at 90°C, and the inner and outer
diameter of the pipes to be used are 2.4 cm and 3.0 cm. Design such a heating system for this
house in your area.
Avoid radiation (assume)
Find the area between 𝑧 = 0 and each of the following.(used z-table).
1. z = 0.85
2. z = 1.27
3. z = 2.86
4. z = −1.05
5. z = −2.96
A car 2000kg tied to the rope of 15m whose end is located at the center. If the car is moving at the rate of 8 m/s. Calculate the centripetal force acting on it?
Indivisible Numbers(using nested for loops)
fin
number of positive integers K <= N such that K is not
for
4
5
You are given a positive integer N Your task is to find the divisible by any of the following numbers 2, 3, 4, 5, 6, 7, 8, 9, 10
6 prin
Custa
Input
The first line of input is an integer N
Output
The output should be an integer representing the number of positive integers satisfying the above condition.
Explanation
In the given sample input
N = 11
1 is not divisible by any of 2, 3, 4, 5, 6, 7, 8, 9, 10
2 is divisible by
2
3 is divisible by 3
11 is not divisible by any of 2, 3, 4, 5, 6, 7, 8, 9, 10
There are two numbers that are not divisible by 2, 3, 4, 5, 6, 7,
8, 9, 10
So the count is 2.
So, the output should be 2.
Sample Input 1
11
Sample Output 1
2
4
5
6 prin
Sample Input 2
12
Sample Output 2
2
Sample Input 3
268
Sample Output 3
47
A parabola given by x = ay2 + by + c passes through points (1,2) , (-3,2) and (-2,4) .
1. Find the equation ?
2. Determine whether the line x + 2y + 3 = 0 is tangent to the parabola in (1)
3. Show that each point P(x,y) on the parabola is equidistant from (-2,2) and the line x= -4
A. Using the t-table, give the confidence coefficients for each of the following:
a. n=21, 95% confidence
b. n=26, 99% confidence
B. Compute the population proportion interval estimate given , and the confidence level.
a. n=420;p-hat=0.61, 95% confidence
b. n=960;p-hat=0.17, 99% confidence
C. Estimate the interval for the population proportion from each of the following. Then, interpret the results.
a. x=610, n=1050, 95% confidence
b. x=734, n=1540, 99% confidence
Calculate the molarity of a solution prepared by dissolving 250.0 g of Ca(NO3)2 in enough water to make 3.50 L of solution.
a
5.34 M
b
0.45 M
c
1.52 M
d
71.4 M
a sample of a gas taken at STP was analyzed and found to have a volume of 6.3L.The gas was taken place to a chamber where the pressure is increased by 50% while decreasing the temperature by 25% with respect to its original condition. calculate the volume increase/decrease of the gas
Which of the following assertions are CORRECT? (i) HCl(g) is not an Arrhenius acid but HCl(aq) is. (ii) NH3 is a Bronsted and Lowry base as well as Lewis base. (iii) H2O(l) can be a Bronsted and Lowry base but never a Bronsted and Lowry acid. (iv) Electron deficient molecules are Lewis acids.
