Monday

February 27, 2017
Total # Posts: 60

**chemistry**

Which of the following statements is false ? a) ?S is negative when water condenses at 100oC b) ?Ssurroundings is positive when water condenses at 100oC c) ?Suniverse is equal to zero when water condenses at 990C d) ?Suniverse increases when water condenses at 110oC

*February 5, 2017*

**chemistry**

Calculate ?S universe for the process H2O (s) ? H2O (l) given that ?Hfusion = 6.02 kJ/mol and ?S system = 22.1 J/K mol . Remember that ?S surrounding = -?Hsystem / T. a) -20oC b) 0oC c) 20oC

*January 29, 2017*

**Probability**

A large governmental survey of dental care among children 2 to 17 years old found the following distribution of times since last visit to the dentist: (1st column)Time since last visit (1st column)6 months or less (1st column)>6 months but no more than 1 year (1st column)&...

*April 28, 2016*

**Probability**

A school survey found that 9 out of 10 students like pizza. If three students are chosen at random with replacement, what is the probability that all three students like pizza? Answer with 3 decimal places.

*April 27, 2016*

**Probability**

Thank you so much !

*April 27, 2016*

**Probability**

Mr.Roy needs two students to help him with a science demonstration for his class of 18 girls and 12 boys. He randomly chooses one student who comes to the front of the room. He then chooses a second student from those still seated. What is the probability that both students ...

*April 27, 2016*

**Probability**

Thanks !

*April 27, 2016*

**Probability**

A single card is drawn at random from an ordinary deck of cards. Find the probability that is either an ace or a black card. Answer to 3 decimal places.

*April 27, 2016*

**chem**

5.15g sample of gas containing only carbon and hydrogen has a volume of 785ml with a pressure of 1522 torr at a temperature of 280C. It is combusted in pure dry oxygen and the products are collected. They are collected to a temperature of -210C and the ice is removed and has a...

*February 3, 2016*

**Math**

Geography Helen made 6 pizzas and cut each of them into eighths. If she severed 3 1/4 pizzas, how many slices of pizza did Helen left over

*October 9, 2015*

**Biochemistry**

A gaseous system undergoes a change in temperature and volume. What is the entropy change for a particle in this system if the final number of microstates is 0.503 times that of the initial number of microstates?

*May 7, 2015*

**~MATH~**

I just took the test and Mr.Bacon was correct with most of them. Number 7. is C not D. But thank you Mr.Bacon :)

*February 4, 2015*

**Language arts**

Kyan is right

*January 26, 2015*

**history**

trade routes from mecca to cordoba is the african trade route, and the european trade route is between mecca and london,but i'm not sure if my teacher is correct or not. And I've been searching for a long time.

*November 4, 2014*

**history**

What cities are in between the European trade route? And what are the cities in between the African trade route?

*November 4, 2014*

**math-line graph**

its a coordinate graph/line graph. Okay, so the x axis is the horizontal line and the y axis is the vertical line. I don't know if it's that pattern, but the pattern is like this. y = ?

*November 19, 2013*

**math-line graph**

x: 0, 1, 2, 3 y: 3, 2, 1, 0 I don't know what the pattern is in this x and y line graph. Please help me.

*November 19, 2013*

**Social Studies**

Characteristics of a large,fast growing population Please help me and I did search,but I couldn't find the answer.

*November 3, 2013*

**science**

A substance that has a mass of 20g and volume of 10cm3. How much mass does one cm3 of this substance have? A substance with a mass of 125g and a volume of 25cm3. How much mass does one cm3 of this substance have? Please tell me how to do this.

*October 22, 2013*

**languge art**

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you ...

*October 10, 2013*

**math**

one-third of a ===>1/3 x a one-eighth of r ====> 1/8 x r Is this answers correct or wrong?

*September 12, 2013*

**Math-Please help**

*Is the statement below true of false? The expression (14x + 7y) + 5x + 9(33y + 11) is the sum of three terms. I think this question is true. please explain this to me.Nobody respone to me.

*September 11, 2013*

**math**

*Is identifying factors in the expression 6(x+5) an algebraic expression? *Is the statement below true of false? The expression (14x + 7y) + 5x + 9(33y + 11) is the sum of three terms. I think this question is true and can you please explain this to me.

*September 11, 2013*

**science**

the block is acted upon by its W=200 lb, a horizontal force Q=600 lb, and the pressure P exerted by the inclined plane. The resultant R of those forces is up and parallel to the incline thereby sliding the block up it. determine P and R.

*June 28, 2013*

**social studies**

Answer the questions on our posts please! Thank you

*May 20, 2013*

**social studies**

1. Name the five responsibilities of united state citizens? 2.System of sharing power in the government 3.Name the 6 criteria for becoming a naturalized citizen. 4.Purpose of checks and balances? Please help me!! thanks

*May 20, 2013*

**math vocab?**

what is math vocab? The types of units that are used to measure the perimeter of an object thanks

*May 16, 2013*

**math**

Todd is moving sand from his driveway to the backyard. The wheelbarrow weighs 30 kilograms when it is full of sand. When it is empty, it weighs 12 kilograms. How many grams of sand did Todd move if he filled and emptied the wheelbarrow five times? answer:210,000 grams Is it ...

*May 2, 2013*

**Chemistry**

dont know

*April 23, 2012*

**algebra**

ball is thrown upwards at 20 ft/sec, the height h after t seconds is given by h = -16t^2 + 20t.
How many seconds does it take for the ball to reach its maximum height, and what is this height?

*May 29, 2011*

**Math**

#1 70%=0.7 (because70%/100%=0.7) The half-life 1/2=0.5 Equation: 0.7=0.5^(t/5730) t=5730log0.7/log0.5=2949(years)

*November 21, 2010*

**math**

peter has 3 different kinds of buttons in one box. there are 124 more ivory buttons than plastic buttons and 1/3 as many wooden buttons as ivory buttons. there are 72 wooden buttons. how many plastic buttons are there?

*September 3, 2010*

**math**

Search: ralph's clothing company has an order for 20 skirts to be made from a bolt of fabric that has 28 1/4 yd of fabric. the customer wants as many flared skirts as possible, and the rest can be straight skirts. a straight skirt uses 1 1/4 yd of fabric, and a flared ...

*September 3, 2010*

**math**

I subtracted wrong. Thank you.

*September 3, 2010*

**math**

patty bought 24 yards of fencing to put around her garden. she only used 20 yards. how many feet of fencing did she have left over?

*September 3, 2010*

**math**

chita is 3 3/4 years younger than pablo. if you multiply chita's age by 4, the answer is 43. how old is pablo?

*September 2, 2010*

**math**

george can you give me some additional help. thanks

*September 2, 2010*

**math**

my 6th grade grandaughter needs an equation. than you.

*September 2, 2010*

**math**

tom was paid $4.50 per hour for painting a fence and $ 6.50 per hour for mowing grass. He worked 7 hours and earned $39.50. How many hours did it take him to paint the fence/

*September 2, 2010*

**math**

yes i can add. thank you.

*September 1, 2010*

**math**

do not understand.

*September 1, 2010*

**math**

ralph displays 9 samples of fabric on a rectangular posterboard. each sample is a 3-inch square. he places them in 3 rows each 1 inch apart on all sides. this arrangement leaves a border of poster board 1 1/4 inches along the sides and 1 1/2 inches along the top and bottom. ...

*September 1, 2010*

**math**

3 weeks vacation days equal 21 days. we are off two days a week.

*September 1, 2010*

**math**

she would have two days a week off. this would mean that her 3 weeks vacation is 3x7=21 days. please respond.

*September 1, 2010*

**math**

tisha works 5 days a week as a paramedic. she has 10 holidays off and 3 weeks vacation every year. if tisha never misdes a regular day of work, how many days does she work in each year that is not a leap year?

*September 1, 2010*

**math**

yes' thank you. i'm trying to help my grandaughter with her 6 grade math summer project.

*September 1, 2010*

**math**

please give better explanation, if possible.

*September 1, 2010*

**math**

the product of three consecutive numbers is 4080. what are the numbers?

*September 1, 2010*

**math**

chita is 3 3/4 years younger than pablo. if you muktiply chita's age by 4, the answer is 43. how old is pablo?

*September 1, 2010*

**math**

simon added $4.50 to the money in his bank. then his father agreed to double simon's money, which gave him $33. how much money did simon have to begin with?

*September 1, 2010*

**math**

from one piece of walnut, sam cut two 9 1/2 in. strips for 2 sides of a frame. he cut two 11 3/4 in. strips each for the other 2 sides. sam had 5 1/2 in. of walnut left. how long was the piece of walnut when he started?

*September 1, 2010*

**math**

jeanine used 2 1/2 cups of flour to make muffins and 1 3/4 cups of flour to make biscuits. after bortowing 1/4 cup of flour, she had 2 1/4 cups left to make bread. how much flour did she have to begin with?

*September 1, 2010*

**math**

the question was how many people were on the elevator when she got on?

*September 1, 2010*

**math**

paulina gets on an elevator. at the first stop, 4 people get off and 3 get on. at the second stop, 5 people get off and one gets on. at the third stop, paulina gets off. if 4 people are still in the elevator when paulina gets off, how many people were on the elevator when she ...

*September 1, 2010*

**math**

chita is 3 3/4 years younger than pablo. if you multiply chita's age by 4, the answer is 43. how old is pablo?

*September 1, 2010*

**math**

a stick is cut so that one part is 2/3 of the length of the other. how long, inches, is the shorter part?

*September 1, 2010*

**math**

lynn wants to make 25 dresses. one dress uses 2 2/3 yd of fabric. the bolts of fabric she wants to use each have 30 yd jf fabric on them. how many bolts will lynn need to use?

*September 1, 2010*

**math**

thank you. how did you get raid of the 8 on the left side?

*September 1, 2010*

**the big idea of energy**

It's a very tough answer but it is no created

*December 5, 2006*

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