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Mely

Questions and answers by visitors named Mely

Questions (66)

What is the probability of passing a 10-item multiple choice quiz, if there are 4 choices, A to D for every question, and if the
1. 5 answers
2. 2,772 views
Given colchicine's properties, could this compound be used to treat cancer?
1. 1 answer
2. 292 views
1. Why are cells from a blastula used to examine mitosis?2. How fast do you think cells divide when an embryo is developing
1. 1 answer
2. 1,073 views
How do the sizes of the oocytes differ as they move from the follicular stage towards the mature graafian follicle?
1. 1 answer
2. 356 views
How do sperm and eggs differ in size? (consider size and the quatity of each gamete). Explain possible reasons for these
1. 3 answers
2. 479 views
Find dy/dxy=e^(4xtan2x)
1. 1 answer
2. 288 views
Evaluate the Integral1. integral of (x^9+7x^6-1)/x^8 dx 2. integral of x^(1/3)*(42-x)^2 dx 3. integral of 9x+5/7x^3 dx
1. 1 answer
2. 306 views
Find the limitlimit as x approaches 1 of (2-x)^3tan[(pi/2)x]
1. 1 answer
2. 372 views
Find the limitlimit as x approaches 1 of (2-x)^3tan[(pi/2)x]
1. 4 answers
2. 426 views
Evaluate the Integral1. integral of (x^9+7x^6-1)/x^8 dx 2. integral of x^(1/3)*(42-x)^2 dx 3. integral of 9x+5/7x^3 dx
1. 1 answer
2. 318 views
Find the absolute maximum and minimum values of f on the given closed interval, and state where those values occur.f(x)=5x-10sin
1. 1 answer
2. 428 views
estimate the absolute maximum and minimum values of f if any, on the stated interval, and then use calculus methods to find the
1. 1 answer
2. 532 views
A rectangle is to be inscribed in a right triangle having sides of length 36 in, 48 in, and 60 in. Find the dimensions of the
1. 3 answers
2. 969 views
An open box is to be made from a 21 ft by 56 ft rectangular piece of sheet metal by cutting out squares of equal size from the
1. 3 answers
2. 3,681 views
A fertilizer producer finds that it can sell its product at a price of p=5000-1.0x dollars per unit when it produces x units of
1. 4 answers
2. 1,362 views
Verify that the hypotheses of Rolle’s Theorem are satisfied for f(x)=6cosx on the interval [9pi/2,11pi/2] and find all values
1. 3 answers
2. 604 views
Verify that the hypotheses of the Mean-Value Theorem are satisfied on the given interval, and find all values of c in that
1. 1 answer
2. 915 views
A container with square base, vertical sides, and open top is to be made from 2700 square feet of material. Find the dimensions
1. 4 answers
2. 4,471 views
A CERTAIN MIXTURE CALLS FOR 6MG OF AMOXYCILLIN TO 15 LITERS OF WATER.?HOW MANY LITERS OF WATER WOULD YOU NEED FOR 12MG OF
1. 1 answer
2. 384 views
how much interest will mary owe if she borrows $2000 at a rate of 6% for 2 years?
1. 2 answers
2. 1,005 views
A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 3.7 cm. Its mass is 1.3 kg. Calculate the density of
1. 5 answers
2. 4,557 views
A particular brand of gasoline has a density of 0.737 g/mL at 25 Celcius. How many grams of this gasoline would fill a 12.9 gal
1. 5 answers
2. 2,745 views
The density of iron is 7.87 . What is the mass of a l* 4.00cm * 1.00 cm block of iron?
1. 1 answer
2. 399 views
The density of iron is 7.87 . What is the mass of a (variable l)* 4.00cm * 1.00 cm block of iron?
1. 5 answers
2. 518 views
There are exactly 60 seconds in a minute, there are exactly 60 minutes in an hour, there are exactly 24 hours in a mean solar
1. 4 answers
2. 1,271 views
Total U.S. farmland occupies 954 million acres. How many square miles is this? (1 acre = 43,560 ft^2 , 1 mile= 5280 ft ).
1. 4 answers
2. 1,417 views
There are exactly 60 seconds in a minute, there are exactly 60 minutes in an hour, there are exactly 24 hours in a mean solar
1. 2 answers
2. 562 views
The speed of light is 3.00 times 10^8~m/s. How fast is this in miles per hour (miles/h)?
1. 1 answer
2. 591 views
While in Europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per
1. 4 answers
2. 8,496 views
The proton has a radius of approximately 1.0 times 10^{ - 13} cm and a mass of 1.7 times 10^{ - 24} g. Determine the density of
1. 4 answers
2. 1,537 views
A certain element forms an ion with 54 electrons and a charge of +2. Identify the element.
1. 4 answers
2. 7,240 views
You find 30 coins in your drawer. 20 % of the coins are nickels. How much money you have in nickels?
1. 1 answer
2. 346 views
Phosphoric acid reacts with magnesium carbonate to produce? When you predict the products and write a balanced equation the
1. 3 answers
2. 2,547 views
What is the oxidation number of sulfur in SO<sub>4</sub><sup>-2</sup>?
1. 2 answers
2. 732 views
What is the molar concentration of 2000. mL of aqueous solution containing 125 g of glucose, C6 H12O6? Molar mass 180.15 g/mol.
1. 1 answer
2. 471 views
A gas with a temperature of 31.3 oC and a volume of 109.2 L is compressed to 11.7 L. What will be the new temperature? Report
1. 1 answer
2. 307 views
A tank has a pressure of 20.3 atm at a temperature of 22.6 oC. After heating, the temperature rises to 52.7 oC. What is the new
1. 1 answer
2. 353 views
2.633 ounces of aluminum were added to a graduated cylinder containing 16.71 mL of water. What is the new water level after
1. 1 answer
2. 485 views
What is the molar concentration of 2000. mL of aqueous solution containing 125 g of glucose, C6 H12O6? Molar mass 180.15 g/mol.
1. 2 answers
2. 646 views
Naturally occurring iodine has an atomic mass of 126.9045. A 12.3849 -g sample of iodine is accidentally contaminated with
1. 6 answers
2. 3,326 views
A 8.13 g sample of HCN is found to contain 0.301 g of H and 4.22 g of N.Find the mass of carbon in a sample of HCN with a mass
1. 3 answers
2. 676 views
What is the mass, in grams, of each of the following?a) 2.4×10−3 mol Sb b) 3.59×10−2 mol Ba c) 43.6 mol Xe d) 1.4 mol W
1. 4 answers
2. 1,435 views
Calculate the mass, in grams, of each of the following.a) 1.2×10^23 gold atoms b) 2.78×10^22 helium atoms c) 2.0×10^23 lead
1. 4 answers
2. 1,207 views
What is the name of the following organic compound?CH_3CH_2CCCH_2CH_2CH_3
1. 2 answers
2. 601 views
Calculate the mass percent composition of carbon in each the following carbon compounds.a) C_4H_10 b) C_6H_10 c) CCl_2F_2 d)
1. 2 answers
2. 547 views
Calculate the mass percent composition of carbon in the following carbon compound.C_8H_13O_5N I got 0.4729 as an answer but it's
1. 3 answers
2. 570 views
Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition.nitr
1. 2 answers
2. 707 views
Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition.vani
1. 1 answer
2. 643 views
A sugar crystal contains approximately 1.7×10^17 sucrose (C12H22O11) moleculesWhat is its mass in mg?
1. 4 answers
2. 1,392 views
Calculate the mass in g of each of the following.a. 2.3×10^22 H2O molecules b. 6.16×10^20 SO3 molecules c. 5.0×1025 O3
1. 2 answers
2. 1,313 views
A sugar crystal contains approximately 1.7×10^17 sucrose (C12H22O11) moleculesWhat is its mass in mg?
1. 4 answers
2. 3,092 views
Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition.vani
1. 2 answers
2. 809 views
Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition.nitr
1. 5 answers
2. 6,740 views
How much heat is required to warm 1.60 L of water from 26.0 degree C to 100.0 degree C? (Assume a density of {1.0 g/ml for the
1. 3 answers
2. 649 views
What mass of natural gas CH_4 must you burn to emit 259 kJ of heat?
1. 2 answers
2. 564 views
How much heat is required to warm 1.30 L of water from 30.0 degrees C to 100.0 degrees C?(Assume a density of 1.0 g/mL for the
1. 4 answers
2. 1,294 views
95.0 mL of H_2O is initially at room temperature (22 degree C). A chilled steel rod at 2 degree C is placed in the water. If the
1. 3 answers
2. 1,009 views
Sulfur forms the following compounds with chlorine. Identify thetype of hybridization for the central sulfur atom in each
1. 3 answers
2. 1,421 views
A molecule with the formula AB(3) has a trigonal planar geometry.How many electron groups are on the central atom (A)?
1. 1 answer
2. 780 views
Lewis dot structure of IF4+
1. 2 answers
2. 1,194 views
What is the lewis dot structure for IBr4-?
1. 1 answer
2. 1,218 views
What is the lewis dot structure of IF2-?
1. 2 answers
2. 1,274 views
In principle, anytime someone jumps up, the earth moves in the opposite direction. To see why we are unaware of this motion,
1. 2 answers
2. 624 views
Graph x^2+y^2=16
1. 1 answer
2. 355 views
what is your reaction on the first and second opium war?
1. 1 answer
2. 292 views
What is the otter's acceleration if it increases its speed 3 m/s each second for 4 seconds
1. 1 answer
2. 309 views

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