04/24/17

Fresh mushrooms are grown in a farm
Fresh mushrooms are grown in a farm. Some of these are dried in an oven. A batch of fresh mushrooms weighs 5kg. The amount of water in these mushrooms is 92% of their weight.   (a) What is the... more
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04/23/17

Ideal gas problem- chemistry.
A flask of fluorine gas is connected to the manometer below ( image of mercury manometer not shown) at 29 degrees C. Calculate the pressure in atm, the molar volume, and the density of the flask if... more
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04/23/17

the area of a blackboard is 24cmsquare and its lenghth is 8m.what is the perimeter of the blackboard?
area  of a blackboard is 24m and its lenghth is 8m.what is the perimeter of the black board?
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04/23/17

scientists find that the height of a person in centimeters, is related to the length of the persons femur bone in centimeters.
according to the formula, what is the height of a femur bone of 48.6cm in length.   the formula: h= 69.09 + 2.24f   h= the height of a person   f= length of the persons femur bone
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04/22/17

Write the dilution ratio that was performed, as a fraction in lowest terms
A 20% solution of NaCl in H2O is diluted, by adding distilled water, to a final concentration of 6% NaCl. A 20% solution of NaCl in H2O is diluted, by adding distilled water, to a final... more
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04/22/17

find the overall dilution ratio and the total amount of water added
A 24% w/v stock solution of NaCl is diluted with water according to a 1:10 dilution ratio, then again by a 5:6 dilution ratio. a) Determine the overall dilution ratio (in lowest terms) performed:... more
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04/22/17

a train travels 146 miles in 2 hours, at this rate how many miles will it travel in 3.5 hours
It has to do with solving proportions dsbuhbuhbdshubifbvdi  
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04/22/17

A 9ft board is cut into three pieces. 2nd piece is 2x as long as 1st. 3rd piece is 1 ft longer than 1st piece. Find the lengths of each of the three pieces.
find the lengths of the three pieces.
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04/22/17

a school is planning a car wash to raise $600. how much should the school charge per car to raise exactly $600
there will be 8 teams each team will wash 2 cars per hour the car was will last 5 1/2 hours each team will take two 15-minute breaks
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04/22/17

The half-life of polonium-210 is 43 days. How long will it take for a sample of this substance to decay to 17% of its original amount?
Use the exponential decay model to solve this exercise.A=A0ekt Hint: When you find k, round it to 6 decimal places and use that value to answer the question.ANSWER: It will take about ___?___days.
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04/22/17

Fraction Word Problem
3500kg of Sand was bought. 1/2 was used on a building project, 1/5 on a fish pond and 1/8 on a splash pool. How much of the sand is left? 
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04/22/17

MATH!!!!!!!
The hypotenuse of a right triangle is twice the length of one of the legs. The length of the other leg is √243 feet. Find the lengths of the leg and hypoten
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04/22/17

Word Problem help please?
Please help me solve this word problem. A construction truck can carry 20 000kg of compost at a time. There are 25000. 15kg compost bags ready for delivery. How many trips will the truck need to do... more
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04/21/17

Craig has a rectangular wooden desk that measures 799 in by 245 in that he wants to put a string of lights around. What length of lights should he buy?
Help on how to measure this type of question 
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04/21/17

Crystal makes a $57,499 salary and is paid weekly. What is Crystals net pay each week?
Crystal makes a $57,499 salary and is paid weekly. What is Crystals net pay each week?
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04/21/17

making a 1mg/ml solution
I have a stock powder that says it is 278.31 g/mol.  I need to make a 50 ml solution that is 1mg/ml.  How much powder do I need to add to the 50ml flask?
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04/20/17

what are three ways to recognize if a single displacement reaction has taken place?
 Single Displacement question
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04/20/17

The water hating hydrophobic tail of the phospholipid bilayer face the outside of the cell membrane
3.2 packet from otters Christian biology workbook
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04/20/17

how many liters of ammonia gas will be produced when 5 moles of ammonium hydroxide decompose
We need to have balanced equation, mole ratio and volume ratio. 
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04/19/17

To increase the solubility of a gas at constant temperature from 22 g/L, at 2.1 atm, to 30 g/L, the pressure would have to be increased to what?
Chemistry help please I am doing a review for class
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04/19/17

the machine fills 250 bottles every 20 minutes . create a graph the shows the bottles y the machined filled in x minutes ?
i dont understand the question because its asking to find how many bottles they used for 2o minutes
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04/19/17

Identify where on the phase diagram the following properties of a material can be determined
Which one goes with which one  Sublimation curve  Vaporization curve  fusion curve    temperature and pressure at which a substance sublimes temperature and pressure at which a substance... more
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04/18/17

explain this reaction
An important industrial process is refining iron ore in a blast furnace. Carbon trades places with Iron metal from Iron (III) oxide to produce pure Iron and carbon dioxide gas.
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04/18/17

what element displaces the iron and by looking at the location if the element on the periodic table. Classify he element as a metal, non metal or metalloid
An important industrial process is refining iron ore in a blast furnace. Carbon trades places with Iron metal from Iron (III) oxide to produce pure Iron and carbon dioxide gas.
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04/18/17

what type of reaction is this?
An important industrial process is refining iron ore in a blast furnace. Carbon trades places with Iron metal from Iron (III) oxide to produce pure Iron and carbon dioxide gas.
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