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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. 3 answers
2. 2,871 views
What is the otter's acceleration if it increases its speed 3 m/s each second for 4 seconds
1. 1 answer
2. 339 views
what is your reaction on the first and second opium war?
1. 1 answer
2. 323 views
Graph x^2+y^2=16
1. 1 answer
2. 384 views
In principle, anytime someone jumps up, the earth moves in the opposite direction. To see why we are unaware of this motion,
1. 1 answer
2. 672 views
What is the lewis dot structure of IF2-?
1. 1 answer
2. 1,319 views
What is the lewis dot structure for IBr4-?
1. 0 answers
2. 1,263 views
Lewis dot structure of IF4+
1. 1 answer
2. 1,237 views
A molecule with the formula AB(3) has a trigonal planar geometry.How many electron groups are on the central atom (A)?
1. 0 answers
2. 832 views
Sulfur forms the following compounds with chlorine. Identify thetype of hybridization for the central sulfur atom in each
1. 1 answer
2. 1,484 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. 2 answers
2. 1,079 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. 3 answers
2. 1,336 views
What mass of natural gas CH_4 must you burn to emit 259 kJ of heat?
1. 0 answers
2. 591 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. 2 answers
2. 688 views
Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition.nitr
1. 3 answers
2. 6,799 views
Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition.vani
1. 1 answer
2. 860 views
A sugar crystal contains approximately 1.7×10^17 sucrose (C12H22O11) moleculesWhat is its mass in mg?
1. 1 answer
2. 3,154 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. 1 answer
2. 1,372 views
A sugar crystal contains approximately 1.7×10^17 sucrose (C12H22O11) moleculesWhat is its mass in mg?
1. 3 answers
2. 1,439 views
Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition.vani
1. 0 answers
2. 686 views
Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition.nitr
1. 1 answer
2. 756 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. 2 answers
2. 628 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. 1 answer
2. 595 views
What is the name of the following organic compound?CH_3CH_2CCCH_2CH_2CH_3
1. 1 answer
2. 639 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. 2 answers
2. 1,276 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. 2 answers
2. 1,466 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. 1 answer
2. 734 views
Naturally occurring iodine has an atomic mass of 126.9045. A 12.3849 -g sample of iodine is accidentally contaminated with
1. 5 answers
2. 3,409 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. 700 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. 538 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. 386 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. 346 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. 519 views
What is the oxidation number of sulfur in SO<sub>4</sub><sup>-2</sup>?
1. 1 answer
2. 767 views
Phosphoric acid reacts with magnesium carbonate to produce? When you predict the products and write a balanced equation the
1. 1 answer
2. 2,617 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. 376 views
A certain element forms an ion with 54 electrons and a charge of +2. Identify the element.
1. 3 answers
2. 7,314 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. 2 answers
2. 1,593 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. 2 answers
2. 8,577 views
The speed of light is 3.00 times 10^8~m/s. How fast is this in miles per hour (miles/h)?
1. 0 answers
2. 628 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. 0 answers
2. 598 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. 2 answers
2. 1,480 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. 1,329 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. 4 answers
2. 573 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. 434 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. 4 answers
2. 2,813 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. 4 answers
2. 4,632 views
how much interest will mary owe if she borrows $2000 at a rate of 6% for 2 years?
1. 1 answer
2. 1,044 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. 428 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. 2 answers
2. 4,554 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. 0 answers
2. 969 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. 2 answers
2. 662 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. 2 answers
2. 1,432 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. 1 answer
2. 3,746 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. 2 answers
2. 1,038 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. 0 answers
2. 586 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. 0 answers
2. 485 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. 345 views
Find the limitlimit as x approaches 1 of (2-x)^3tan[(pi/2)x]
1. 3 answers
2. 463 views
Find the limitlimit as x approaches 1 of (2-x)^3tan[(pi/2)x]
1. 0 answers
2. 408 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. 0 answers
2. 337 views
Find dy/dxy=e^(4xtan2x)
1. 1 answer
2. 312 views
How do sperm and eggs differ in size? (consider size and the quatity of each gamete). Explain possible reasons for these
1. 2 answers
2. 527 views
How do the sizes of the oocytes differ as they move from the follicular stage towards the mature graafian follicle?
1. 0 answers
2. 384 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. 0 answers
2. 1,131 views
Given colchicine's properties, could this compound be used to treat cancer?
1. 0 answers
2. 323 views

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