Monday
July 28, 2014

Posts by samantha


Total # Posts: 1,337

chemistry
What mass of silver chloride can be produced from 1.36L of a 0.130M solution of silver nitrate?

science
What is then volume in mL of then solution 3.04g of sodium chloride from a 0.110 M solution?

Research
Is it possible for someone to become deaf and mute at the age of ten while they were perfect before? If so, then what could be a reason that would lead them to lose both hearing adn talking? Thank you in advance! All help is greatly appreciated :)

math 5th grade
430

General
thank you! :)

General
What kind of questions would a detective ask a witness of a murder? how often would the detective come to the witness if he or she was closely related to the victims? ie daughter/son? this is for a writing assignment i have. all help is greatly appreciated.

Social?
Thank you!!!

Social?
Hello! alright so this is basically a general knowledge kind of question but it's for my writing assignment. i'm not really sure what a preacher may say at a funeral and i've tried searchring on google and havent found any luck. so based on your experience can you ...

English
Nursery school is for children before the age of kindergarten. Kindergarten is usually for children who are at least 5 years old by a certain date (such as Sept 1st). This grade is preparation for 1st grade and onward. Day care is for children of various ages, not really schoo...

math
7n-7=70 7n=63 63/7=9 n=9 Am I Right?

math
uncle tom's age is 7 years less than 6 times his nephews age. the sum of their ages is 70 .

Math
thank you now i understand , i got the answer but i made a mistake on the equation

Math
The sum of 3 numbers is 45. The first number is 4 times the second, while the third is 9 more than the second. Create an equation and solve.

advance functions gr 12
fill in the blank the ______________ of logarithms state that log (xy)= logx + log

Math
The price of a technology stock was $9.83 yesterday. Today, the price fell to $9.70 . Find the percentage decrease. Round your answer to the nearest tenth of a percent.

advance functions gr 12
2 QUICK QUESTIONS PLEASE HELP ME I NEED THEM FOR THE MORNING! the ______________ (fill in blank) of logarithms state that log (xy)= logx + logy solve the equation 6^3x+1= 2^2x-3, Leave in extact form THANKS

Java Programming
I'm new to Java and I'm not sure how to write the source code for this problem I got in class... Write a java program using the while and if statement that will accept ten student grades and that will display the sum of the grades, the student average, and the respecti...

business math
Fran Mallory is married, claims five withholding allowances, and earns $3,500 (gross) per month. In addition to Federal income tax (FIT), social security, and Medicare withholding, Fran pays 2.1% state income tax, and ½% for state disability insurance (both based on her...

english
Combine the sentences by changing the italicized word group to an infinitive or infinitive phrase. Then write the complete sentence in the paragraph box. The journalist took a job in the hotel. This way he would get facts for an article. I got it wrong. I put: The journalist t...

Vectors
A 10-kg mass is suspended by two strings of length 5m and 7m attached to two points in the ceiling 10 m apart. Determine the tension on each string. Round your result to one decimal place (include a vector and position diagrams)

Vectors
The person who helped me before was not very helpful. ABC has vertices A(3,2,-5), B(4,-1,7) and C(-8,3,-6). a) Determine the area of ABC. b) Determine the coordinates of point D such that ABCD is a parallelogram. c) Is the parallelogram a rectangle? Justify you...

Chemistry
I am doing a lab on Creating An Effective Airbag. We need to find out how much of the base is needed, which is NaHCO3,if we have 2.25 M of HCl, which is the acid. How much of the sample do we need? and how do we find out how much we need?

calculus 12
7. ABC has vertices A(3,2,-5), B(4,-1,7) and C(-8,3,-6). a) Determine the area of ABC. b) Determine the coordinates of point D such that ABCD is a parallelogram. c) Is the parallelogram a rectangle? Justify your answer.

algebra
The class average on a math test was 75.5 and the standard deviation was 4.2. Find the z-score for a test score of 81

math
What is 7,000 decreased by 62%

math
Sunshine Honda sold 112 cars this month. If that is 40% greater than last month, how many cars were sold last month? which ratio do I do this under? For example Portion=Rate x Base

Science
When heated solid iron3 hydroxide decomposes to produce iron 3 oxide and water vapor if 0.75L of water vapor is produced at 227 degrees celsius and 1.0 aTm. how many grams of FE(OH)3 were used?

CALC
the productivity of a person at work (on a scale of 0-10) is modeled by a cosine function: 5cos (pie/2t) +5, where t is in hours. If the person starts work at t=0, being 8:00 am, at what times is the worker the least productive? a) 12pm B) 10 am and 2pm C) 11 am and 3 pm D) 10...

geometry
Jorge put colored cards into a bag. Two of the cards were green, three were red, one was orange, two were blue, and two were purple. Jorge wants to find the probability that he will pull an orange card from the bag. What step does Jorge take to determine the number of possible...

chem
Write the orbital notation for chromium. Type your answer using the noble gas abbreviation of the configuration and only the symbols in the table below. Enter the major energy levels with their sublevels in the order in which they are filled. Enter filled orbitals in a subleve...

calculus
ƒ(x) = x³ - 4x + 2 ƒ'(x) = 3x² - 4

science
Al(s) + HCl(aq) AlCl3(aq) + H2(g) Zn(s) + HCl(aq) ZnCl2(aq) + H2(g) Consider the unbalanced equations above. A 0.250 g sample of a mixture of aluminum and zinc metal is reacted with an excess of hydrochloric acid. Both metals react with hydrochloric acid. The sample produces 2...

Life Orientation
In 10-15 lines critically discuss 5 ways in which hiv & aids impacts on the community. Provide relevant sources to support your claim..

Life orientation
Looking for the same answer.. Lol

Chemistry
A mass of a copper oxide weighed 10.00grams. The reaction was run and the amount of just copper obtained was 8.88grams. What is the empirical formula of the compound?

Math
A rose garden is designed by joining a rectangle and a semicircle, as shown below. The rectangle is 29ft long and 17ft wide. If the gardener wants to build a fence around the garden, how many feet of fence are required? (Use the value 3.14 for pi, and do not round your answer....

Grade 12 Calculus
Determine the absolute extrema of each function on the given interval. Illustrate your results by sketching the graph of each function. a) f(x) = x^2 − 4x + 3 , 0 ≤ x ≤ 3 b) f(x) = (x − 1)^2&#...

Algebra
Find the vertex, maximum or minimum,and if the concave is up or down. Y= 3x-54x+241

math
thanks

math
hey ms sue is this like a class site because ill get off if i have to

math
The circumference of a basketball is 26 inches. What is the approximate diameter of a basketball? (Use 3.14 for .)

math
i don't know what the missing piece of the equation because i just copied and pasted the question

math
thanks for answering my question before i start critisizing

math
that waz wrong not one of the answer choices that i have here

math
Helen determined she walks about 1,800 steps per of a mile. How many steps did she take if she walked 5 miles?

6th grade grammar
Thanks Billy!

6th grade grammar
Please help I have a test tomorrow! Is there a mistake with the comparative adverb? 1. Thomas jumped highly than he ever had before. a. Change highly to higher . b . Change highly to highlier . c. Change highly to more higher . d. Make no change. 2. Andre felt gooder after he...

algebra
do you think you could help me with this quiz?

Spanish - Proofreading
THANK YOU SOOOOO MUCH!!!!!!!!!! You just saved me from failing my essay :)!!

Spanish - Proofreading
Can someone please proofread this for me? Thank you. Mi viaje al cine y el restaurante. En la tarde del sabado, mi amiga, Amelia, y yo vamos en el centro a las dos y media de la tarde. Mi amiga lleve los jeans negro y la blusa amarilla, y yo llevo el vestido verde y la bufanda...

calculus
determine the point of intersection of the tangents at the points of inflection to the curve f(x)= x^4 – 24x^2 – 2

Applied Behavioral Science
Recognizing Culture Gaps As a leader, how might a leader recognize a culture gap? What are some techniques leaders might use to influence and change cultural values when necessary?

Chemistry
How many grams of C6H12O6 must be added to 0.750 kg of water to make a 1.25 m solution?

Chemistry
How many grams of H2SO4 are needed to make a 4.50 m solution in 300 g H2O?

math
The strongest recorded earthquake in the world took place in Chile on May 22 1960. It had a magnitude of 9.5 on the Richter scale. The strongest quake actually recorded in Canada was magnitude 8.1 on August 22 1949 and occurred off the Queen Charlotte Islands. (The strongest q...

adv functions
The strongest recorded earthquake in the world took place in Chile on May 22 1960. It had a magnitude of 9.5 on the Richter scale. The strongest quake actually recorded in Canada was magnitude 8.1 on August 22 1949 and occurred off the Queen Charlotte Islands. (The strongest q...

math
how to solve this need to change to equivalent divisio with a whole number 0.4/9.16

physics
calculate the uncertainty of the coefficient of friction. avg. ì=.574

physics
a car traveling 41.6 m/s is 190 m behind a truck traveling 19.4 m/s. how long will it take the car to reach the truck?

physics
at highway speeds, a particular automobile is capable of an acceleration of about 2.6 m/s^2. at this rate, how long does it take to accelerate from 60 km/h to 110 km/h?

geography
do you think that the island of Santorini was in fact the legendary Atlantis Plato depicted? Support your view with evidence

chemistry
its -3.02

Chemistry calorimeter.. please help!
thank you!

Chemistry calorimeter.. please help!
A coffee cup calorimeter contains 100ml of .200M H2SO4 at 22.3 degrees Celsius. When 2.16g Mg is added, the temperature rises to 36.3 degrees Celsius. What is the heat of the reaction per mole Mg? Please help and show steps. Much appreciated :)

Math
Teresa had a family photo with the dimensions of 12 inches by 16 1/2 inches. What is the area of the photo in square inches? Please help!!! :(

physics homework
two tugboats pulled a disabled supertanker. each tug exerts a constant force of 1.80 x 10 degree N, one 14 degree west of north and the other 14 degree east of north, as they pull the tanker 0.75 km toward the north. what is the total work they do on the supertanker?

physics homework
You throw a 20 N rock into the air from ground level and observe that when it is 1 5.0 M high, it is traveling upward at 25.0 m/s. Use the work energy principle to find (a) the rock’s speed just as it left the ground and (b) the maximum height the rock will reach.

physics
A stone is thrown horizontally at 30.0 m/s from the top of a very tall cliff. (a) Calculate its horizontal position and vertical position at 2-s intervals for the first 10.0s. (b) Plot your positions from part (a) to scale. Then connect your points with a smooth curve to show ...

english/history
Explain how The Federalist Papers would have been more or less successful if newspapers had been printed monthly (rather than daily or weekly).

Math
Number Sense Fabio said that there are 3 times as many people on a basketball team as on a tennis team. Is he correct? Explain why or why not. Tennis--2 players Basketball--5 players Softball--10 players

Finance
You (or your parents) plan to pay $1,275.00/month for a mortgage. How much is the minimum realized income per month to the nearest penny

chemistry
If you were asked to convert 25 cg to the unit hg, which of the following would be the first fraction used in the conversion?

chemistry
Which statement is the best example of pseudoscience? Mike joined a group that studies phrenology. C.J. joined a group that studies endangered species. Katarina joined a group that studies herbal remedies. Lee joined a group that studies stars and planets

math
find the unit rate of $122 in 8 days

math
the unit of $112 in 8 days

Algebra II
Simplify the expression in exponential notation. a*a*a I thought it was a^3 but that was wrong.

Math
Select all that justify the following statement. 2 * 1/2 = 1

math,probability
I just don't understand how to start it, I need structure , I can figure out the rest, don't know how to get into a strategy.

math,probability
Hi, I don't understand a homework question, can anyone please help me? I'm bad at probability. what is the probability that when you pick two cards, you will select at least one king out of two in a deck of six standard cards? (assuming there are no jokers)

Chemistry
How do I calculate the joules to heat 17 g of water from 22 degrees C to 78 degrees C?

Math
The ratio of the maximum speed of Car A to the maximum speed of Car B is 2:3. Explain whether Car A or Car B is faster.

urgent i need help within an hour!
Ascorbic acid (vitamin C, C6H8O6) is a water-soluble vitamin. A solution containing 83.3 g of ascorbic acid dissolved in 210. g of water has a density of 1.23 g/mL at 55°C Calculate the molarity of ascorbic acid in this solution. i got 2.77 but its wrong

chem
a was incorrect

chem
Calculate the number of moles of solute present in each of the following solutions. a) 39.0 mg of an aqueous solution that is 1.00 m NaCl b)90.0 g of an aqueous solution that is 2.10% sucrose (C12H22O11) by mass.

Math
John bought some stamps. He used 3/5 of then to mail letters. He had 12 stamps left. How many stamps did he use?

Percents Using Proportions
Thank you! I will reverse my work now. This was extremely helpful for grasping a new concept.

Percents Using Proportions
Here is my (probably incorrect) work so far: 1) n/160 = 125/100 40 160x125=4000 ________ 100 | 4000 Was I suppose to divide it or not? I'm not sure. 2) 714/1295 = n/100 _________ 714/1295=102/185 185 | 10,200 102x100=10,200

Percents Using Proportions
I do not understand the wording and/or got stuck while I was working on the following two problems: The attendance at a family reunion was 160 people. This was 125% of last year's attendance. How many people attended the reunion last year? There are 1,295 students attendin...

science-repost! please help
Determine if the following substances are soluble (at room temperature, 1 atm) in water or in hexane (: grease and CS2 how do you know this

science
The enthalpy of solution of KBr in water is about +198 kJ/mol. Nevertheless, the solubility of KBr in water is relatively high. Why does the solution process occur even though it is endothermic

chem
Determine if the following substances are soluble (at room temperature, 1 atm) in water or in hexane (: grease and CS2 how do you know this

CJ 216
I would like to mention, really rude answers.

CJ 216
I know its confusing because they don't really tell what Uncle Bob has done. I am finding the same difficulty. This website was of no help.

chem-
Draw the structures of the two monomers that yield Nomex®. can someone show me?

Pre-Algebra
Simplify the expression. Write the result using positive exponents only. (-2x^3y^-4)(5x^-1y)

chem
760 torr is wrong

chem
A liquid that has an equilibrium vapor pressure of 129 torr at 25°C is placed into a 1-L vessel like that shown below. A few mL of the liquid is introduced into the vessel at 25°C while it has a pressure of 1.00 atm of air in it, without allowing any of the air to esca...

Chemistry
convert grams to moles then use the equatino to do moles of Na to moles of H2O then convert moles of H2O to molecules by using avogadros number (6.022e23) I believe

chem-answer check please
Compounds like CCl2F2 are known as chlorofluorocarbons, or CFCs. These compounds were once widely used as refrigerants but are now being replaced by compounds that are believed to be less harmful to the environment. The heat of vaporization of CCl2F2 is 289 J/g. What mass of t...

chemistry
Compounds like CCl2F2 are known as chlorofluorocarbons, or CFCs. These compounds were once widely used as refrigerants but are now being replaced by compounds that are believed to be less harmful to the environment. The heat of vaporization of CCl2F2 is 289 J/g. What mass of t...

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