# Posts by bre

Total # Posts: 162

Chem
How many liters of H2 gas can be produced at 0 ?C and 1.00 atm (STP) from 10.0 g of Zn? Zn(s)+2HCl(aq)?ZnCl2(aq)+H2(g)

Chemistry
The Ksp of manganese(II) hydroxide, Mn(OH)2, is 2.00 × 10-13. Calculate the solubility of this compound in g/L.

Math
I have 17 hundreds,2 tens,9 ones,6 tenths and 7 thousands. What number am I?

math
I think teacher made a typo because it cannot be solved as written, unless 14 1/2 boys and 9 1/2 girls which won't work.

math
if there are 24 students and 5 less girls than boys , how many girls are in the class. I don't think there is a solution to this.

math
3x+3x+x+x-5+x-5 = perimeter 9x-10=perimeter

Math
A rate is just a fraction with different units in the top and bottom. So answer is 10 1/2 miles divided by 2 hours. 10.5 miles/2 hours = 5.25 miles/hour

Math
A lawn care company charges a homeowner \$1625 a year to maintain the lawn that is 65' x 50' what is the maintenance fee per square foot

math
The radius of the sphere is 10 units. What is the approximate volume of the sphere? Use ? = 3.14 and round to the nearest whole cubic units

chemistry
PLEASEEEE HELP Write the balanced equation for the reaction between zinc and acetic acid. The equation has been written you just have to balance. ___Zn + ___HC2H3O2 ? ___Zn(CH3COO)2 + ___H2

math
David is a car salesman. He earns a salary of \$750 a month, plus a commission of \$300 per car that he sells. David needs to earn a minimum of \$3,500 per month. Write an inequality for the number of sales he needs to make to earn his minimum. Let c represent the number of cars ...

Algebra 2
Small typo it rebounds to 4/5 of its previous height

Algebra 2
A ball is dropped from a height of 25 feet and allowed to continue to bounce until it eventually comes to a rest. Each time the ball bounces it rebounds to 45 of its previous height. After which bounce is the ball's rebound height 10.24 ft?

History Ms. Sue & bobpursley
That Paragraph says in my book.

History Ms. Sue
This is what it says. ^^^^

History
African Culture The tension between traditional and modern and between native and foreign also affects African culture. Africans have kept their native artistic traditions while adapting them to foreign influences. A dilemma for many contemporary African artists is the need to...

History
Africa

History
how has the tension between traditional lifestyles and western influences impacted African cultures?

College Algebra
A yo-yo factory has fixed operating costs of \$450,000 per year. In addition to the fixed costs, the cost to produce one yo-yo is \$1.10. The yo-yo company sells the yo-yos to a distributor for \$5.50 each. How many yo-yos must be sold in a year to earn a profit of at least \$140,...

math
Francine and Cheryl received equal scores on a test made up of multiple choice questions and an essay. Francine got 34 multiple choice questions correct and received 14 points for her essay. Cheryl got 30 multiple choice questions correct and received 22 points for her essay. ...

math
write each expression using n as your variable.then simplify fully. 1.five more than the sum of a number and ten. 2.the product of eight and seven less than a number. 3.the quotient of a number and three, increased by one. 4.ten less than the product of six and eight less than...

stats
Find the explained variation for the paired data. The equation of the regression line for the paired data below is y-hat = 3x. Find the explained variation. x= 2 4 5 6 y= 7 11 13 20

Chemistry
Ive been working on a homework assignment for hours now. It's only 6 problems and I cant figure them out. I've tried and tried but everytime I type something in It says im wrong! Please help. A compound with a formula mass of 116.07 amu is found to be 41.39% carbon, 3....

math
pentogon

Health
That girl was right i got 12/12 100%

Chemistry

Chemistry
Calculate the number of atoms in 2.58 mol antimony. Its an example problem, I need help!

Calculus
You are driving at 20 m/s when you notice a tree blocking the road, 30 meters ahead of you. It takes you half a second to react before slamming on the brakes. Your car decelerates at a constant 10 m/s2. How far does your car travel before stopping? Will you hit the tree?

geomtry
1/5 (a+10)=-3

Math
What is 225-256dto the 2nd power =?

math
Sue is two years older than Chris. Jim is 4 years older than Sue. Their ages total 68. How old is Sue?

algebra
Identify the solution of the system of equations, if any. -4x-2y+=4 8y+16x-16

Principles of Public Speaking: Lesson 8
nonverbal communication includes:

SP180.1.2 Principles of Public Speaking: Lesson 8
SP180.1.2 Principles of Public Speaking: Lesson 8

Probability

Probability

probability
does someone have an answer for this question? i am stuck

An experiment was conducted to determine the abrasion resistance of a new type of automobile paint. Twelve different strips of metal were painted with the new paint. The abrasion resistance of each piece was then tested on a machine. In the sample, the abrasion resistance ...

Probability
@RVE, do you know what c1 is equal to? I'm still having trouble with this problem.

Probability
Could you possibly give the answers for the first parts as well?

College Chemistry
How many moles of aluminum ions are present in 0.50 mole of Al2(SO4)3?

A local Barnes and Noble paid a \$80.40 net price for each calculus textbook. The publisher offered a 10% trade discount. What was the publisher’s list price? (Round your answer to the nearest cent.)

physics
The blades of a ceiling fan have a radius of 0.340m and are rotating about a fixed axis with an intial angular velocity of +1.25rad/s2. When the switch on the fan is turned to a higher speed, the blades acire an angular acceleration of +2.55rad/s2. After 0.480s have elapsed ...

physics
if u have swam one lap in a swimming pool, that means from one end to the other and back. In 3.5 h, a swimmer makes exactly 60 laps in the pool, that is 40 m long. Determine the distance the swimmer traveled, the total displacement of the swimmer, the swimmer's average ...

math
what is 2x+y=-7 in slope intercept form?

math
Find the measure of the largest acute angle in a 5-12-13 triangle.

Chemistry
Heat energy is added to a 325 g block of nickel, and the temperature increases from 23 degrees celsius to 51 degrees celsius. If the same amount of heat was added to the same mass of water at the same temperature, what would the water's final temperature be?

Government
5 is true. 8 is federalism

psychology
dignity and human welfare

Math
You bake brownies in a 9-by15-inch pan. If you cut the brownies into servings 3 inch by 3 inch., how many squares will I have?

math
2 csc x - 3 = - 5

Chemistry
Ccl3cooh

World Geography
REVIEW 1.Which of the following is an abundant natural resource found in Canada? A. Gold B. Timber C. Soybeans<<<<< D. Cotton

World Geography
REVIEW 1.In what ways did immigrants contribute to American society in the early 1900s? A. They increased the defensive power of the United States. B. They worked in factories, built railroads, and opened businesses. C. The took political power in most eastern cities.<<&...

World Geography
REVIEW 1.Where is the majority of Canada’s oil found? A. Along the Atlantic Coast B. Along the border with the United States C. In western Canada<<<<<< D. Near the Arctic Ocean 2. The concept of multiculturalism encourages Canadians to A. embrace English...

World Geography
REVIEW 1.The forests of the Pacific Northwest are just one of the many different ______________ in the United States where many people work in the same industry. A. elevation regions B. political regions C. climate regions<<<<< D. economic regions 2.The ...

World Geography
REVIEW 1.Which of Canada’s regions has limited vegetation and freezing temperatures most of the year? A. Maritime B. Subarctic C. Tundra<<<<< D. Continental 2.NAFTA is a trade agreement between A. America, China, and India. B. America, Canada, and Mexico. C...

World Geography
REVIEW 1.What natural resource most attracted European traders to Canada? A. Timber<<<<< B. Animal furs C. Fish D. Whales 2.Which of the following doubled the size of the United States in 1803? A. The Civil War<<<<<<< B. The Louisiana ...

World Geography
REVIEW 1.Which of the following was one cause of the Civil War in the United States? A. The South wanted new states to allow slavery and the North did not. B. The North wanted new states to allow slavery and the South did not. C. The North opposed signing treaties with Native ...

World Geography
REVIEW 1.Which of the following has made American culture more accessible to the rest of the world? A. Scientific Research B. Imports C. The Internet D. Immigration<<<<< 2.Which of the major continental regions of the United States is best for farming? A. The ...

World Geography
REVIEW 1.Where is Canada’s population density highest? A. In the cities of Northern Canada B. In cities in central Canada<<<<<<< C. In cities along the United States border D. In cities along the Atlantic and Pacific Coasts 2.The highest elevations in...

World Geography
REVIEW 1.Canada currently ranks first in the world in which category? A. Total number of Internet users B. Percentage of college and university graduates<<<<<<<< C. Literacy rate of adult population D. Average unemployment among citizens 2.The Canadian ...

World Geography
REVIEW 1.Which of the following statements about the natural resources of the United States is most accurate? A. The many agricultural resources of the United States have made up for its lack of other resources.<<<<<<<<< B. U.S. industry and ...

World Geography
REVIEW 1.What type of information does a physical map show? A. Natural features<<<<<<< B. Countries or states C. Location of human features D. Distribution of human and physical features 2.In recent years, millions of Chinese workers have moved from ...

World Geography
REVIEW 1.How do lines of latitude and longitude help geographers study Earth? A. These lines show geographers the direction of Earth’s rotation around the sun. B. These lines help geographers see the difference between oceans and landforms on Earth’s surface. C. ...

World Geography
REVIEW 1.Demographers are scientists who study A. weather and climate. B. pollution. <<<<<<< C. human populations. D. ocean currents In any particular culture, an idea or way of doing things that is common to the culture is called a ____________. A. ...

World Geography
REVIEW 1.An area in which a single culture or cultural trait is dominant is called a ____________. A. culture B. cultural landscape <<<<<<<, C. norm D. culture region 2.Cultures often develop along with science and ____________. A. tools <<<<&...

World Geography
REVIEW 1.____________ spread cultural traits because they bring cultural traditions with them to their new homeland. A. Traders B. Explorers <<<<<<< C. Migrants D. Native Americans 2.People who live in poor, overcrowded urban areas, or _____________, are ...

World Geography
REVIWE 1.Using up resources is one of the negative effects of A. the birth rate. B. the death rate.<<<<<<<<< C. the infant mortality rate. D. rapid population growth. 2. The Prime Meridian and other imaginary north-south lines measure A. longitude.&...

World Geography
thank u for the help

World Geography
REVIEW Which ecosystem usually supports thick forests of deciduous trees? A. Tropical forest B. Temperate forest C. Savanna <<<<<<< D. Subarctic forest Love, death, peace, and war are examples of ____________ that relate to the entire world. A. paintings B...

Math
Triangle Lmn is similar to triangle xyz. Triangle LMN has a side of 5 and 3. The scale factor of triangle Lmn to triangle xyz is 2:5. What is triangle xyz's length? Helppppp Meeeeeeeeeee!!!

math
The point (5, -7) is dilated by a scale factor of 4 about the origin. Find the location of the new point. Show your work.

geometry
The scale factor is 5/4. Find the area of the pre-image if the area of the image is 150 in2.Show your work.

so it would be 144 cause 472-43=429 next you would divide 429 with 3 so 3 goes into 4 one time so put the 3 there then subtract 4-3=1 then you bring down the 2 and get 12!next thing you do is 3 goes into 12,4 times so you put the 4 next to the 1 and get 14.Your almost done!...

healh
Posture, ________, is maintained as a result of muscle contraction. A. Such as singing and painting B. Such as sitting and standing C. Such as jumping and skipping D. All of the above

thanks :)

Ideally, sustainable development should ___________. A)put the protection of the environment ahead of human needs B)provide for human needs at the expense of the environment C)use more natural resources to make goods to meet human needs D)preserve ecosystems while providing ...

math
20. Miguel is driving his motorboat across a river. The speed of the boat in still water is 11 mi/h. The river flows directly south at 2 mi/h. If Miguel heads directly west, what are the boat’s resultant speed and direction?

English
What was the conflict in "The People Could Fly.

Accounting
d. NSF check

english
I don't know. I'm stuck on that question.

Health

Chemistry
How would you separate a mixture of potassium chloride from copper metal?

bio
Relate how the arrangement of electrons determines an element’s reactivity

Bio
Relate how bonding leads to the formation of molecules and compounds.

math
If = 58° and p = 150 in, what is the value of n to the nearest tenth of an inch?

History
What rhetorical devices were used in Seom on the mount

economics
Dakota, Mark, and Lucy will not.....no one

math
Solve by the substitution method. What is the solution of the system? 3x+9y=48 -6x+y=56

History
the influence of the Enlightenment ideas caused what major event to happen in france ?

geometry
Find the measure of each interior angle using the given information quadrilateral RSTU with m<R=6x-4,m<S=2r+8 and how did you come up with answer?

geometry
When is the perpendicular bisector of a side of a regular n-gon also an angle bisector?

language arts
Complete the analogies by selecting the pair of words whose relationship most resembles the relationship of the pair in capitol letters. AFFABILITY:SMILE a. pain:grimace b. resilience:recovery c. turbulence:pseudonym d. abrasion:bruise (I think it is "a" but i just ...

language arts
Complete the analogies by selecting the pair of words whose relationship most resembles the relationship of the pair in capitol letters. SAGE:WISDOM a. author:anthology b. speaker:tirade c. acrobat:agility (I'm thinking c but I'm not sure) SCOLDING:TIRADE a. sage:...

soc. stud.
well, yes... but still, burning a doll? it still sounds a little extreme and crazy.

soc. stud.
im not sure- i cant really think of anything that would drive me to burning a doll that represents someone.

soc. stud.
how could you use effigies today to have your voice heard?

soc. stud.
how could you use the Sons of Liberty today to have your voice heard?

math
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