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Questions (2,661)
An electromagnet is the most powerful type of magnet there is . It is a magnet with a current running through it that can be
50 answers
asked by
Anonymous
26,591 views
Solve the following inequalities, if it is known that function g is decreasing on its domain.
1. g(3x^2−2x)≥g(3x−2), Dg=ℝ
5 answers
2,837 views
Hydrochloric acid and sodium hydroxide react to produce water and sodium chloride in an endothermic reaction. Which statement
5 answers
2,244 views
One of the roots of the equation x^2−6x+q=0 is 4.5. Find the other root and the value of the coefficient q.
4 answers
2,447 views
1.Suppose 10 atoms of carbon (C) react with 20 atoms of oxygen (O). According to the Law of Conservation of Matter, how many
76 answers
asked by
Anonymous
26,327 views
Do you love to discover what the Earth is made of and explore how it changes over time? If so, someday you could become a
5 answers
1,251 views
If a committee of 3 is to be selected from a group of 15 students and 6 teachers, then the
number of different possible
4 answers
2,026 views
Last week, Baldwin's Bakery had sales of $8,899. All sales were either made in the store or online. In-store sales brought in 10
5 answers
715 views
Unit 6 Lesson 7
1. Which of the following is a risk specific to online gaming? chatting with people you don't know** role-playing
43 answers
20,482 views
If Mary reads 90 pages a day, it will take her more than 4 days to finish reading a storybook. If she reads 80 pages a day, she
5 answers
1,375 views
Jack and Bill had $440 altogether. Bill had $20 more than Jack. When Jack spent 1/3 the amount of money spent by Bill, he had 3
4 answers
379 views
the romantic period of music was known for?
A. vibrant and unexpected key changes B. little use of dynamic changes. C. few
33 answers
asked by
Anonymous
9,894 views
Which statement about nitrogen (N) and phosphorus (P) is correct?
They have the same number of valence electrons. They have the
24 answers
9,171 views
What is the volume in cubic inches of a rectangular prism with a height of 3 2/3 in a length of 2 1/6 in and they width of 1 1/2
1 answer
152 views
During a shopping trip, Cindy spent half of her money in the first shop. She spent $2 more than half of her remaining money in
4 answers
740 views
Which of the following changes did John McLoughlin make to the Hudson Bay Company? Select all that apply.
A. He broke off trade
4 answers
742 views
If a right triangle has a leg with length 12 and the hypotenuse is 16, how long is the other leg? Round to the nearest tenth if
1 answer
461 views
What is the word for the last meal of the day in Spanish?
(1 point) la cena el almuerzo la sal el desayuno
11 answers
91 views
What is the correct way to ask “Do you want to go to the movies with me this weekend?” in Spanish?
(1 point) ¿Quieres ir
9 answers
77 views
Jeremy had 34 nickels and quarters totaling $4.10. He had two less than twice as many nickels as quarters. How many of each did
5 answers
835 views
How many grams of NH3 can be produced form the reaction of 28 g of nitrogen and 25g of hydrogen?
3 answers
909 views
Solve the following inequalities, if it is known that function f is increasing on its domain.
1. f(x^3−4x)≥f(3x^2+6x), Df=ℝ
5 answers
2,129 views
1.)CaCO3→CO2+CaO
A scientist heats 30 grams of calcium carbonate (CaCO3) in the chemical reaction shown. What is the
73 answers
30,408 views
A piece of square paper has a perimeter of 32 centimeters. Nicky's dog, Rocky, tore off 1/4 of the paper. What is the area of
4 answers
1,358 views
1/3 of the 6 dozen fruits in a fruit seller's cart are apples.If 1/4 of all the fruits are oranges and the rest of the fruits
2 answers
565 views
I am very confused
Researchers plotted a distribution curve for leg length in a population of birds, with length from short to
9 answers
asked by
Anonymous
3,715 views
Minty sweets are sold in packets of 40
Lemon sweets are sold in packets of 56. Andy wants to buy the same numbers of Minty sweets
4 answers
509 views
Birds and Dinosaurs
Though we think of dinosaurs as being extinct, recent research suggests that their modern relatives live
6 answers
1,535 views
Desmond had some pebbles. He gave 123 pebbles to Jason and 3/5 of the remaining pebbles to Ali. He was left with 1/4 of the
4 answers
502 views
The durian is an Asian fruit that is known for its incredible stench. Food writer Richard Sterling describes its odor as
7 answers
2,150 views
Helen and Sam had some stamps. When Helen gave away 360 stamps and
Sam gave away 48 stamps, the number of stamps Helen had was
4 answers
212 views
Andre and Ryan like to share stickers. If Andre gives 10 stickers to Ryan, the ratio of Andre to Ryan's stickers will be 1: 8.
4 answers
394 views
What is the measure of the exterior angle x? The angles are 37 and 42?
2 answers
547 views
Why is the region of Eurasia home to 80 percent of humanity?
(1 point) Temperate climates are inhospitable for humans and
7 answers
56 views
Why do mountain streams not meander and maintain the same course?
A) The water moves very fast, keeping it on a straight path. B)
1 answer
18 views
Why do mountain streams not meander and maintain the same course?
A) The water moves very fast, keeping it on a straight path. B)
1 answer
21 views
A book is advertised at $500 with an inclusive 5% GST. What is the original price of the book?
1 answer
438 views
Jenn made 12 field goals. These were 3/4 of her field goal attempts. Write and solve an equation to determine her number of
2 answers
497 views
I need help factoring 2y^2-2y-24. The answer I got was 2(y+3)(y+3). However the correct answer is 2(y+3)(y-4).
1 answer
261 views
Can someone please help me understand box-and-whisker plots? I get really confused on what each thing is and how to plot it.
2 answers
545 views
In the following chemical reaction between H2 and Cl2 to produce HCl, what is the mass of HCl produced with 0.35g of H2
4 answers
1,744 views
Hello, I really don't understand how to find the grams of moles in some of these reactions. If someone could help I would
2 answers
599 views
A bicycle that usually sells for $230 is on sale for 15% off. Find the sale price.
Is this correct 230/25=9.2 230-9.2=220.8
4 answers
1,095 views
High-pressure sodium vapor lamps are used in street lighting. The two brightest lines in the sodium spectrum are at 589.00 and
4 answers
2,339 views
What is the solution and magnitude of the following problem:
(x^4)-1=0 (x^3)+1=0 (x^3)-1=0 (x^6)-1=0 (x^6)+1=0
3 answers
396 views
How many grams of a solid mixture containing strontium chloride would one need to make 558 mL of a 0.100 M strontium chloride
4 answers
2,326 views
sulfuric acid can be prepared by a multistep process summarized as: 2 SO2 + O2 + 2 H2O--> 2 H2SO4 What mass of sulfuric acid
4 answers
1,625 views
Write the reactants and products of the reaction between zinc and oxygen. Include the half-reactions. What type of reaction is
2 answers
592 views
Calculate the wavelength of nitrogen molecule travelling with a speed of 500 m/s
1 answer
392 views
Please help with these questions
question: Oxygen consumption by a growing culture of Escheri... oxygen consumption by a growing
2 answers
575 views
Please help with these questions
question: Oxygen consumption by a growing culture of Escheri... oxygen consumption by a growing
2 answers
625 views
Please help with these questions
question: Oxygen consumption by a growing culture of Escheri... oxygen consumption by a growing
1 answer
497 views
Please help with these questions
question: Oxygen consumption by a growing culture of Escheri... oxygen consumption by a growing
2 answers
566 views
A car is traveling with constant 20.0 ms for 2.0mins constant rate 0.50 how far can travel for first part of the trip
How long
1 answer
433 views
Determine the order of reducing agents (strongest to weakest).
A) Mn(s) > Zn(s) > Cr(s) > Fe(s) B) Fe(s) > Cr(s) > Zn(s) > Mn(s)
3 answers
609 views
PLEASE CHECK MY ANSWERS :)
answers marked below 1. Which of Earth’s spheres contains most of its mass? (1 point) atmosphere ***
10 answers
3,336 views
Consider the function on the interval
(0, 2π). f(x) = x + 2 sin x relative maximum (x, y) = relative minimum (x, y) = From when
4 answers
1,817 views
Ross pours water at 6.0 C into a container with a pressure of 23. torr. He then boils the water to a temperature of 34 C. The
1 answer
354 views
Manuel Munoz "leave your name at the border" and Maya Angelou "Whats your name girl" Discuss the importance of names as it
3 answers
2,008 views
All edges of a cube are expanding at a rate of 8 centimeters per second.
(a) How fast is the volume changing when each edge is 4
4 answers
4,267 views
At a sand and gravel plant, sand is falling off a conveyor and onto a conical pile at a rate of 6 cubic feet per minute. The
2 answers
1,137 views
Were loyalists refugees? Why or why not? In what way did their experience as farmers make life easier for them in Canada?
1 answer
379 views
Which of these will have a volume of 22.4 L at STP?
A) 12.01 g of C(s) B) 16.4 g of CH4(g) C) 36.46 g of HCl(aq) D) 32.05 g of
5 answers
3,628 views
A hamster sits 0.10 m from the center of a lazy Susan of negligible mass. The wheel has an angular velocity of 1.0 rev/s. How
2 answers
715 views
A wheel with rotational inertia I initially rotates with a angular speed ωi . A torque is applied, speeding the wheel up to
1 answer
640 views
The game of Jacks is played with pieces like those shown to the right, consisting of four small spheres at the ends of two
1 answer
636 views
A potter’s wheel with rotational inertia 24 kg m2 is spinning freely with no friction at 50 rpm. A piece of clay is dropped
1 answer
1,106 views
A block and a spool have the same mass, and are each pulled across a level, frictionless surface by a string, as shown to the
3 answers
1,194 views
A block and a spool have the same mass, and are each pulled across a level, frictionless surface by a string, as shown to the
3 answers
1,716 views
what are the intercepts of the graph of f(x)=4cos^2 -3 on the interval [0, 2pi]?
2 answers
1,249 views
What does it take to win a tug of war?
PUNCHLINE • Algebra • Book A 2006 March Mathworks
4 answers
1,601 views
The point C(-3,1) is translated to the left 4 units and up 1 unit. Write the rule for this translation. What are the
4 answers
2,198 views
A sample of sand initially at 22.3°C absorbs 1.34 x 10^3 J of heat. The final temperature of sand is 67.8 °C. What is the (in
3 answers
1,738 views
The enthalpy of combustion of benzoic acid (C6H5CO2H) is -3228 kJ/mol. The burning of 1.698 g of benzoic acid in a calorimeter
2 answers
1,456 views
Write the balanced chemical reaction (showing appropriate symbols and states) for the chemical reaction with enthalpy change
2 answers
583 views
Find the derivative of (3x+17)^13 (14x+6)^11x^-4/5 / (20x +3)^-9
using logarithmic differentiation. Assume x > 0.
2 answers
472 views
A 20m long ladder is leaning against a wall. The top of the ladder is sliding down the wall at a constant speed of 2m/s. How
2 answers
722 views
16L:28L what is the ratio of a fraction in simplest form with whole numbers in the numerator and denominator
4 answers
754 views
A ball with massm1=4.0 kgam is traveling to the right with the velocityv1=6.0m/s another ball with mass m2=2.0kh is traveling to
1 answer
393 views
Of the following solids, which would have the highest melting point? Why?
a. LiF b. LiCl c. LiBr d. LiI e. CsI My guess is LiF
2 answers
981 views
Two dogs, Rover and Fido, run on a level frictionless surface. Rover runs eastward with a momentum of 24 kg . m/s, and Fido runs
3 answers
2,998 views
Show the steps needed to determine the energy in a red photon of 7.0 x 10^2 nm.
E= h * (c/λ) 6.62e-34 * (3e8/2e-7) 2.837e-19 J?
3 answers
301 views
Give the formal charge on the sulfur atom in a Lewis structure for the sulfate ion in which every atom satisfies the octet rule.
3 answers
1,830 views
An unknown metal, m, forms an ionic compound with the formula, M2S3. Which formula represents the compound formed by the metal
4 answers
3,156 views
Which compound has the highest lattice energy?
a) CaO b) LiF c) MgO d) NaF I am guessing B because Lithium has the lowest energy
2 answers
871 views
A 10.000 g sample of water contains 11.19% H by mass. What would by the %H in a 20.000 g sample of water?
I got 22.38%, would
7 answers
3,640 views
What is the empirical formula for a compound of sodium and oxygen that contains 59% by mass?
I am guessing it would be NaO
4 answers
1,563 views
What mass of NO2 is formed by the complete reaction of 2 mol O3 with excess NO in the reaction?
O3 + NO --> O2 + NO2 I know the
4 answers
2,921 views
What is the net ionic equation form the reaction between Na2S(aq) and Pb(HCO3)2(aq)?
Just wanting to make sure this correct:
3 answers
1,806 views
Which element is oxidized and which element is reduced in this redox reaction?
CO2(g) + H2(g) --> 2CO2(g) + H2O(g) Is Oxygen
2 answers
1,174 views
Which electron transition in a hydrogen atom will emit a photon with the longest wavelength?
n = 2 to n = 1 n = 3 to n = 1 n = 1
3 answers
1,428 views
What volume of 0.200 M K2C2O4 is required to completely react with 30.0 mL of 0.100 M Fe(NO3)3?
2Fe(NO3)3 + 3K2C2O4 -->
3 answers
2,851 views
Which response presents ions in order of increasing atomic radius?
a) smallest Cl-, K+, Na+ largest b) smallest Cl-, Na+, K+
6 answers
898 views
How much heat is absorbed when a 35.0 g aluminum block increases in temperature from 23°C to 33°C?
Specific heat of Al: 0.900
2 answers
517 views
According to kinetic-molecular theory, particles of an ideal gas
a) are motionless b) have zero masses c) attract each other d)
3 answers
2,071 views
What is the process to calculate ΔH° for the reaction?
O2(g) + 2NO(g) --> N2O4(g) O2(g) + 2NO(g) --> 2NO2(g) ΔH°1 N2O4(g) -->
4 answers
4,069 views
A container at room temperature is filled with equal moles of O2(g), NO2(g) and He(g). The gases slowly leak through a pinhole
4 answers
796 views
Water condenses on the grass in the early morning help
2 answers
1,148 views
A spherical bowling ball radius 0.1 m and mass4.0 kg is rolling without slipping to ward the ball rack assume h=0.45m the liners
1 answer
403 views
A disk of radius 30 cm is spinning about it axis at 60rmp it deacelerate at a constant rate of 2.0 rad/s^2 until it reaches 20
1 answer
392 views
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