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Questions Asked on May 2, 2020

Determine the [OH−] of a solution that is 0.130 M in CO32− (Kb=1.8×10−4).Determine the pH of a solution that is 0.130 M
1. 8 answers
2. asked by trump
3. 6,084 views
The only way for artists to control movement in their works is to position important objects on the left-to-right path along
1. 11 answers
2. asked by pbody
3. 5,383 views
Calculate the pH that results when the following solutions are mixed1. 35 mL of 0.20 M formic acid 𝐻𝐶𝑂𝑂𝐻,
1. 3 answers
2. asked by I need your help thanks
3. 5,257 views
A uniform metal rod of length 80cm and mass 3.2kg is supported horizontally by two vertical springs balances C and D.Balance C
1. 6 answers
2. asked by james
3. 4,184 views
A 6volt battery of internal resistance 0.5ohm is connected to three resistors of value, 3ohm, 4ohm, and 5ohm. Calculate the
1. 12 answers
2. asked by istifanus
3. 3,764 views
Write chemical equations and corresponding equilibrium expressions for each of the two ionization steps of carbonic acidWrite
1. 3 answers
2. asked by trump
3. 3,186 views
Mieko bought 2 gallons of paint. She used 1/4 of the paint on her bedroom, 3 quarts on the hallway, and the rest of the paint in
1. 12 answers
2. asked by BustDemon
3. 3,172 views
Determine the [OH−] of a solution that is 0.240 M in HCO3− (Ka1=4.3×10−7).Determine the pH of this solution.
1. 4 answers
2. asked by trump
3. 3,030 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
1. 3 answers
2. asked by Anonymous
3. 2,959 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.
1. 2 answers
2. asked by Anonymous
3. 2,546 views
Which choice correctly describes a characteristic of an electromagnetic wave?a)An electromagnetic wave moves at the speed of
1. 3 answers
2. asked by :)
3. 2,349 views
Calculate the total surface area of the solid cone or vertical height 24cm and base diameter 14cm use the value 22/7 for pier
1. 4 answers
2. asked by Taofik
3. 2,298 views
Calculate the concentration of all species in a 0.145 M solution of H2CO3 (Ka1 is 4.3×10−7 and Ka2 is 5.6×10−11).Calculate
1. 1 answer
2. asked by trump
3. 2,282 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
1. 3 answers
2. asked by Anonymous
3. 2,216 views
Zip code contains 4 digits. How many zip-codes can be created with digits 0−9 if you can use each digit only once and zip code
1. 3 answers
2. asked by random
3. 2,155 views
Which best defines the “stab in the back” myth?It is the idea that Jews betrayed Germany by orchestrating its defeat in
1. 3 answers
2. asked by Student 5
3. 1,855 views
Which of the quadratic functions has the narrowest graph?a. y=-x^2 b. y=1/3x^2 c. y=3x^2 d. y=1/5x^2
1. 3 answers
2. asked by taylor
3. 1,737 views
A street light is at the top of a 20 foot tall pole. A 6 foot tall woman walks away from the pole with a speed of 7 ft/sec along
1. 1 answer
2. asked by Joe
3. 1,563 views
Find the number of the permutations with the letters of the word TRIANGLE.
1. 2 answers
2. asked by random
3. 1,505 views
Please help!1. Evaluate the function for x = 2 and x = 7, when f(x) = -4x + 61 2. Tell whether the sequence is arithmetic. If it
1. 3 answers
2. asked by joe mama
3. 1,144 views
How much does it cost to operate a 28-W porch light for 24 h if electric energy costs 8¢/ kWh .
1. 2 answers
2. asked by Mary
3. 1,139 views
there are four individual transformer feeder having connected loads of 250 kva, 300 kva, 350 kva, demand factor of these are
1. 2 answers
2. asked by V Roy
3. 1,104 views
Based on the titration results, what is the concentration of the sulfuric acid?Volume of 𝐾𝑂𝐻 36 mL Concentration of
1. 2 answers
2. asked by Anonymous
3. 1,090 views
10 teams enter a soccer tournament. In the first round teams paired in 5 pairs to play with each other.Assume that now in each
1. 0 answers
2. asked by it
3. 1,058 views
The first term of an AP is -5 and the fifteenth term is double the third term. Find the eleventh term of the progression.
1. 1 answer
2. asked by Jabba
3. 1,038 views
sound waves move through some liquid at a speed of 1500 m/s. If the wavelength is 3 m, what is the frequency of the wave?a)500
1. 3 answers
2. asked by :)
3. 962 views
To create animals that have characters of both species, some people have bred buffalo and cattle together. this is an example of
1. 2 answers
2. asked by Mightbe
3. 949 views
What volume of a 15.0% by mass NaOH solution, which has a density of 1.116 g/mL, should be used to make 4.95 L of an NaOH
1. 1 answer
2. asked by trump
3. 888 views
Homework: Explain what are translations, reflections, and rotations? Are there specific rules to follow?
1. 1 answer
2. asked by Starfire
3. 875 views
Pendulum clocks tend to use quite large masses.Why?
1. 2 answers
2. asked by Lee
3. 865 views
Name two ions which cause temporary hardness of water and two ions which cause permanent hardness.
1. 1 answer
2. asked by Happy
3. 836 views
Why isn't iron usually recommended in the construction of steam pipes and boilers?
1. 1 answer
2. asked by Anonymous
3. 812 views
A ladder of 8 m is leaning against a wall begins to slide. If its upper end slides down the wall at a rate of 0.25 m/sec, at
1. 14 answers
2. asked by anonymous
3. 774 views
In his book The Crack-Up, F. Scott Fitzgerald (author of The Great Gatsby) wrote the following description of a junk yard.Seen
1. 4 answers
2. asked by PLEASE HELP ASAP
3. 745 views
When water and kerosene are mixed in the container , which one forms the upper layer?give reasons
1. 4 answers
2. asked by Happy
3. 707 views
Which of the following are true about railroad expansion in the late 19th century? Choose all that apply.A. It led to new
1. 1 answer
2. asked by hjik
3. 687 views
Calculate the pH of the solution resulting from the addition of 75.0 mL of 0.15 M KOH to 35.0 mL of 0.20 M HCN (Ka (HCN) = 4.9
1. 0 answers
2. asked by pH! help!
3. 685 views
Calculate the ratio: [𝐶𝐻3𝐶𝑂𝑂𝐻] / [𝐶𝐻3𝐶𝑂𝑂𝑁𝑎]That will give a solution with pH of 5.00,
1. 1 answer
2. asked by PLEASE HELP :D
3. 684 views
How are the economies of South America Different.Please answer me :)
1. 1 answer
2. asked by Super Nova
3. 667 views
The cost, C, in dollars of producing n yearbooks is represented by the equationC =1000+5n Last year it cost $1375 for all the
1. 2 answers
2. asked by Emily
3. 617 views
Do now:A) Completa la oración con las letras que completan la palabra adecuada. 1. Quiero ir al ___________a a ver diferentes
1. 0 answers
2. asked by anonymous
3. 613 views
What are dilations and how can we apply them in real life? Give at least 2 examples.
1. 1 answer
2. asked by Wanda L.
3. 610 views
One hat and two shirts cost $21. Two hats and one shirt cost $18.Sam has exactly enough money to buy one hat and one shirt. How
1. 1 answer
2. asked by Joshy
3. 596 views
How did the Nile River impact ancient Nubia ?
1. 1 answer
2. asked by Anonymous
3. 582 views
Frank has 10 different shirts, 4 different pants, and 3 different pairs of shoes. How many different outfits can he create?
1. 1 answer
2. asked by Anonymous
3. 561 views
Amphetamine (C9H13N) is a weak base with a pKb of 4.2.Part A Calculate the pH of a solution containing an amphetamine
1. 1 answer
2. asked by trump
3. 556 views
35.0 mL of a 0.250 M solution of KOH is titrated with 0.150 M HCl. After 35.0 mL of the HCl has been added, the resultant
1. 0 answers
2. asked by Chemistry 101
3. 551 views
Find the Surface area and volume of a cone with a height(not slant height) of 12.5cm and a diameter of 7cm.How do I show work
1. 1 answer
2. asked by F. D. R.
3. 544 views
an electrician cuts a 17 ft piece of wire into two pieces one piece is 11 ft longer than the other how long are the pieces
1. 1 answer
2. asked by Kendra
3. 544 views
When should commas be used in writing? Comma rules?
1. 1 answer
2. asked by jackie
3. 530 views
If a man stands on the floor and weight 90kg and the area between his legs is 0.0368 m sq . What is the pressure exerted on the
1. 1 answer
2. asked by Toshni
3. 525 views
a) Banting is believed to reduce weight when done for a minimum of 10 days. A random sample of 5 ladies were weighed before and
1. 0 answers
2. asked by Gibbons
3. 484 views
Let g(t) be the Glucose concentration in blood stream of a person at time t.g(t) = 1/k(R - (R - k*go)e^(-kt/v)) Where go -
1. 2 answers
2. asked by Ashley
3. 474 views
Do you think the United States entered the war at the right time? Using specific information you learned about the war, explain
1. 1 answer
2. asked by Student 4
3. 448 views
A sample on analysis shows 50% CaO, what will be the % of calcium carbonate in it?
1. 1 answer
2. asked by Gbolliscent
3. 431 views
How do you find the slant height of a cone with a height of 12.5 cm and a diameter of 7cm?
1. 2 answers
2. asked by F. D. R.
3. 422 views
As in the diagram,let A,B,C,D be the centers of the 4 balls in the bottom layer,and A',B',C',D' be the center of the 4 balls in
1. 2 answers
2. asked by Kenny
3. 401 views
If a sample of hexane with benzene had an absorbance of 0.153 at256 nm in a cuvette with 1.000-cm path length, find the
1. 0 answers
2. asked by Chem help.
3. 400 views
A chromate 𝐶𝑟𝑂4 −2 solution has an absorbance of 1.534 when the cell length is 1.5 cm. If the molar absorptivity of
1. 0 answers
2. asked by Claire
3. 399 views
State the reason why a steel sphere resting on a horizontal surface is said to be in neutral equilibrium.
1. 1 answer
2. asked by William
3. 386 views
As in the diagram,let A,B,C,D be the centers of the 4 balls in the bottom layer,and A',B',C',D' be the center of the 4 balls in
1. 0 answers
2. asked by Kenny
3. 373 views
How would u write "$18 per week plus $2 for each visit to the event" in y=mx+b form?
1. 1 answer
2. asked by Anonymous
3. 367 views
The regression line from a plot of absorbance vs. concentration yields: 𝐴 = 2.31[𝐶] + 0.002. If the absorbance of an
1. 0 answers
2. asked by Edco
3. 362 views
2+2i, -2-2i, -2√3+2√3i forms an equilateral triangle
1. 1 answer
2. asked by Mohammed
3. 344 views
The equation for a normal calibration curve for the detection of iron(II) is determined experimentally to be 𝐴 = 12.93
1. 0 answers
2. asked by Shiro
3. 334 views
Principle of moments.
1. 1 answer
2. asked by William
3. 276 views
(c^2 − a^2 − b^2)^2 − 4a^2b^2.
1. 2 answers
2. asked by Bella
3. 266 views

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