Posts by Naomi
Total # Posts: 248

Chemistry
A solution was prepared by dissolving 72.0 g of glucose in 300.0 g of water. The ressulting solution was found to have a boiling point of 100.68C at 1 atm. Calculate the molar mass of glucose. For water Kb= 0.51 Ckg/mol. I know the molar mass of glucose if 180 g/mol because I ... 
Chemistry
an 83.0 kg athlete running a "4minute mile" (i.e. 4.00 min/mile) ________nm an electron (me = 9.10939 × 10–28 g) moving at 3.90 × 106 m/s in an electron microscope ______nm 
Chemistry
Calcium chloride contains calcium and chloride ions. Write the groundstate electron configuration for the calcium ion. 
Chemistry
1.If a solution absorbed violet light, what color would the solution appear to be? ________________ Calculate the concentration of a solution prepared by adding 15.00 mL of 2.00×10^?3 M KMnO4 from a buret into a 50.00 mL volumetric flask, which is then filled to the 50.... 
Chemistry
What is the total molar concentration of all the ions in 0.0200 M solutions of the following salts in water? 0.0200 M KCl 0.0200 M CuSO4 0.0200 M CaCl2 
Chemistry
10. Write out the precipitation reaction formulas: NaOH(aq)+MgCl2(aq)> a. Complete ionic reaction: b. Net ionic reaction: c. Molecular reaction: *Please could some explain step by step why and how you solve this problem I do not understand at all . Thanks in advance! 
Chemistry
Lactic acid, a chemical responsible for muscle fatigue, is a monoprotic acid. When 0.578 g of lactic acid is titrated with 0.206 M NaOH, a volume of 31.11 mL of NaOH is used. What is the molar mass of lactic acid? HA + NaOH > NaA + H2O (also does the A represent acid?) 
Chemistry
7. 2Sr + O2 ? 2SrO a) Determine what is oxidized and what is reduced b) Identify the oxidizing agent and the reducing agent 8. 2Cs + Br2 ? 2CsBr a) Determine what is oxidized and what is reduced b) Identify the oxidizing agent and the reducing agent 
Chemistry
14. Using the equation of q = nC?T determine the amount of energy required to raise the temperature of 24g of water 80?C, with a heat capacity of 75.3 J/(mol*?C ) 
chemistry
The material Magnesium Sulfate What mass of dry material would be needed to make an aqueous solution with a molality of 4 moles/kg solution ? What mass of water is needed? 4 (24.305+ 32.065+ (4 x 15.999)) =481.5 ?Not sure where to go from here or if the problem is complete. 
Cultural Anthro
Contemporary anthropologists: 1 study global conflict to better understand effective conflict resolution solutions. 2 never would work to promote effective peacekeeping solutions because of their aversion to social interference. 3 only study foraging and horticultural ... 
Math
A rectangular pizza, 40 cm by 60 cm, is cut into 24 square pieces. Two round pizzas, each cut into 12 slices, also give 24 pieces. So that the pizzas are the same size, what must be the diameter of the round pizzas? 
Text study
Who were slaves free 
science
A uniform force of 30N acts on a mass 2.5kg initially at rest for 5seconds then it withdrawn and a retarding force F now acted on the mass in the direction of the motion to reduce its velocity to 12 m/s.( calculate the momentum of mass before the retarding force starts to cut ... 
Math
A basketball has a surface area of 1810 in^2 and a baseball has a surface area of 6 in^2. What is the diameter of a baseball if the diameter of a basketball is 9.5 in^2. 
History
B and D 
Math
So is the answer 187/8? 
Math
How? 
Math
Given that I take a piece of paper and cut it in half and then in half again. If the paper originally had an area of 187/2 in^2.What is the area of my new paper? 
History
Yeah b is correct. 
math
Look at your tree. it is about 20 meters. 
math
Naomi was at her house.She saw a tree.How tall is it? 
Math
Thank you so much Scott! 
Math
solve the equation c/4 5 =4 Please show all steps please! 
Calculus
Ok. Thank you. You are right but I tried working it out using 2??(11.14212.857) (x(181.4x) dx. I got a different answer, Is there a way I am to set up the yequation. 
Calculus
This is wrong, thank you 
Calculus
Use cylindrical shells to find the volume formed by rotating the region in the first quadrant enclosed by: y=1.21.4x12 and y=0 about the yaxis 
Calculus
That was for washers method, This is for cylindrical shells 
Calculus
Use cylindrical shells to find the volume formed by rotating the region in the first quadrant enclosed by: y=1.21.4x12 and y=0 about the yaxis 
Calculus
Use washers to find the volume formed by rotating the region enclosed by: y=1.4?2x?13 and y=0 about the yaxis 
Science
I need an answer.... 
Science
Can someone send me a link to what global warming is? Thanks 
urgent help!
thanks. 
urgent help!
ASAP help please. Choose one destination that is represented by a flag. Write a paragraph about the effects of climate change in that destination. I do not know what to choose for this just give me ideas plz. 
Calculus
At the scene of an accident, there are skid marks which are 200 feet long showing where a car put on the brakes. The driver swears that he was obeying the speed limit. If we assume that the car braked with a constant deceleration of 16ft/sec^2. We can determine whether or not ... 
mATH
Ms. Sue? Anyone? 
mATH
1. Compare using <,>, or =. 15 and 21 A < (MY ANSWER) B > C. = 2. Which nuumber is greater than 24? A 42 B27 C 16 (MY ANSWER) D 30 3. Which set of integers is ordered from greatest to least. A 13, 4, 0, 8 B 5, 2, 3, 1 C 12, 8, 4, 7 (MY ANSWER) D 4,6,7... 
Social Studies
The decades around the year 50 B.C. saw the end of the Roman Republic and the rise of the Roman Empire. What factors led to the decline of the Roman Republic? Do you think there was any way for the republic to be preserved? What are the disadvantages of an empire compared to a... 
math
if you know the radius of a circle how can you find its diameter? 
number base help plz
explain plz sir steve 
number base help plz
plz solve for me too hard show step payuto 123_(base4) = N_(base8 ) 
maths equation too hard@reiny
how about newton literative method? Payoto 
maths equation too hard
x^3=3^x plz help me what is the solution yes i know x=3 but how? 
maths equation too hard
x^3=3^x what is x plz show step 
set maths
In a survey of cars,it was found DAT 75% were old,65% were small nd 50% had been involved in an accident.8% were accident free large old cars,20% were accident free small new cars, 7% were accident free small old cars,6% were new small cars which had an accident what % were A... 
sequence help plz
5+11+17+23 +... Find the sum of the 2n term of the series plz help me show step 
Science Please Help
Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage. 
Chemistry
Say there is a diluted solution and we need to find the final concentration of it, using the equation M1V1 = M2V2. Does this method change, if the compound (concentration that we're trying to find), is in a solution that has already reacted with another compound? Ex: CaCO3... 
Math
if you were to sketch a cirlce graph for the data shown in the table below, what fraction of the circle would represent food? Expense Activities= $600 Food= $450 Souvenirs= %270 Show answer in fraction please! 
physics
A car starts from rest is uniformly accelerated at 0.1m/s square untill it reaches a speed of 15m/sec square. It travels at this speed for 3mins and it returns uniformly retarded so as it come to rest 8mins after starting.plot the velocity time graph of the motion and use the ... 
physics
A particle is projected with a speed of 39.2m/sec at an elevation of 30degrees.find its greatest height. 
ELA
Thanks Ms. Sue! 
ELA
Oh. Then can it be C? 
ELA
Which of the following passages from the text best illustrates Phillips ability to adapt to his blindness? A. I tried to make my eyes cut through the darkness. B. After a moment of silence, I heard the sizzle of the water as Timothy doused the torch. C. I knew it was early ... 
Math
and how did you get 45??????????? 
Math
where did you get that 10,2???? i don't get it 
geography
Sun 
algebra
Show Work Use the intermediate value theorem to show that the polynomial function has a zero in the given interval. f(x)=x^5x^4+4x^34x^220x+18 [1.5,1.8] 
Chemistry
A solution is made by dissolving 32g KCIO3 in 100g H20 at 80C. The solution is cooled to 10C. Describe what you would observe as it cooled and state what temperature this first occurs at. What mass of crystals would settle out of the solution? 
math
1. Using order of operations multiply, divide, addition, subtraction. Since there is no multiply, go to divide 3 by one third, which is actually 3x3, then add one. Then subtract 10 from nine and you get 1 
Geometry
Krista was vacationing in the jungle and wanted to ride a zip line. The platform was 173ft above the ground. The angle of elevation of the zip line was 40 degrees from the ground. Approx. How long was her ride down the zip line? 
Math
Thanks 
Math
If the area of parallelogram ABCD = 246 mm2 and h = 20.5 mm, what is the length of the base of triangle ABD? A.12 mm** B.24 mm C.123 mm D.There is not enough information given. 
Math
Demarcus drew a pair of complementary angles. He drew one angle that had a measure of 48 degrees. What was the measure of the other angle he drew? A. 42 degrees** B. 48 degrees C. 132 degrees D. 138 degrees 
physics
When point charges q1 = +8.9 μC and q2 = +7.6 μC are brought near each other, each experiences a repulsive force of magnitude 0.10 N. Determine the distance between the charges. I got 6.08 m 
physics
At a distance r1 from a point charge, the magnitude of the electric field created by the charge is 291 N/C. At a distance r2 from the charge, the field has a magnitude of 165 N/C. Find the ratio r2/r1. I divided 165/291 and got .567 
Physics
Two spherical objects are separated by a distance of 2.97 × 103 m. The objects are initially electrically neutral and are very small compared to the distance between them. Each object acquires the same negative charge due to the addition of electrons. As a result, each ... 
FINAN & QUANTITATIVE LITERACY
Your current cell phone company charges $30 per month for unlimited minutes. Another company charges $20 per month for the first 500 minutes plus 5¢ a minute for any additional minutes. Should you keep your current service or switch to the other company? 
FINAN & QUANTITATIVE LITERACY
You currently drive 288 miles per week in a car that gets 24 miles per gallon of gas. You are considering buying a new fuelefficient car for $15,000 (after tradein on your current car) that gets 48 miles per gallon. Insurance premiums for the new and old car are $800 and $... 
Spanish
Es viejo, el carro de mis padres. 
Spanish
Answer. Use a possessive adjective in your answer. Tus padres tienen un carro. ¿Es viejo o nuevo el carro de tus padres? 
Math 141
A pair of fair 6sided dice is rolled. What is the probability that a 3 is rolled if it is known that the sum of the numbers landing uppermost is less than or equal to 7? (Enter your answer as an exact fraction.) 
geography,business ,consumer studies,maths litracy
what can I do with this subjects.what job options are available for me to study in university 
math
SSS 
Math
How can I insert 4 arithmetic means between √2 and 12/√2? How do I incorporate fractions and roots into sequences? 
Math
The 6th term of an arithmetic sequence is 3 times the 2nd term. Prove that the 10th term is twice the 5th term. tn=t1+(n1)d 
check my work
bruh #8 should've been b 
math
a mother wants to invest 5000 for her sons future education. She invests a portion of the money in a bank certificate of deposit which earns 4% and the remainder in a savings bond that earns 7%. If the total interest earned after one year is $300.00,how much money was invested... 
American History
In Jefferson's view, George Washington's action in addressing the Whiskey Rebellion 
Physics
A car, moving along a straight stretch of highway, begins to accelerate at 0.0442 m/s^2. It takes the car 30.8 s to cover 1 km. How fast was the car going when it first began to accelerate? Answer in units of m/s. I tried converting 30.8 km/sec to m/s then subtracting 0.0442, ... 
Physics
If the time (up and down) the ball remains in the air is 2.14 s, find its speed when it caught. The acceleration of gravity is 9.8 m/s^2 . Neglect air resistance. Answer in units of m/s If the time the ball remains in the air is 2.27 s, find the maximum height hmax the ball ... 
chemistry
Combustion 
Science for ms. Sue
If you were to walk towards a Van der Graaf generator, the effect of its electric field would get weaker as you got closer to it. A.True B.False I think it is A 
social studies
I believe the answer is C, i might be wrong though. 
math
What are the 4 concecutive even integers such that the squar of the second term is equal to the product of the first and last term 
How long will it take the investment to double?
$3,600 is invested in an account at an annual interest rate of 4.8% compounded continuously. How long, to the nearest tenth of a year, will it take the investment to double in size?? Any help would be appreciated. 
math
order from least to greater 4 1 over 2, 19 over 4, 37 over 8, 4 3 over 16 
math
5.5 
Chemistry
1.51g 
5th grade math
(a)36,000&10=360,000 Explain how you decided on the number of zeros in the products for (a) 
Physics 2
four identical charges (q = +3µC) are arranged in a form of a rectangle. what are the magnitude and direction of the net electric force on the charge in the lower right corner attributable to the other three charges? distances are in meters. 
Chemistry
If 1.5g of CaO is mixed with 2.5M HNO3 how many moles of CaO were reacted and what type of reaction is this ? 
english
Yes, you are correct. 
math
math lol December 16, 2016 at 2:34pm your answer is not "lol" as you say:( 
Math
group a ate 1 pizza 
Science
Both carbon dioxide and water are pure substances. How are they similar to each other? A.) both substances have a set ratio of atoms that cannot be separated by physical means. B.) both substances have a set ratio of atoms that can be separated by physical means. C.) both ... 
Math HELP
a flower was 1.6 meters high one week ago in 7 days it grew 11 centimeters find the current height of the flower 12.3 m, 1.71 m, 125 cm or 11.2 cm , i did times tables and got 17.6 and then i tried deviding but got a weird long number that wasn't on the list 
Math
a flower was 1.6 meters high one week ago in 7 days it grew 11 centimeters find the current height of the flower 12.3 m, 1.71 m, 125 cm or 11.2 cm , i did times tables and got 17.6 and then i tried deviding but got a weird long number that wasn't on the list 
reading
If I got a 92 on my mid term then got a 50 on a worksheet the following day then what would be my average 
Accointing , Economics and Life Science
I was wanting to find out that with the subjects l got what type of career could l have