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Posts by shay

Total # Posts: 418

Social Psychology
Can someone give me examples of some Alpha Strategies and Omega Strategies? Note:I just need to get some ideas. My textbook have 2 Tables by (Knowles & Linn, 2004) which did NOT help much.

chemistry
which will make you wealthy one mole of pennies (6.02e23 pennies) or one mole of Au atoms(6.02e23 atoms)?

chemistry
How much in $ is one MOLE of pennies?

chemistry
What two conditions necessary for molecules to be polar? Her's my answer pls check. First, at least one covalent bond in the molecule has to be a polar covalent bond. For a bond to be polar, there must be a difference in the electronegativities of the two atoms that are ...

chemistry
What is the complete ionic equation for the double displacement reaction: CuNO3(aq) + K2S(aq)= what is the chemical name and formula of this chemical reaction? plsss. need help

Chemistry
Would you expect a chemical change to be always accompanied by a physical change? Explain?

Chemistry
which sign of chemical reaction is not detectable by sight?

chemistry
when two solutions are mixed and a new color is observed is this color change an indication that a chemical reaction has occurred? Explain why?

chemistry
Reacting Mg with acid solution to form Mg salt and Hydrogen gas. What are the: 1.general reaction type 2. Chemical equation include phase 3. complete ionic equation include phase 4. chemical equation for the reaction between magnesium with water

chemistry
Hi DrBob222 i mean the evidence of the reaction pls

chemistry
decomposition of water to form elemental Hydrogen and Oxygen gas. What will be the balanced chemical equation, type of reaction and the driving force of the reaction?

chemistry
what is the gas formed when baking soda is added to vinegar? complete the reaction: NaHCO3(s) + CH3COOH(aq)

chemistry
Is there a gas formed if you heat a sugar? What will be its identity

chemistry
what is the lewis dot structure for BN

chemistry
Identify the following molecules as polar or nonpolar. 1. H2S 2. PBr3 3. SiCl4 4. SO2

chemistry
For each of the following bonds, indicate the positive end with \delta^{+} and the negative end with \delta^{-}. Write an arrow to show the dipole for each. 1. Si-Cl 2. Se-F 3. Br-F 4. N-H 5. N-P

chemistry
Write the formulas of the compounds formed Pb+4 with the following anions:OH-, NO3- , CO3(2-), HSO4- , PO4{3-} . Use the given order of anions.

chemistry
For each of the following bonds, indicate the positive end with \delta^{+} and the negative end with \delta^{-}. Write an arrow to show the dipole for each. 1. Si-Cl 2. Se-F 3. Br-F 4. N-H 5. N-P

chemistry
If the boron nitride molecule,BN, were to form, what would its structure look like? pls. need help

chemistry
thanks a lot DrBob222 you're such a big help

chemistry
is IBr a hydrogen bonding or dipole-dipole interactions or dispersion forces

chemistry
Write the formulas of the compound Al+3 formed by specified cations with the following anions:OH-, NO3-, CO3-2,HSO4-, PO4-3 . Use the given order of anions

chemistry
Write the formulas of the compound Pb+4 formed by specified cations with the following anions:OH-, NO3-, CO3-2,HSO4-, PO4-3 . Use the given order of anions

chemistry
Write the formulas of the compound Al3+ formed by specified cations with the following anions:OH-, NO3-, CO3-2,HSO4-, PO4-3 . Use the given order of anions

chemistry
Write the formulas of the compound NH4+ formed by specified cations with the following anions:OH-, NO3-, CO3-2,HSO4-, PO4-3 . Use the given order of anions

chemistry
The half-life for the radioactive decay of calcium-47 is 4.5 days.If a sample has an activity of 4.00uCi after 13.5 days, what was the initial activity of the sample?

chemistry
Technetium-99m is an ideal radioisotope for scanning organs because it has a half-life of 6.0 {\rm hr} and is a pure gamma emitter. Suppose that 280{\rm mg} were prepared in the technetium generator this morning. How many milligrams would remain after the following intervals?

chemistry
Iodine-131, a beta emitter, has a half-life of 8 days.How many grams of a 10.0g sample of iodine-131 would remain after 56.0 days?

chemistry
When californium-249 is bombarded by oxygen-18, a new isotope and four neutrons are produced. Express your answer as a nuclear equation.

chemistry
Radon-222 undergoes alpha decay.what is the nuclear equation

chemistry
Technetium-99m is an ideal radioisotope for scanning organs because it has a half-life of 6.0 {\rm hr} and is a pure gamma emitter. Suppose that 280{\rm mg} were prepared in the technetium generator this morning. How many milligrams would remain after the following intervals?

chemistry
Technetium-99m is an ideal radioisotope for scanning organs because it has a half-life of 6.0 {\rm hr} and is a pure gamma emitter. Suppose that 280{\rm mg} were prepared in the technetium generator this morning. How many milligrams would remain after the following intervals?

math
As an entrepreneur, there are going to be many decisions that you need to make, such as the price to charge your customers for your goods and services. You have just graduated from college and recently opened a specialty pizza restaurant. Based on surveys conducted in your ...

chemistry
thanks a lot big help

chemistry
The safe level of radon gas at home is 4X10e-12 Ci/L or less. If you measure radon levels in the basement what is the maximum number of Ci that could be safe to find in a basement with dimensions of 12 ft x 15 ft x 6 ft?

chemistry
It takes 1 hour and 17 min. for a 1.000g sample of a certain isotope to decay to 0.121g. What is the half-life of this isotope? plssss helpp

chemistry
if you are exposed to all sources of radiation from natural sources and human activities (worldwide average). How many years would it take for you to absorb a fatal dose of radiation plss help

Science chemistry
It takes 1 hour and 17 min. for a 1.000gsample of a certain isotope to decay to 0.121g. What is the half-life of this isotope? plssss helpp

chemistry, i need help like a.s.a.p!!!!
Volume= 3.1 x 4.6 x 1.9 = 27.094cm3 Density=mass/volume = 19.07g / 27.094 cm3 Density= 0.7038g/cm3 or 0.704g/cm3

Chemistry
Carbon-14 has a half-life of 5730 years In a plant fossil you find that the 14 C has decayed to 1/8 of the original amount how long ago was this plant

Physics
A person walks 13.9◦ north of east for 2.51 km. Another person walks due north, then due east to arrive at the same location. How far due north would this person walk? How far due east would this person walk?

Physics
A person walks 13.9◦ north of east for 2.51 km. Another person walks due north, then due east to arrive at the same location. How far due north would this person walk? How far due east would this person walk?

Geometry
idk

math
add or subtract the following polynomials as indicated (5.9x3 + 3.4x2 -7)-(2.9x3-9.6x2 +3)

math
tracy had coffee once a day, and the special blend she bought at Donna's Coffee Stop cost about $3.00 a cup. Max bought coffee at Donna's coffee stop twice a day. He bought several different types of special blends that cost $.400 a cup on average 3. Tracy and Max ...

Math
Find the remainder when 13^18 + 19^12 is divided by 247.

Math
what does x reduce to???? 6x=15(mod 21) 2x=5(mod 7) x= ?(mod)7

Math
What are the 3 solutions? I'm stuck! 6x=15(mod 21) a=6,m=21,b=15 d=gcd(6,21)=3 solns. 6x=15(mod 21) 2x=5(mod 7) 21=6(3)+3 6+3(2)+0 0=6-6 6-(21-6(3))=3 6-21+18=3 6( )-21()=3 (21-6(3))(15)-6=3 ???????

Math
Find the units digit in 23^7777 by looking for mod 10.

Math
Consider the congruence 6x=15(mod 21). How many solutions does the congruence have? What are all the solutions?

math
Round all answers to the nearest hundredth square root of b^2-4ac;b=3,a=-1,c=-2?

math
Round all answers to the nearest hundredth -5a^2;a=-2?

world mythology
What are the implied moral values of the Greek/roman underworld?

world mythology
What are the cultural assumptions of the greek/roman underworld?

world mythology
Identify the main characteristics of the Greek/roman underworld

math116
in some year election for the president there were 86.7 million voters,whereas in the next year there were 126.2 million voters. find the percent change in the number of voters.

english language writing skills
after a prolonged delay due to technical difficulties,the program resumed. identify the verb.

English/Literature
List the six people presented in this excerpt from Hiroshima. Besides surviving the explosion of the atomic bomb, what do they have in common?

math
Solve the equation: 6x^2+12x+5=0

Geometry
The ratio of the areas of two similar trapezoids is 1/9. What is th eratio of the lengths of their altitudes?

math, trig
Graph one period of the following function. Show all work . y=2sinx+2cosx

mth, trig
Thanks but how did you find that? My numbers came out completely different -_-

mth, trig
Given cos a=-7/25 in quadrant II , and sin b=-12/13, in quadrant IV , find cos(a+b) and sin2a

Math
Thank you soooo much!

Math
Damien sets up a bucket to catch rain drops the bucket can hold 1 gallon. If each raindrop is mae of about 1/90 fluid ounce of water,how many raindrops will the bucket be able to hold?

College Chemistry
3.1

math
There are 12 inches in a foot and 36 inches in a yard, so if your are trying to find how many in a yard: 36 * 12 =

geometry
point A is located at (1,5) and point B is located at (3,2). What is the length of line segment AB in simplest radical form

CHEMISTRY
What happens to the NH4+ and Cl] ions when they enter the water? Does this process release or require energy?

CHEMISTRY
What happens to the NH4+ and Cl] ions when they enter the water

math
If anyone could answer this it would help me so much. (-36)(-5/-9) - (-20) = What do I do if there are two numbers with parentheses?

math
Thank you

math
What is -16 + -8 x -2 -(4-9)= ? I did it and got -72. I want to know if I'm right. I'm so confused with operations. Would you subtract the numbers and add, then multiply?

math
I knew it! Thanks

math
what is -3 x -3 x -3 x -3? My mom and I were having a debate and I think it's 81, but she thinks it -81. Which one of us is right?

3 grade math
They both intersect. Perpendicular lines intersect to form right angles, while intersecting lines just intersect. A right angle is 90 dergees. Any angle less than that is an acute angle. Any more is an obtuse angle and a straight line is 180›.

cell crossword puzzle 14 across
Golgi Complex

Math
It forms a triangle. I don't know what kind since I can't see the picture or angles.

physics
A tennis ball is thrown vertically upward with an initial velocity of +7.5 m/s. What will the ball’s velocity be when it returns to its starting point? The acceleration of gravity is 9.81 m/s 2 . Answer in units of m/s How long will the ball take to reach its starting ...

physics
A flowerpot falls from a window sill 25.3 m above the sidewalk. What is the velocity of the flowerpot when it strikes the ground? The acceleration of gravity is 9.81 m/s 2 . Answer in units of m/s How much time does a passerby on the sidewalk below have to move out...

math
Monday is 4 hours.

Math
1/4 times 5 = 1/4 * 5/1 = 5/4, The improper fraction. The mixed number is 1 1/4.

math
Assuming that the large shirts are the adult shirts, then the person has a 5 out of 12 chance of getting one.

Math; I really need help.
The standard form would be x + y = -5. But, I am not sure if that is the same for multiplication.

Math
There are an abundance of answers for this question. I can tell you of one such as 6,000 + 7,000 + 4,491 because this is one of the easiest.

Science 7R
Unless that 79 is a 79.5 or higher than it is not good for an 80.

geometry
You forgot to give us the lenght of the side of the line that connects from the middle of the pentagon to a side of the pentagon.

algebra
If w = weeks, I would use the equation: $20 + 6w = $150 - $4w. You can than solve this by finding w.

thunderstorms
Thanks!

Thunderstorms
Can you suffer from memory-loss if you get hit by a lightning bolt?

English
Using the lists of possible answers, use the letters assigned to the characters/people to identify who would be the speaker of each of the following paraphrases/quotations: 1)I think we'll all be destroyed by the A-Bomb,so why should I care about anything? 2)We were dared ...

English
Which of these is the properly punctuated sentence? a)Ted went to work and Bob went home. b)Ted went to work; and Bob went home. c)Ted went to work. And Bob went home d)Ted went to work, and Bob went home. Would the correct answer be D?

English
supposed? The answer is A.

English
I think the answer is B

English
Which of the following is correct? a) We were supposed to go to the game today, but it rained. b)We were suppose to go to the game today, but it rained.

English
Which of the following is correct? a)Who's toothbrush is floating in the toilet? b)Whose going to Dairy Queen with me? c)Whose jacket is that? d)b&c I believe the answer is C

English
which of the following is an example of a fragment? A) When Ted went to work, Bob went home. B) Although Ted went to work and Bob went home. C) Bob went to work although Ted went to work. D) Although Ted went to work, Bob went home. I Think the answer is B.

Aztecs
could someone tell me more about the Aztecs. (Yes, I have checked google and I have some information). -Thanks, w/apprecation Shay

African American History
What European nations were the first to engage in trade talks with Africans

algebra
30/x+20/x-20=1

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