# Posts by Anna

Total # Posts: 2,670

Iran is definitely the most. It holds 1/10 of the WORLD'S oil.

Math
13pi/12=________ degrees: Round to the nearest hundredth.

Math
Convert 35 degress to radian measure. Convert 250 degress to radian measure.

Spanish
Sra. are these better? La moraleja de la historia es no tratar de ser Dios. El primer rey trató de engañarle al otro rey en su laberinto. El rey estaba perdido y casi se murió. Se comprometió a castigar al primer rey en su propio laberinto. En su ...

Spanish
Sra. are these correct? Part I ¿Qué harías? Completa las oraciones siguientes en una manera lógica utilizando la forma CONDICIONAL. 1. Si fuera presidente… Si fuera preseident lo haría la gente sea agradable. 2. Si ganara la loterí...

Spanish
Sra. Are these correct? Part I ¿Pretérito o imperfecto del subjuntivo? Llene los espacios en blanco con la forma del PRETÉRITO o el IMPERFECTO DEL SUBJUNTIVO como apropiado. 1. Les pedí a ellos que __________ la factura inmediatamente. pagaran 2. ...

Chemistry
How much heat energy, in kilojoules, is required to convert 48.0g of ice at −18.0 ∘C to water at 25.0 ∘C ? Please show all steps. i don't know where to start

math
nvm

math
so wait what grade are you in because you could help me with something

math
okey you did that right because you already did rounded

math
wait

math
(2.00) (10.00)(2.00)

Math
I need all the answers too

Chemistry
For which of these elements would the first ionization energy of the atom be higher than that of the diatomic molecule? helium oxygen carbon lithium Please explain why and thanks

Physics
Thank you

Physics
A rectangular trough, 2.0 m long, 0.50 m wide, and 0.50 m deep, is completely full of water. One end of the trough has a small drain plug right at the bottom edge. When you pull the plug, at what speed does water emerge from the hole? (in m/s) Hint: V = sqrt (2 g H I just don...

Chemistry
@DrBob222 Thanks! It really did help me understand it better

Chemistry
HW Help!!!! An object at 4500 K emits the blackbody spectrum shown here. This object emits the most light in the __?__ part of the visible spectrum.

Chemistry
The color of light emitted by a hot solid object depends on?

Chemistry
Given that many laboratory gases are sold in steel cylinders with a volume of 43.8 L, What mass (in grams) of argon is inside a cylinder whose pressure is 17810kPa at 24∘C? I've attempted this problem but I'm not getting the correct answer. Please explain if you ...

Chemistry
P= [14.5g*(0.0821L*atm/mol*K)*305K]/0.13L P=2792.98 P=2792.98*760mmHg = 2122664.8 g/mol*mmHg

Chemistry
If 14.5g of CO2 gas has a volume of 0.13L at 305K , what is its pressure in millimeters of mercury? I've plugged these values into the equation P=nRT/V but I am having troubles with canceling labels and getting the correct answer. Please explain as much as possible to me!

Spanish
Thank you so much! I hope you have a wonderful holiday.

Spanish
Thank you Sra. I tried these three again. You were correct they are too complicated. I sometimes feel I need to add more information than necessary. 14. ¿Qué Hizo el jefe de correos al leer la carta? Al leer la carta el jefe de correos recogido dinero para Lecho...

Spanish
Hola Sra. This one is a bit long. I hope they are correct. Part I Los pronombres relativos. Complete las oraciones siguientes en una manera lógica. Juan es el hombre a quien… Juan es el hombre a quien necesito dar el dinero. 1. Es un problema que… Es un ...

MATH!!
Joe and Susan invested \$1500 at Bank of America in 2000, at 4% compounded quarterly. In the year 2005 they moved to another city and took the total money from their investment added \$500 and invested in at Bank Bravo, at 5% compounded quarterly. a) What is the value of this ...

MATH!
Thank you very much!

MATH!
Barbara invested \$12,300 at the Midtown Credit Union at 6% compounded monthly for 7 years. What is the effective rate of this investment?

Social Studies
Which of the following is the largest ethnic group in china A.Han B.tibetan C. Uighurs D. Hui Which of the following is the staple crop of the north China plain A. Barley B. Rice C. Soybeans D. Wheat Crops grow well on the north China plain because the Huang river ___ A. Forms...

Chemistry
Use bond energy values to estimate delta H fro the following reaction in the gas phase: C2H4 + Br2 -> CH2BrCH2Br I am in dire need of help! Thank you

Spanish
Hola Sra. Are these correct? La tercera persona plural de pretérito. Cambie las formas entre comillas al pretérito según el ejemplo. Ejemplo: No “han podido” sacar dinero de la máquina. No pudieron sacar dinero de la máquina. Esos ...

Math
The ratio of guys to girls in the classroom is 8:1. There are 45 people in the classroom. How many of them are guys?

Physics
K=.693/ (10000 years -> seconds) starting amount * K= atoms decayed

history
what proposal sought to unite the American colonies against the french

Math Elementary Linear Algebra
determine whether or not the given set forms a basis for the indicated subspace: #1 {1,1,0), (1,1,1)} for the subspace of R^3 of all (x,y,z) such that y= x+z #2 {[1,2,-1,3), (0,0,0,0)} for the subspace of R^4 of all vectors of the form (a,b, a-b,a+b) and #3 {(2,0,2), (1,1,1)} ...

math
when a traffic light turns green, a car accelerates at a constant rate, the decelerates in the same manner to stop at the next traffic light. The speed of the car, s, is given by the equation, s=-10 /t-8/ + 80 where t is time. Find the time , t, it takes for the car to reach ...

Math
show that the set of all m-vectors whose first components is 0 (of R^m)

Chemistry
What is the molarity of a solution prepared by dissolving 820. g of sodium phosphate, Na3PO4, in water and diluting to 2.89 liters? (atomic masses: Na = 22.99, P = 30.97, O = 16.00)

Spanish
Sra. do these look correct? ¿Cuánto tiempo hace que…? Conteste las preguntas utilizando frases completas en español. 1) ¿Cuánto tiempo hace que has escrito una carta a mano? ¿A quién la escribiste y por qué? Hace ...

geomerty
how to find the distance between each pair of points (0,3)and (3,-5)

Biology*STUCK*
1.b 2.c 3.c

Chemistry
Consider the evaporation of water at 298 K and 1 atm pressure: H20 (l) <---> H20 (g) Given that ΔGOrxn= 8.6kJ/mol, what is the equillibrium vapor pressure of water at 298 K?

Chemistry
Using the following data 1. CU3+ + 2e- ---> Cu+ E1= 1.28V 2. CU2+ + e- ---> Cu+ E2= 0.15V 3. Cu2+ + 2e- ----> Cu(s) E3= 0.34V 3. Cu+ + e- ----> Cu (s) E4= 0.52V calculate the standard reduction potential for the reaction of Cu(III) to Cu(II). Is it .783 V?

Chemistry
Please disregard this question. It's been answered: BaCl2 + Na2S \-> BaS + 2 NaCl

Chemistry
A salt may be prepared by the reaction of one salt with another salt, particularly if one of the products is insoluble. In which one of the following reactions is this demonstrated? (NH4)2CO3 + K2SO4 \->(NH4)2SO4 + K2CO3 CuCl2 + 2 NH4NO3 \-> Cu(NO3)2 + 2 NH4Cl Sr(NO3)2...

Chemistry
Thank you Dr. Bob, I appreciate your help. I will look at the link. :D

Chemistry
A salt may be prepared by the reaction of one salt with another salt, particularly if one of the products is insoluble. In which one of the following reactions is this demonstrated? (NH4)2CO3 + K2SO4 \->(NH4)2SO4 + K2CO3 CuCl2 + 2 NH4NO3 \-> Cu(NO3)2 + 2 NH4Cl Sr(NO3)2...

Chemistry
A salt may be prepared by the reaction of one salt with another salt, particularly if one of the products is insoluble. In which one of the following reactions is this demonstrated? (NH4)2CO3 + K2SO4 \(->NH4)2SO4 + K2CO3 CuCl2 + 2 NH4NO3 \->Cu(NO3)2 + 2 NH4Cl Sr(NO3)2 + ...

Spanish
Sra. do my answers look correct? Querida Abby… Complete el párrafo abajo por escoger una palabra lógica de la lista siguiente para llenar los espacios en blanco. Querida Abby, Tengo un problema. No sé qué debo ___(1)____. Recientemente, mi ...

math
Thanks Reiny. I didn't understand that. Whoever made this question, hope you got it correct.

chemistry
Rank the following elements by electron affinity, from most positive to most negative EA value: tellurium, bismuth, neon, sodium, iodine i tried Te, Bi, Na, I, Ne and it was incorrect.

Science
882.9

chemistry
K(s)+NH3(g)→ ?

Math
No, because I took the quiz and it said the answer was C after I took it and I thought it was D, too but it wasn't

Math
Answers D A B A C 100% Guaranteed on your connexus quickcheck :) :) :)

Math
I'll report back to you guys when I have the answers to help :)

Math
2/7

trigo
a bicycle has a front wheel with a diameter of 24cm and a back wheel with a diameter of 60cm. through what angle does the front wheel turn if the back wheel turns through 12 radians

Social Studies
Shawn Mendes is life <3 thank you for the answers too btw really helped me too !!

chemistry
Cloves contain two principal essential oils, caryophyllene and eugenol. A student carrying out a steam distillation using cloves obtained a mixture of these two oils in the distillate. Explain how the student could separate and isolate the two essential oils using liquid-...

chemistry
Limone (MW 136g/mol) is a pleasant smelling liquid found in lemon and orange peels. The boiling point of limonene is 175 ˚C, but it co-distills with water at 97.5 ˚C. If the vapour pressure of water at 97.5˚C is 690 mmHg, what percent (by mass) of the steam-...

chemistry
Aniline (MW93 g/mol) co-distills with water 98.2 C. The vapor pressure of water at 98.2 C is 717 mmHg. You need to isolate 10 g of aniline. What is the minimum volume of water required to isolate 10 g of aniline in a steam distillation at 760 mmHg?

Chemistry
A meteorological balloon contains 237. L of helium at 33. °C and 0.832 atm. If the volume of the balloon can vary according to external conditions, what volume would it occupy at an altitude at which the temperature is -57. °C and the pressure is 0.094 atm? (2 ...

Chemistry
Suppose 55.3 L of a gas is at a temperature of -73. °C. If its temperature is increased to 411. °C, what will its volume be then?

Spanish
Thank you so much Sra. My assignments aren't due until the following week. Never feel like you have to answer right away.

Spanish
Hola Sra ¡Feliz Halloween! Do my answers look right? Part I ¿Ingestión o intoxicación? Traduzca la conversación siguiente al español utilizando los tiempos compuestos como apropriado. Es importante usar el tono formal (Ud.) ya que una ...

math
barmodel

Spanish
Sra. are these three correct? I have a short assignment this week. Thank you! Conteste las preguntas utilizando el pluscuamperfecto de indicativo según el modelo. Use el mismo verbo que se usa en la pregunta. Modelo: ¿Por qué no nos ha dicho la verdad ella...

L/A
Hi we're doing the same assessment if you ever got the answers could you give them to me?

Chemistry
How would you prepare 165 mL of a 0.976 M NaOH solution, starting with a 6.36 M stock solution? Volume of solution needed? Volume of water needed?

Algebra
I don't understand how to find the equation to solve this. A family drove two cars to a reunion. The first car traveled at 50 mph. The second car left 1 hour later and traveled at 65 mph. How long will it take for the second car to catch up to the first car?

algebra
has inherited \$15,000 that she wants to invest in two separate accounts, one paying 4% and one paying 3% annual interest. If the total interest earned for a year is \$550, how much should she invest at each rate?

science
what force is applied by Andre if he does 250 J of work as he pushes a box 19 M along the ground ?

Spanish
I'm so sorry. I did type #9 wrong. It is... Xavier, “quiero que le preguntes” al dependiente si hay un restaurante cerca. Xavier, __________ al dependiente si hay un restaurante cerca. My answer is: pregúntale Thank you so much for your help! It seems with...

Spanish
Sra. this week I had a review. Do my answers look correct? Part I Indique si las palabras en pares son sinónimos, antónimos, o no son relacionadas. 1. A ancho y apretado - antónimos B corto y flojo - no son relacionadas C vestirse y quitarse - antó...

Algebra
I still don't get it, where do I simplify at? Fractions aren't my strong point.

Algebra
Solve for x in each of the following: A: 2/3 = x/18 B: 3/x = 3x/x^2 I think I have the first one. I am clueless on the second one! HELP!

Chemistry
A compound containing boron and hydrogen has been synthesized. You perform two experiments to determine the molecular formula of the compound. A 0.492 g sample of the compound is burned in pure oxygen to produce B2O3 and 0.540 g of water. In the second experiment, when a 63.1 ...

Math
4.355

physics
A man threw a ball horizontally out of an elevator that was traveling upward at a rate of 5.50m/s. If the ball was thrown at a velocity of 10.5m/s when the elevator was 15.3m above the floor of the atrium. How far from the base of the elevator did it land?

math
Determine whether the fractions in each of the following pairs are equal: a: a^2/b and a^2b/b^2 b: 377/400 and 378/401 c: 0/10 and 0/-10 d: a/b and a+1/b+1, where "a" is not equal to "b" or a =/= b

Spanish
Sra. do these look correct? Part I Entonces, complete el diálogo telefónico en una manera lógica utilizando oraciones completas en español. 1. Dígame. Hola. ¿Puedo hablar con el señor Costa? 2. ¿De parte de quién? ...

B sometime
B sometime

Math
64/8 64 divided by 8 = 8 8x8=64 Tip: With ratios always divide by the denominater by the numerator to get your answer

math
6 12÷2=6 6×2=12

Engineering
what heading must a pilot fly to compensate for a 125km/h west wind to have a ground track that is due south? The airecraft cruise speed is 600 km/h. What is the actual ground speed?

chemistry
How many moles of molecules are in 198 g of hydrogen nitrate (HNO3)? Answer in units of mol

Pre-Calc
1.) Suppose that y varies directly as x. If y is 5 when x is 30, the constant of variation is 150. True Or False 2.) If w varies directly as z and w = 9 when z = -6, find w when z = 3. 3.) If y varies directly as x and y = 2 when x = 4, find x when y = 4.

Spanish
Thank you for your corrections Sra. I am not sure why I was so confused about the second part. I thought I was using indicative imperfect but I was so wrong. At least the subject half was ok. As for gustar I should have known better. I always get tricked with that verb. Thank ...

Spanish
Sra. are my answers correct? Thank you so much for your time. Part I El condicional. Llene el espacio con la forma condicional del infinitivo dado. ¡Cuidado! Los acentos son importantes. 1. Mi esposo y yo _______ contigo, pero no nos sentimos bien. (IR) iríamos 2...

Math
if jerry bought 6 shoes for 85 dollars, how much would fred have to pay for 17 pairs at the same rate?

math/ unit rates
5/32

physics
A geosynchronous satellite is one that appears to be fixed in the sky, a condition useful for telecommunications. If such a satellite orbits the earth at an altitude of 33000 km above the earth's surface, what is its centripetal acceleration? The radius of the Earth is ...

physics
A basketball is thrown at 45° to the horizontal. The hoop is located 4.4 m away horizontally at a height of 1.1 m above the point of release. What is the required initial speed?

Spanish
Sra. would you look over my answers please? Part I. El subjuntivo con expresiones hipotéticas: Complete las frases siguientes utilizando EL SUBJUNTIVO. Ejemplo: No completaré la tarea hasta que... estudie los verbos. My answers are after the ... on each 1. Ser&...