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Chelsea

Questions (395)

What is the function of the lifeline of another man
1. 1 answer
2. 315 views
-7(4x-3)
1. 1 answer
2. 164 views
Write fifty-three hundredth in standard form.
1. 3 answers
2. 247 views
express 18 hours to two days as a ratio in its simplest form
1. 1 answer
2. 392 views
What number is taken from 19.3 will give 8.62?Also: What type of angle is 37 degrees?
1. 1 answer
2. 244 views
What number will be taken from 19.3 will give 8.62?Also; What type of angle is 37 degrees?
1. 4 answers
2. 373 views
What is the name of the famous mathematician that his/her name has the letters Q,X,B,E,C,W,D,A,J, and M
1. 1 answer
2. 273 views
A continental polar air mass moves into an area. Based on the characteristics of this type of air mass, which changes are most
1. 46 answers
2. 13,530 views
Let f(x) = 3x^2 – 2x + n and g(x) = mx^2 – nx + 2. The functions are combined to form the new functions h(x) = f(x) - g(x)
1. 3 answers
2. 606 views
A spherical balloon is being inflated. Given that the volume of a sphere in terms of its radius is v(r)=(4/3)(pi(r^3))and the
1. 3 answers
2. 1,652 views
Sides $\overline{AB}$ and $\overline{EF}$ of regular hexagon $ABCDEF$ are extended to meet at point $P$. What is the degree
1. 6 answers
2. 3,565 views
I have a crossword puzzle for the Social Studies 7 B Unit 2 Lesson 8These are the ones across 1. Wells tap into these
1. 10 answers
2. 1,795 views
Find the length of the curve. You may use your calculator.f(x)=x^(1/3)+x^(2/3) [0,2] I understand that the function needs to be
1. 3 answers
2. 562 views
You sit at the edge of a merry-go-round of radius 1.5 m. Your friends spin the ride faster and faster. When the period of
1. 5 answers
2. 3,299 views
Anthony Rizzo hits a baseball in such a way that it leaves his bat traveling at 40.4 m/s at an angle of 26 degrees above the
1. 4 answers
2. 1,727 views
A group of students plotted the number of hours they worked at a cake shop during the holidays and the number of cakes they
1. 2 answers
2. 777 views
You carry out tlc on silica gel of a mixture of compound A and B. Using a mobile phase of hexane 50% and acetone 50% the Rf
1. 2 answers
2. 522 views
The baseball team won 6 games more than they lost if the team won 18 games about what percent of the games did they lose
1. 2 answers
2. 556 views
I need help RIGHT NOW!!!!!!!!!!!!!!On the blueprints of Adam's office building, the length of his rectangular office space is 5
1. 2 answers
2. 843 views
102.0 MHz (typical frequency for FM radio broadcasting)Express your answer using four significant figures.
1. 3 answers
2. 1,549 views
John has 21 coloured pencils in a bag.6 of the pencils are red. John pulls out one pencil at random. What is the probability
1. 5 answers
2. 507 views
Find the volume of a cake of edge 4cm.
1. 3 answers
2. 735 views
Express four hundred and one thousand eight hundred and nine in figures.
1. 3 answers
2. 473 views
Add 3 hours 43 minutes and 5 hours 56 minutes.
1. 1 answer
2. 355 views
What is the value of 0.7 of 70?
1. 4 answers
2. 338 views
If one pack of lawn feed treats 12 square metres,how many packs are needed for a lawn 15m long and 4m wide?
1. 10 answers
2. 551 views
Sam has saved twice as much as Mick,but only one-fifth as much as Benji.If Mick has saved £23,how much has Benji saved?
1. 4 answers
2. 334 views
If £480 is shared in the ratio 1:2:3,what is the value of each share?
1. 3 answers
2. 590 views
How many 10cm x 10cm tiles are needed to tile an area 2m long and 1.2m wide?
1. 4 answers
2. 546 views
number of hours they worked at a cake shop during the holidays and the number of cakes they delivered in a week.Graph shows 0 to
1. 3 answers
2. 612 views
A photon has a frequency of 7.3 × 10–17 Hz. Planck’s constant is 6.63 × 10–34 J•s.The energy of the photon, to the
1. 5 answers
2. 4,307 views
If you had observed the fate of an ice cube at 25 degrees Celsius, what would you conclude about the spontaneity of the process
1. 3 answers
2. 1,076 views
1. Different settings. Consider how Kurtz and the pilgrims act differently in the following settings.• Belgium For this one I
1. 2 answers
2. 1,512 views
Which substances are not ionized in a aqueous solution?Hi, KBr, H2SO4, HNO2, AgCl, Ca(NO3)2
1. 2 answers
2. 671 views
A compound isolated from oil of mint has a characteristic cool, refreshing odour. It is frequently used in cough drops to ease
1. 2 answers
2. 595 views
A compound isolated from oil of mint has a characteristic cool, refreshing odour. It is frequently used in cough drops to ease
1. 1 answer
2. 495 views
1. The formation of water-insoluble chloride salts, especially silver(I) chloride, is useful for the analysis of compounds that
1. 2 answers
2. 611 views
1. Ammonia gas can be prepared by the following unbalanced equation:_____ CaO(s) + _____ NH4Cl (s) --> _____ NH3(g) + _____
1. 1 answer
2. 779 views
You purchased a 5.00 pound bag of sugar (sucrose, C12H22O11) at the grocery last week to bake cookies. Conversion: 1 pound = 1
1. 4 answers
2. 6,030 views
An unknown organic compound is 40.00% C, 6.67% H and 53.33% O by mass. The formula weight of the unknown is 90.0g/mole. Find the
1. 3 answers
2. 1,491 views
How many moles of ammonium ions and how many moles of sulfate ions are contaiuned in a 0.400 mile sample of (NH4)2SO4?Referring
1. 3 answers
2. 755 views
Part 1:Find the % by mass of each element in camphor (C10H20O). Step 1: Find the atomic mass of each element in the molecule.
1. 4 answers
2. 1,385 views
The results of a nationwide survey show that 57.40% of college students have violated rules of alcohol use. The margin of error
1. 3 answers
2. 523 views
What mass of PCl3 forms in the reaction of 70.6 g P4 with 268 g Cl2 ?P4 + 6Cl2 → 4PCl3
1. 3 answers
2. 1,656 views
Copper is changed to copper(II) ions by nitric acid according to the following equation:4HNO3 + Cu → Cu(NO3)2 + 2NO2 + 2H2O
1. 3 answers
2. 857 views
Three eights of the cast in a musical have to sing. What fraction of the cost does not have to sing?
1. 6 answers
2. 1,486 views
the math SAT scores for all students who applied to the school of engineering are normally distributed with M=629 and standard
1. 2 answers
2. 648 views
the average length of time required for students to complete a test in a an introductory statistics course is found to be 50
1. 1 answer
2. 1,271 views
A projectile is launched upward at 26m/s at 30 degrees from the horizontal. The whole path of the projectile takes place over
1. 1 answer
2. 512 views
A cat jumps on to a railing at a height of 1.20 m above the ground. He jumps at an angle of 70 degrees relative to the floor.
1. 1 answer
2. 418 views
A basketball player shot a ball. It left his hand at a height of 2.05 m above the court at an angle of 40 degrees relative to
1. 2 answers
2. 499 views
A ball leaves a kicker's foot with a velocity of 23.0 m/s and at an angle of 40 degrees up from the ground, how far did the ball
1. 2 answers
2. 500 views
The swim portion of a triathlon takes place in a river and is an out-and-back course. The river has a steady current that is
1. 2 answers
2. 634 views
If ac=5x-16 and gf = 2x-4 then af =
1. 1 answer
2. 348 views
Can any show me step by step on how to get this? I keep on getting different answers... Thank You!Use Simpson's rule with n=10
1. 1 answer
2. 568 views
I need to check my answers for the following:An Aston Martin V8 Vantage sports car has a maximum “lateral acceleration” of
1. 7 answers
2. 2,534 views
Find the length of the curve y^2=x^3 from the origin where the tangent line makes an angle of 45 degrees with the x-axis.
1. 2 answers
2. 739 views
The forests of the Pacific Northwest are just one of the many different ______________ in the United States where many people
1. 4 answers
2. 961 views
Find the error resulting from approximation by Trapezoidal Rule:integral (from 0 to 1) sqrt(1+ x^3) dx .... compute the results
1. 4 answers
2. 613 views
Find the Error resulted from approximation by Simpson's Rule:integral (from 0 to 1) sqrt( 1+x^3) dx ... compute the result for
1. 2 answers
2. 532 views
show that; given any three non-collinear points (x1,y1), (x2,y2), (x3,y3) there is a parabola p(x)=Ax^2+ Bx + c , containing the
1. 4 answers
2. 565 views
Could someone help me with these questions? Thanks!a) A cargo plane left Vancouver, British Columbia (time zone −8) at 3:00
1. 4 answers
2. 1,023 views
A sound of 7 kHz frequency is well within the normal hearing range of most people.True. False. << 2. Sound is a transverse
1. 5 answers
2. 841 views
1. Complete reflection is the special case of refraction at an angle of 180.True. False. 2. A resonant frequency is the same as
1. 3 answers
2. 695 views
1. A fluid can only be a liquid.True << False 2. One atmosphere is equal to 14.7 psi. True << False 3. In a fluid, pressure
1. 3 answers
2. 752 views
It's possible for a body to have both rotational and translational motion at the same time.True. << False. 2. The moment of
1. 3 answers
2. 819 views
A heat engine absorbs 126 kcal of heat and exhausts 77 kcal of heat in each cycle. Calculate the efficiency (as a percentage)
1. 5 answers
2. 537 views
An ideal gas heat engine operates in a Carnot Cycle between temperatures of 266 and 115°C. It absorbs 4250 cal per cycle at
1. 2 answers
2. 604 views
A heat engine absorbs 126 kcal of heat and exhausts 77 kcal of heat in each cycle. Calculate the efficiency (as a percentage)
1. 1 answer
2. 529 views
How much (in Celsius degrees) is the temperature of 1.3 kg of alcohol raised by adding 4.1 kcal of heat? The following piece of
1. 1 answer
2. 499 views
Kurt wants to sail his boat from a marina to an islnd 15 miles east of the marina. Along the course, there are several small
1. 2 answers
2. 1,319 views
The molecular geometry of POCl3 is tetrahedral. What hybridization does this indicate for the central P atom?Why is the answer
1. 4 answers
2. 2,437 views
60.0 mL of O2 was collected over water at a total pressure of 755 torr and a temp of 25C. The vapor pressure of water at 25C is
1. 2 answers
2. 582 views
What will be the concentration of the solution formed when 5.72mL of 8.50M HCl is diluted to 250mL?
1. 3 answers
2. 374 views
What is the concentration of a solution formed by dissolving 10.0g of ammonium acetate in enough water to form 150.0mL of
1. 3 answers
2. 419 views
H(f) Cl= 121.3 kjH(f) C= 716.7 H(f) CCl4= -95.7 calculate the average molar bond enthalpy of the carbon-chlorine bond in a CCl4
1. 4 answers
2. 12,435 views
A pulley of mass mp , radius R , and moment of inertia about its center of mass Ic , is attached to the edge of a table. An
1. 3 answers
2. 537 views
A firm is assigned the network part 128.171 It selects a 10-bit subnet part a) draw the bits for the first four octets of the IP
1. 1 answer
2. 547 views
If the wavelength if determined to be 0.018 nm, at what velocity is the electron traveling?(The mass of an electron is
1. 1 answer
2. 499 views
When a metal was exposed to light at a frequency of 4.26× 1015 s–1, electrons were emitted with a kinetic energy of 4.50×
1. 1 answer
2. 518 views
When a metal was exposed to light at a frequency of 4.26× 1015 s–1, electrons were emitted with a kinetic energy of 4.50×
1. 2 answers
2. 651 views
How long does it take (in minutes) for light to reach Earth from the Sun, a distance of 1.589 × 108 km?
1. 3 answers
2. 1,281 views
A small ball of mass m=0.60 kg hangs from a massless string of length l= 1.2 m. The ball travels in a vertical circle and its
1. 1 answer
2. 460 views
When a 5.00g sample of KBr is dissolved in water in a calorimeter that has a total heat capacity of 3.982 kJ-K, the temperature
1. 5 answers
2. 1,182 views
Use enthalpy of formation data to calculate the number of moles of CO2(g) produced per megajoule of heat released from the
1. 4 answers
2. 1,329 views
Given that:H2 (g) + F2 (g) ---> 2HF (g) H(rxn)= -546.6 kJ 2H2 (g) + O2 (g) ---> 2H2O (l) H (rxn)= -571.6 kJ calculate the value
1. 4 answers
2. 2,402 views
A certain gas has a density of 1.053 g/L at 25C and 752 mmHg. What is the molar mass of this gas?
1. 3 answers
2. 1,275 views
A solution of ethanol (C2H5OH) is prepared by dissolving 35.0 ml of ethanol in enough water to make 120.0 ml of solution. What
1. 4 answers
2. 1,239 views
What is the sodium concentration when a solution is formed by mixing 60.0 ml of 0.150 M sodium carbonate with 75.0 ml of 0.225 M
1. 1 answer
2. 477 views
If He(g) has an average kinetic energy of 4410 J/mol under certain conditions, what is the root mean square speed of O2(g)
1. 2 answers
2. 658 views
where R=8.314 J/(mol·K) and ℳ is molar mass in kilograms per mole. Note that a joule is the same as a kg·m2/s2.What is the
1. 2 answers
2. 1,362 views
Calculate the average translational kinetic energy (sometimes just called average kinetic energy)...for one mole of gas at 381
1. 2 answers
2. 1,233 views
A sample of Br2(g) takes 10.0 min to effuse through a membrane. How long would it take the same number of moles of Ar(g) to
1. 5 answers
2. 2,426 views
If a solution containing 52.044 g of mercury(II) chlorate is allowed to react completely with a solution containing 15.488 g of
1. 3 answers
2. 1,622 views
If a solution containing 52.044 g of mercury(II) chlorate is allowed to react completely with a solution containing 15.488 g of
1. 4 answers
2. 1,741 views
Enter the net ionic equation, including phases, for the reaction of AgNO3(aq) with BaO(aq).Is it... Ag+O2--->AgO?
1. 4 answers
2. 536 views
51.0 mL of a 1.20 M solution is diluted to a total volume of 248 mL. A 124-mL portion of that solution is diluted by adding 125
1. 2 answers
2. 647 views
What is the pressure of the gas in a manometer if the height in between is 71mm and the atmospheric pressure is 761mmHg?
1. 2 answers
2. 539 views
Table salt NaCl and sugar C12H22O11 are accidentally mixed. A 6.00 g sample is burned and 2.90 g of CO2 is produced. What was
1. 3 answers
2. 1,919 views
reaction of AgNO3 with BaO...Would it be Ag^+ + O^---> AgO (s)
1. 1 answer
2. 384 views

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