Karina

This page lists questions and answers that were posted by visitors named Karina.

Questions

The following questions were asked by visitors named Karina.

So we have a question for chem. homework and i really don't understand. can you please explain it..... Question:There is a change in the type of oxides formed with the period three elements. Indicate the type of compounds formed (ionic, amphoteric, covale...

Air is about 78.0% nitrogen molecules and 21.0% oxygen molecules. Several other gases make up the remaining 1% of air molecules.What is the partial pressure of nitrogen in air at atmospheric pressure (1 atm)? Assume ideal behavior.

I need to combine each of the folowing sentences and improve them( clarity and interest). English is not my first language,i am having harder times understanding this. 1. Every so often, a large group of wales or dolphins will throw itself upon shore. The...

Hotel construction tends to come in waves, resulting in a) a major increase of capital flowing into the industry b) excess supply c) excess demand d) low interest rates on loans and mortgages I think the answer is b, excess supply. Because since hotel in...

How do you find a perimeter

Explain- how would the gravitational force between Earth and the Moon change if the distance between them increased?

You pull upward on a stuffed suitcase with a force of 100 N, and it accelerates upward at 0.816 m/s2. (a) What is the mass of the suitcase?

The length of a rectangle is three less than three times the width. The area is 90ft^2. Find the width and the length of the retangle.

The product of two consecutive integers is two hundred forty. Find the two integers.

How do you write a program that prints out your course schedule for a week? Here's an example of the output for one day: Monday 9:00 Computer Science 101 Monday 11:00 Physics 201 Monday 2:00 Dance 153

A dockworker applies a constant horizontal force of 90.0Nto a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves a distance 12.0min a time of 5.20s.If the worker stops pushing after 5.20s, h...

Mass (before reaction): test tube + HCl(aq) + stir bar + capsule 26.600 g Mass (after reaction): test tube + HCl(aq) + stir bar + capsule 25.300 g Volume of water displaced from the squirt bottle 148 mL Temperature of the CO2(g) 287.4 K Pressure (atm) 1.0...

On vacation, Le Hong averaged 45 mph traveling from city A to city B. Returning by a different route that covered the same number of miles, he averaged 50 mph. What is the distance between the two cities if his total traveling time was 30 hours

the model of the car you are thinking of buying is available in five different colors and four different styles. In how many ways can the car be ordered?

Consider a hemispherical bowl of radius 10cm. (4 points) If the water level in the bowl is h cm deep, find the radius of the surface of the water as a function of h. (6 points) The water level drops at a rate of 0.1 cm per hour. At what rate is the radius...

Consider making a four-digit I.D. number using the digits 3,5,8, and 0 a. How many I.D. numbers can be formed using each digit once? b. How many can be formed using each digit once and not using 0 first? c. How many can be formed if repetition is allowed...

In most state and local courts, 12 jurors and 2 alternates are chosen from a pool of 30 prospective jurors.The order of the alternates is specified. If a juror is unable to serve, then the first alternate will replace the juror.The second alternate will b...

What critical value for z would be used to test the hypotheses: H0:μ≤10 and Ha:μ>10, for α = 0.05 ?

Calculate the work done (in joules) by a chemical reaction if the volume increases from 3.3L to 3.5L against a constant external pressure of 3.7atm .

What is 6(a+7) when a=8

Hello, I'm writing a story and was wondering if someone could give me realistic reasons as to why a brother would kidnap hid brother? that's kind of what happenes in my story. the brothers are like 50 years old though. thank you!

That's great! that was my main idea but how would he be able to get the money from his brother anyway? so far i have made it so that the guy kidnaps his brother and his brother's wife. the daughters going to save them but how would he take the money?

The breathing process is controlled by (Select all that apply) A. The diaphragm B. The pharynx C. Blood vessels D. rib muscles

At takeoff a commercial jet has a 65.0 m/s speed. Its tires have a diameter of 0.700 m. (a) At how many rpm are the tires rotating? Incorrect: Your answer is incorrect. rpm (b) What is the centripetal acceleration at the edge of the tire? Incorrect: Your...

The existence of the planet Pluto was proposed based on irregularities in Neptune's orbit. Pluto was subsequently discovered near its predicted position. But it now appears that the discovery was fortuitous, since Pluto is small and the irregularities in...

Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 95.0 kg, down a θ = 50.0° slope at constant speed. The coefficient of friction between the sled and the snow is 0.100. (a) How much work is done by friction as the sled moves 3...

HA is an acid that ionizes in 10% in solution. what is the [h+] of a 0.01 m solution of ha?

I don't know if my answer for this question is correct but can you please check? 1.) Between which pair of numbers does the square root of 15 lie? Do without using a calculator. A.) 3.7 and 3.8 B.) 3.8 and 3.9 C.) 3.9 and 4.0 D.) 14 and 16 I think the ans...

What statement makes this true? 9^-2 A.81 B.18 C.1/81 D.-1/81 Is it A?

Tina baked a loaf of cinnamon bread and cut it into 15 equal pieces. Four people ate an equal number of pieces left. there are three pieces left. what fraction of the bread to each person eat ?

Sharons rectangular vegteable garden is 20 feet by 30 feet. In addition mulching her garden, she wants to put mulch around the outside of her garden in a uniform width. If she has enough mulch to cover an area of 936 sqaure feet, how wide should the mulch...

hanna has a bag of 15 red, 11 orange 9 yellow, 12 green, 6 blue and 11 purple crayond.How many times would you expect ganna to puck a red crayon if she picked a crayon 90 times?

A chemical reaction produces 3.75 L of chlorine gas at STP. How many moles of chlorine are produced by the reaction?

How many grams of sodium hydroxide, NAOH, are needed to make up 580 ml of 1.50M sodium hydroxide solution?

What is the molecular formula of a molecule that has an em formula of CH and a molecular mass of 78.11 g/mol?

How many moles of calcium carbonate, CaCO3, are in 1.500 L of a 0.40M calcium carbonate solution?

The earning per share for a retail store were $1.87 in 2008 and $2.51 in 2010. Use the midpoint formula to estimate the earnings per share in 2009. Assume the earning per share followed a linear pattern.

How does distance running affect the energy systems? A. The oxidative system becomes more important, and the ATP-PC system becomes less important. B. The oxidative system becomes more important, and the lactic acid system becomes less important. C. The AT...

Saul reads every week. In his first week of reading, he read 50 pages. Each week after that, he read 65 pages. Which expression represents the total number of pages Saul has read, where w represents the number of weeks since he first started reading. 65w+...

Data is collected on the number of ice cream cones sold in a shop on a certain day and the number of people wearing sunglasses visiting the shop that same day. What type of relationship is most likely to exist between these two variables? A. positive corr...

If 3 raise to power 2y -6(3raise to power y) =27

Answers

The following answers were posted by visitors named Karina.

So we have a question for chem. homework and i really don't understand. can you please explain it..... Question:There is a change in the type of oxides formed with the period three elements. Indicate the type of compounds formed (ionic, amphoteric, covale...

thank you guys sooo very much. I can't belive everyone has the same homework as me. Thanks again soooo much. Love Karina =]

How Do Humands Add Extra Carbon

Can you elaborate on that. I still don't know how you calculated and got 447 N

Hey Anna, can you break that down. I'm so confused!

these are the steps to do number 3. i still have yet to try it though: first you need all the euations of the forces so horizontal and vertcal then you need torque so once you hv your torque youll hv lots of L you should factor that out nd solve for T the...

yep, it's supposed to be a huge number for #3

i got around 4000s. Hey for question 2 is it supposed to be a tremendous number as well. I got like 4450

Question #1 T(l1)cos30 + Warm(l2)cos30 - WM(l3)cos30 solve for T

Erghh I need this too I am having trouble writing it ... If someone can help!! This information from Wikipedia doesn't help that much...

use v=sqrt 2* Etotal/m solve for Etotal then use Bernoulli's equation and solve for k

Just wanna know if this is right!!! #include <iostream> #include <string> using namespace std; const string DAY1 = "Monday"; //days in the week const string DAY2 = "Tuesday"; const string DAY3 = "Wednesday"; const string DAY4 = "Thursday"; const string DA...

Amber is 100% right. They are all correct!!

All of Devin's answers are correct. Except number 5 and 20. For number 5 read pages 21-29 and for 20 read pages 58-75 (if for PF).

I need the answers to FRUSTRATIONS OF PROGRESS;CHAOSAND COMPLEXITY exam. PLEASEEEEEEEE someone help. I am trying but don't understand one thing!!! :,( It's a PF exam.

you do -1 + 2 which is 1 that gives you 2y= 1 now you know what to do. Just dived the 2 and you will get y=1/2 that is your equation---its a straight horizontal line at y=1/2 with x values changing

The answer is 10, 20, 40, 80, and 160.

Calculate the number of moles of CO2 1.3/44.01+.029 This doesnt work

That's great! that was my main idea but how would he be able to get the money from his brother anyway? so far i have made it so that the guy kidnaps his brother and his brother's wife. the daughters going to save them but how would he take the money?

oh that's a great idea!!! i love it thank you!!

Small, High, B3LYP

what are you supposed to do ??

WHATS THE RIGHT ANSWER

The fraction of a mix that is red paint 1/4

The answer is 6.3

x=2sin(3t), y=9cos(3t) Start by squaring each equation to achieve the "y^2" and polynomial x^2=4sin^2(3t) y^2=81cos^2(3t) Move the coefficients to the left and add these polynomials: (x^2/4+y^2/81)=sin^2(3t)+cos^2(3t) From our trig formulas, we know that...

Here is the answer: John Smith led the colony of Jamestown and explored the Chesapeake Bay.

It is a tropeziod

It is not C just to let you know I took the quiz. Sorry, I don't know the correct answer.

So what is the answer?

How can I do this

The system of linear equations: y = −2x − 3 y = −2x + 2. What type of line (parallel, intersecting, and same) does this equation express? Parallel Line: Same slope; Different y-intercepts. Intersecting Line: Different slope; Different y-intercepts. Same L...