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The sub-phylum veterbrata is made up of how many class?
1. For the reaction, calculate how many grams of the product form when 2.4 g of Cl2 completely reacts.
Assume that there is more than enough of the other reactant.
2Na(s)+Cl2(g)→2NaCl(s)

2. For the reaction, calculate how many grams of the product form when 2.4 g of CaO completely reacts.
Assume that there is more than enough of the other reactant.
CaO(s)+CO2(g)→CaCO3(s)

3.For the reaction, calculate how many grams of the product form when 2.4 g of Mg completely reacts.
Assume that there is more than enough of the other reactant.
2Mg(s)+O2(g)→2MgO(s)

4.For the reaction, calculate how many grams of the product form when 2.4 g of Na2O completely reacts.
Assume that there is more than enough of the other reactant.
Na2O(s)+H2O(l)→2NaOH(aq)
A particular reactant decomposes with a half-life of 107 s when its initial concentration is 0.360 M. The same reactant decomposes with a half-life of 217 s when its initial concentration is 0.178 M.
Factor p(x)=x^3+3x^2-16x-48 then State the zeros of the polynomial function
A bullet of mass m and speed v is fired at an at rest pendulum bob. The bullet goes through the bob, and exits with a speed of v/3. The pendulum bob is attached to a rigid pole of length L and negligible mass. What is the minimum value of v such that the pendulum bob will barely swing through a complete vertical circle?
I have no idea how to start this, have never been good at problem solving really.
Samples of a car company's output is taken and 490 cars are made in a day with a known standard deviation of 16 cars. Spell out the null and alternative hypotheses that the average production of the car company is less than 475 cars. Evaluate the hypothesis (Accept or Reject) at the following significance levels: 0.001 and 0.1
A box of unknown mass is sliding with an initial speed
vi = 5.30 m/s
across a horizontal frictionless warehouse floor when it encounters a rough section of flooring
d = 2.00 m
long. The coefficient of kinetic friction between the rough section of flooring and the box is 0.100. Using energy considerations, determine the final speed of the box (in m/s) after sliding across the rough section of flooring.
When 15g of hydrogen reacts with 30g of oxygen to form water
A car of mass 1200kg falls a vertical distance of 24m starting from rest. What is the workdone by the the force of gravity on the car?
Create a program that satisfy the following requirements:
1. Ask user to enter integer numbers, one at a time.
2. If the number is -1, stop entering number.
3. Print out the total number that is greater than 18.


For example:
The following is screen shot when user enters the sentence “computer science is great”.

enter an integer:
13
enter an integer:
2
enter an integer:
21
enter an integer:
40
enter an integer:
-1
Total number that is greater than 18: 2
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