Mely

This page lists questions and answers that were posted by visitors named Mely.

Questions

The following questions were asked by visitors named Mely.

How do sperm and eggs differ in size? (consider size and the quatity of each gamete). Explain possible reasons for these differences.

Find dy/dx y=e^(4xtan2x)

Evaluate the Integral 1. 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

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 rectangle with greatest area assuming the rectangle is positioned as in the accompanying figure. right triangle: hypotenuse- 60in...

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 four corners and bending up the sides. Find the maximum volume that the box can have.

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 fertilizer. The total production cost (in dollars) for units is c(x)=150000+1250x+0.25x^2 If the production capacity of the fir...

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 of c in this interval that satisfy the conclusion of the theorem.

A container with square base, vertical sides, and open top is to be made from 2700 square feet of material. Find the dimensions (length × width × heigth) of the container with greatest volume.

A CERTAIN MIXTURE CALLS FOR 6MG OF AMOXYCILLIN TO 15 LITERS OF WATER.? HOW MANY LITERS OF WATER WOULD YOU NEED FOR 12MG OF AMOXYCILLIN?

how much interest will mary owe if she borrows $2000 at a rate of 6% for 2 years?

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 the metal.

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 tank?

The density of iron is 7.87 . What is the mass of a l* 4.00cm * 1.00 cm block of iron?

The density of iron is 7.87 . What is the mass of a (variable l)* 4.00cm * 1.00 cm block of iron?

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 day, and there are 365.24 solar days in a solar year. Find the number of seconds in a solar year.

Total U.S. farmland occupies 954 million acres. How many square miles is this? (1 acre = 43,560 ft^2 , 1 mile= 5280 ft ).

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 liter and your car's gas mileage is 39.0 mi/gal? Assume that 1euro= 1.26; dollars.

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 a proton. For a sphere V = (4/3)times pi r^3.

A certain element forms an ion with 54 electrons and a charge of +2. Identify the element.

You find 30 coins in your drawer. 20 % of the coins are nickels. How much money you have in nickels?

Phosphoric acid reacts with magnesium carbonate to produce? When you predict the products and write a balanced equation the coefficient of phosphoric acid is a.1 b.2 c.3 d.6 e.4

What is the oxidation number of sulfur in SO<sub>4</sub><sup>-2</sup>?

What is the molar concentration of 2000. mL of aqueous solution containing 125 g of glucose, C6 H12O6? Molar mass 180.15 g/mol. Report your answer to three significant figures.

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 your answer to one decimal place.

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 pressure?

2.633 ounces of aluminum were added to a graduated cylinder containing 16.71 mL of water. What is the new water level after adding the aluminum? The density of aluminum is 2.702 g/ mL.

Naturally occurring iodine has an atomic mass of 126.9045. A 12.3849 -g sample of iodine is accidentally contaminated with 1.00070 g of ^129 I, a synthetic radioisotope of iodine used in the treatment of certain diseases of the thyroid gland. The mass of...

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 of 3.39 g.

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

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 atoms d) 7.6×10^21 uranium atoms

What is the name of the following organic compound? CH_3CH_2CCCH_2CH_2CH_3

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) C_8H_13O_5N

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 wrong. Please help me.

Calculate the empirical formula for each of the following natural flavors based on their elemental mass percent composition. nitroglycerin (used medically as a vasodilator to treat heart conditions): C 15.87% H 2.22% N 18.50% O 63.41%. Express your answer...

A sugar crystal contains approximately 1.7×10^17 sucrose (C12H22O11) molecules What is its mass in mg?

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 molecules d. 9.82×1019 CCl2F2 molecules

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 water.)

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 final temperature of the system is 21.3 degree C, what is the mass of the steel bar?

Sulfur forms the following compounds with chlorine. Identify thetype of hybridization for the central sulfur atom in each compound. SCl2,SCl6,SCl4 a. sp b. sp2 c. sp3 d. sp3d e. sp3d2

Lewis dot structure of IF4+

What is the lewis dot structure of IF2-?

In principle, anytime someone jumps up, the earth moves in the opposite direction. To see why we are unaware of this motion, calculate the recoil speed of the earth when a 65.0 kg person jumps upward at a speed of 1.70 m/s. v=?

Graph x^2+y^2=16

what is your reaction on the first and second opium war?

What is the otter's acceleration if it increases its speed 3 m/s each second for 4 seconds

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 passing mark is 8/10, assuming that you guessed the answers to all the questions?

Answers

The following answers were posted by visitors named Mely.

it is all one equation, it's (2-x)to the power of 3tan[(pi/2)x]

is this correct .737g/mL * 1mL/0.000264...gal*12.9gal=35,989,045.5 grams

How do you turn 30 degrees to radians?