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Questions (1,203)
In what major way did conflict in the Middle East affect the economy in the United States?
A. Conflict in the Middle East caused
3 answers
1,441 views
What is the minimum amount of 6.0 M H2SO4 necessary to produce 19.0 g of H2(g) according to the reaction?
2Al(s)+3H2SO4(aq)→Al2
2 answers
7,295 views
which of the following statements describes areas of research for uses of bacteria in biotechnology?
bacteria are being studied
2 answers
690 views
which of the following is a risk of biotechnology?
organisms can react to an added gene in unexpected ways. crops may become
4 answers
500 views
Which most accurately describes a problem faced by the Russian army on the eastern front during World War I?
A. Ottoman forces,
2 answers
653 views
An English teacher needs to pick 10 books to put on her reading list for the next school year, and she needs to plan the order
1 answer
1,235 views
In “The King’s Magic Drum,” what is the tortoise’s motivation for accusing the king’s wife of a crime?
He believes he
1 answer
1,409 views
What are the next terms in the sequence?
-6, 5, 16, 27, ...
8 answers
1,534 views
FIRST: Only answer if experienced in this field, no counter-questions, "I used to take this but I forgot," or random
3 answers
534 views
Determine vector, parametric, and if possible, symmetric equations of the line through D(-4, 3, 6) and parallel to the z-axis.
Ve
2 answers
1,497 views
The initial price of an engine was $450. To increase sales, the price was decreased by 12%. When it was realized that this new
3 answers
563 views
Determine vector, parametric, and if possible, symmetric equations of the line through A(-3, 5, -5) and B(9, 2, -1).
5 answers
901 views
Using Kirchhoff's laws for the loops ADCA and BCDB write an expression of the resistance of the PRT in terms of L1, L and the
0 answers
949 views
What did the expression “Square Deal” refer to as used by Theodore Roosevelt in regard to the federal government?
1 answer
1,062 views
What are the two missing numbers in the sequence 4,3,3,2,3,3,7,7,2,_,_?
0 answers
558 views
what is the solution to -√90 to the nearest integer?
A: 3 B: -5 C: 7 D: -9 i did the rest of the problems (5) but idk how to do
1 answer
435 views
This is a discussion on Connections Academy Algebra Readiness; Lesson 10 Unit 3.
Student A believes the square root of 2 over 8
3 answers
1,241 views
Given that S=7a+b+7c and also S=6a+8b+6c, where 51<S<149 and S is an integer, find the sum a+b+c.
1 answer
686 views
Given that a+1/(b+(2/c))=17/5, where a is the integer part of the mixed number, and c is the numerator of the fraction part of
3 answers
1,991 views
Given that a+b=c, a+c=d and b=c+d, where d is a positive integer, what is the greatest value of a?
2 answers
805 views
2: Y^5 x y^14=
A: 2y^19 B: y^60 C: y^19 D: 2y^60 3: w^12 ÷ w^18 A: w^30 B: w^-30 C: w^6 D: w^-6 4: Using the numbers 3, 2, and
1 answer
660 views
There were 1090 people on a beach. If 10% of the people left. How many remained?
thank you.
5 answers
2,689 views
For some surfaces, the normal lines at any point pass through the same geometric object. What is the common geometric object for
1 answer
599 views
1) what significant effect did The Treaty of Paris, signed after the French and Indian War, have on the French (1 point)
a)
25 answers
6,648 views
1. Determine the scalar equation of the plane with vector equation Vector r= (3,-1,4) +s(2,-1,5) + t(-3,2,-2).
2. Determine the
2 answers
2,498 views
the scalar equation of the line through (-1,5) if (4,-1) is a normal vector to the line.
0 answers
378 views
Determine vector, parametric and, if possible, symmetric equations for the line through Q(2, -1, 3) and the mid-point of the
1 answer
501 views
Determine vector, parametric and, if possible, symmetric equations for the line through Q(2, -1, 3) and the mid-point of the
1 answer
2,093 views
SHOW THAT LINES (x-5)/-2 = (y+3)/4 = (z-1)/6 = t AND (x+2)/4 = (y-1)/-8 = (z+6)/-12 = t ARE PARALLEL.
1 answer
350 views
which of these describes a chemical reaction?
a. Atoms are created by elements b. Atoms combine to form elements c. Atoms of two
1 answer
997 views
If ∣Vector x∣=8, ∣Vector y∣=13 and ∣Vector x + Vector y∣=15, determine
∣Vector x - Vector y∣. You may want to
1 answer
466 views
If you have 500 ml of .15M Formic Acid, what is the pH of this solution? What is the
pKa? How many grams of Sodium Formate would
1 answer
1,235 views
What policies led to the Boxer Rebellion?
3 answers
1,828 views
Check my answer?
What is the order of the numbers from least to greatest? A= 6.2x10^5, B= 1.1x10^-3, C= 4.3x10^-3, D= 5.2x10^-5 I
1 answer
1,462 views
Which of the following text examples supports the conclusion that Father will never stop building things? Choose all that apply.
8 answers
3,690 views
suppose u = (1, 2, 3, 4, 5, 6, 7, 8) is the universal set and p = (1, 2, 3, 4). what is p?
a.) (5, 6, 7, 8)*** b.) (1, 2, 3, 4,
5 answers
4,867 views
While attending a film festival you decide that there are 12 movies that you are interested in seeing. However, you only have
1 answer
1,575 views
The ___ of a function consists of the set of all output values.
4 answers
1,006 views
1. What are the minimum, first quartile, median, third quartile, and maximum of the data set?
18, 20, 11, 10, 8, 6, 12, 4 A:
15 answers
7,184 views
CH3OH(aq) + OH-(aq) ⇌ CH3O-(aq) + H2O(l)
If methanol has pKa = 18.3, what is pKb for its conjugate base?
2 answers
806 views
Measures of Central Tendency and Dispersion Practice
2. Tell which measure of central tendency best describes the data. Time
15 answers
7,263 views
Sketch the region bounded by the x-axis, the curve y = x2 + x + 1 and the lines x = 2 and x = 5. Write down a definite integral
3 answers
1,344 views
Describe the microbial loop and role of viruses simplified.
I just dont understand it if anyone could please help or suggest a
2 answers
656 views
Outline how the Bohr Theory for the hydrogen atom (as represented by the
formula in part (b) above) can be modified to explain
1 answer
498 views
9. Find the solutions to the system.
y=x^2+5x+6 y=4x+12 A. (2,20) and (-3,0) B. (2,20) and (-3,-18) C. (-2,-20) and (-3,-18) D.
4 answers
2,025 views
The square root of 76 is between what two numbers?
1 answer
567 views
One liter of a buffer composed of 1.2 M HNO2 and 0.8 M NaNO2 is mixed with 400 mL of 0.5 M NaOH. What is the new pH? Assume the
2 answers
1,830 views
Why did the United States become involved in Mexico's civil war? Select all that apply.
1)Relations had weakened between the
5 answers
3,436 views
compare and contrast the views of the federalist party and the democratic republican party on at least three different
7 answers
2,290 views
a block of stone has a density of 2.75 g/cm3. the block has a mass of 3.30 kg. it measures 6.00 cm wide by 8.00 cm high by L cm
3 answers
719 views
My answers have the star
1. The nervous system is the body’s ______________ network. (1 point) communication*** organization
21 answers
12,964 views
Alpha rays are really
a. electrons b. helium nuclei c. electromagnetic waves I think the answer is B because the alpha particle
1 answer
802 views
A $8700 investment grows to $11100 in 13 years. If the investment has interest compounded quarterly, determine the interest
2 answers
554 views
A person invested $17100 at 7.3% interest compounded quarterly. Estimate the number of years for the investment to double.
A) 23
2 answers
409 views
Determine the interest earned of a 23-year investment with an interest rate of 2.8% compounded daily, if the future value is
1 answer
343 views
determine the term of $2100 with an interest rate of 21.77% a compounded semi-annually if the future value is $5900
7 years 5
4 answers
570 views
from a standard deck of cards, 3 cards are selected. what is the probability that 2 are diamond and 1 are clubs?
i got
2 answers
437 views
I would appreciate it if someone could check my answers immediately please!!!!!!! I don't need answers, I just need someone to
29 answers
12,155 views
Determine whether y varies directly with x. If so, find the constant of variation and write the equation.
X | Y ------ 1 | -2 3 |
3 answers
2,985 views
a kayaker paddles across a river at 4.2 m/s at an angle of 73 degrees northeast of the shoreline behind her. The river has a
1 answer
639 views
Certain private water utilities in South Carolina charge a variable rate for the drinking water they provide to residences. One
0 answers
923 views
Five number summary: 4.33, 5.05, 5.44. 5.79, 6.81
mean pH: 5.43 standard deviation: 0.54 Given the proportion of observations are
1 answer
667 views
A person is jumping straight up and down on a trampoline. The height of the center of mass of the person is measured every tenth
1 answer
1,290 views
All of the following are true of Meta Warrick Fuller's "Talking Skull" EXCEPT
3 answers
883 views
In order for Mateo to walk 1000 meters in his rectangular backyard, he must walk the length 25 times or the perimeter 10 times.
1 answer
487 views
In order for Mateo to walk 1000 meters in his rectangular backyard, he must walk the length 25 times or the perimeter 10 times.
1 answer
512 views
Find the missing value to the nearest hundredth.
tan (?) = 15
4 answers
2,681 views
Hi, I am having a lot of trouble with Normal Distribution. I do online school and this lesson didn't really explain how to
1 answer
1,037 views
10. If a solid piece of iron is heated and remains at 80°C until it is completely melted, you know that 80°C is (2 pts) *
a.
2 answers
626 views
1. A bullet has mass 5g. It is fired with a velocity of 50 ms-1 (g=9.8 ms-2) and strikes on a pendulum of mass 5 kg. Find out
2 answers
2,250 views
1. which of the following should be classified as a suspension?
A. soda** B. sand in water C. glass D. milk 2. Which of the
4 answers
913 views
I need help finding the value of x could someone explain?
1 answer
341 views
How much thermal energy is released when 500g of steam at 100 degrees C condenses into liquid water and then cools to 50 degrees
1 answer
1,332 views
Two small balls are attached to a rigid rod of mass 2.2 kg that is 6.0 m in length. The first ball has a mass of 2.25 kg and the
0 answers
604 views
Calculate the enthalpy of formation if 78.5 g of carbon dioxide in the following reaction:
C(s) + H2O(g) --> CO2(g) Use the
1 answer
696 views
Calculate the enthalpy of formation of carbon dioxide in the following reaction:
C(s) + O2(g) -> CO2(g) Use the following
1 answer
690 views
The enthalpy of combustion of butane C4H10 is described by the reaction:
C4H10(g) + (13/2) O2(g) -> 4CO2(g) + 5H2O(g) ΔH°rxn =
1 answer
5,877 views
Ben Guslists, vice-president of sales, has recommended adding a new product line. A market study and cost analysis show that the
1 answer
1,303 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
0 answers
409 views
When a person got onto an airplane, she brought with her a half-full 1.0000 L aluminum water bottle that was closed inside the
1 answer
694 views
Which pair of reactants will not react?
Au(s) with Hg^2+ (aq) Pt^2+ (aq) with Au(s) Ag(s) with Cu(s) Au(s) -> Au^3+(aq) + 3e-
1 answer
524 views
Using the following portion of the activity series for oxidation half-reactions, determine which element(s) can react with an
1 answer
2,208 views
what was major cause of problems with the sharecropping system
3 answers
3,552 views
For the data in the table does y vary directly with x? if it does write an equation for the dorect variation.
x;y 10,15 16,24
3 answers
1,318 views
Balance the following chemical reaction and determine the number of moles of HI produced when 2.33 moles of H2(g) are consumed
1 answer
1,968 views
Hello, I was hoping that I could get some help with calculating the mass needed to completely react with this question.
In the
1 answer
2,374 views
2sin5xcos4x-sinx=sin9x
Can u do this without triple angle formula and how
0 answers
486 views
use the definition of derivative to find d/dx(1/(3-x))
2 answers
411 views
equation of a straight line perpendicular to x-axis passing through the point (3,-1)
1 answer
567 views
if 7 times the 7th term of an A.P is equal to 11 times its eleventh term , what will be its 18th term?
2 answers
2,316 views
"...I long to hear that you have declared an independency- and by the way in the new Code of Laws which I suppose it will be
1 answer
878 views
For which pair of functions f(x) and g(x) below will the lim(x->infinity) f(x)g(x)≠0
a)f(x) = 10x + e^-x; g(x) = (1/5x) b)f(x)
1 answer
1,665 views
Consider these reactions where M represents a generic metal
1. 2M(s) +6HCl(aq) --> 2MCl3(aq)+3H2(g) (deltaH)= -725.0 kj 2.
1 answer
2,414 views
Given these reactions :
X(s) + 1/2O2(g) --> XO(s) (Delta)H= -707.7 kj XCO3(s) --> XO(s)+CO2(g) (Delta)H= +381.9kj What is
1 answer
6,515 views
Calculate the standard enthalpy change for the following reaction at 25 °C.
H2O+C(graphite)(s) --> H2(g) +CO(g)
1 answer
916 views
The following equation is the balanced combustion reaction for C6H6:
2C6H6(L) + 15O2(g) --> 12CO2(g)+6H2O(L)+6543 kj If 7.700 g
1 answer
1,016 views
If the heat of combustion for a specific compound is -1180.0 kJ/mol and its molar mass is 40.91 g/mol, how many grams of this
0 answers
528 views
A 2.50-g sample of powdered zinc is added to 100.0 mL of a 2.00-M aqueous solution of hydrobromic acid in a calorimeter. The
0 answers
777 views
When a 8.00-g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of 3.344 kJ·K–1, the
0 answers
718 views
A researcher studying the nutritional value of a new candy places a 4.10-gram sample of the candy inside a bomb calorimeter and
1 answer
618 views
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