HI!

Calculate the heat released (in joules) from the condensation of 25.0 g of ethanol (C2H5OH). ∆Hvap = 204 cal/g; MP = -114.3¢ªC , BP = 78.5¢ªC (Draw a heating curve first!)

15 years ago

What is the sum? 72+(−35) (1 point) Responses 43 4 thirds 2910 29 tenths −2110 negative 21 tenths 4110

1 year ago

What is the algebraic expression for the following word phrase: the product of 4 and x?(1 point) Responses 4+x 4 plus x 4x 4 x 4−x 4 minus x 4x 4 over x

1 year ago

What is the simplified form of the expression 1196−−−√ ?(1 point) Responses 114 1 over 14 13 13 112 1 over 12 1169

1 year ago

Evaluate xy for x=310 and y = 45 .(1 point) Responses 750 7 over 50 715 7 over 15 38 3 eighths 1250

1 year ago

Simplify the expression (29)2 .(1 point) Responses 481 4 over 81 418 4 over 18 411 4 over 11 29

1 year ago

What is the simplified form of the expression 7[63÷(52−22)−1] ?(1 point) Responses 10 10 42 42 14 14 350

1 year ago

Solve the equation: 2z−5=11 (1 point) Responses z = 7 z = 7 z = 8 z = 8 z = 9 z = 9 z = 11

1 year ago

Solve the equation: −18=p2 (1 point) Responses p = 9 p = 9 p=−9 p is equal to negative 9 p = 36 p = 36 p=−36

1 year ago

Solve the equation: 5x−4=5(x−3)+11 (1 point) Responses x=5 x is equal to 5 x=3 x is equal to 3 infinitely many solutions infinitely many solutions no solution

1 year ago

Ella and Margaret were at a carnival. They each got a ticket for the carousel. Ella got a jumbo pretzel and Margaret got a snow cone. Ella had a certificate for $5 off the cost. Margaret paid the rest, which came to $12.75. Each carousel ticket costs $4 a...

1 year ago

Solve the equation: 4(2y−6)+3=11 (1 point) Responses y = 3 y = 3 y = −3 y = −3 y = 4 y = 4 y = 5

1 year ago

Suppose U = {1, 2, 3, 4, 5, 6, 7, 8} is the universal set and P = {1, 2, 3, 4}. What is P' ?(1 point) Responses {5, 6, 7, 8} {5, 6, 7, 8} {1, 2, 3, 4, 5, 6, 7, 8} {1, 2, 3, 4, 5, 6, 7, 8} {1, 2, 3, 4} {1, 2, 3, 4} cannot be determined

1 year ago

Solve the inequality: 5x−6 ≥ 9 (1 point) Responses x ≥ 5 x ≥ 5 x>−3 x is greater than negative 3 x≥ 3 x≥ 3 x≤ 5

1 year ago

Your goal is to save at least $360.00 over the next 6 weeks. How much money must you save each week in order to meet that goal? Write and solve an inequality.(1 point) Responses Inequality: 6+x≥360 ; solved: x≥354 Inequality: 6 plus x is greater than or e...

1 year ago

A student scored 78 and 92 on his first two quizzes. Use a compound inequality to find the possible values for a third quiz score that would give him a total average from 80 to 85.(1 point) Responses 78≤ x ≤92 78≤ x ≤92 75≤ x ≤85 75≤ x ≤85 70≤ x ≤85 70≤ x...

1 year ago

Of 212 consumers polled, some like only animated movies, some prefer just musicals, and some like both. If 74 people like only animated, and 86 like both, how many prefer only musicals? (1 point) Responses 52 52 65 65 74 74 85

1 year ago

hoose the correct solution graph for the inequality: −9x>54 (1 point) Responses

1 year ago

Choose the correct solution graph for the compound inequality: 7x+2≥30 or 4x−3≤−19 (1 point) Responses

1 year ago

Solve: |x−5|=3 (1 point) Responses x=8 or x=2 x=8 or x=2 x=8 or x=−2 x=8 or x=−2 x=8 x is equal to 8 x=2

1 year ago

Which accurately describes coral reefs? Select the three correct answers.(2 points) Responses Coral reefs often are located in nutrient-rich waters. Coral reefs often are located in nutrient-rich waters. Coral reefs often are located in nutrient-poor wate...

1 year ago

Which variables are involved in understanding Kepler's third law of motion?(1 point) Responses rotational velocity, distance to sun rotational velocity, distance to sun eccentricity of orbit, rotational velocity eccentricity of orbit, rotational velocity...

1 year ago

Which does the shift of the hydrogen absorption spectrum of a galaxy provide evidence for? Select the three correct answers.(2 points) Responses temperature of the galaxy temperature of the galaxy composition of the universe composition of the universe Th...

1 year ago

Which of the following layers is farthest from Earth's center?(1 point) Responses lithosphere lithosphere mesosphere mesosphere outer core outer core asthenosphere

1 year ago

How does galaxy composition typically relate to the age of the stars in the galaxy?(1 point) Responses Stars form from dust and gas, so galaxies with younger stars typically consist of higher proportions of dust and gas than other galaxies. Stars form fro...

1 year ago

Which of the following inner planets has the least eccentric orbit around the sun?(1 point) Responses Mercury Mercury Earth Earth Venus Venus Mars

1 year ago

Which is an example of physical weathering?(1 point) Responses microscopic organisms producing compounds that break down rock microscopic organisms producing compounds that break down rock a crack in rock growing larger as water freezes in it a crack in r...

1 year ago

How was the San Andreas Fault formed?(1 point) Responses the kinetic energy in a rift valley the kinetic energy in a rift valley the creation of land in a subduction zone the creation of land in a subduction zone consistent seismic activity consistent sei...

1 year ago

Which of these is the most widely accepted cause of plate movement?(1 point) Responses mantle convection mantle convection earthquakes earthquakes hotspots hotspots ocean waves

1 year ago

Which is a correct statement about Aristotle's and Ptolemy's models of the solar system?(1 point) Responses Aristotle's model involved epicycles moving within crystalline spheres. Aristotle's model involved epicycles moving within crystalline spheres. Pto...

1 year ago

Observing a planetoid orbiting far from the sun, astronomers notice that the object slows down in its orbit in a way they did not expect. Which is a reasonable conclusion?(1 point) Responses The planetoid is beginning to change its type of orbit. The plan...

1 year ago

At which continental feature would you expect to find metamorphic rock? Select the correct answer. (1 point) Responses mountain mountain volcano volcano lake bottom lake bottom valley

1 year ago

Which tools do astronomers use to determine the effects of collisions between galaxies? Select the two correct answers.(1 point) Responses space telescopes space telescopes print encyclopedia entries print encyclopedia entries solar system models solar sy...

1 year ago

Which of these, all of which include Earth, mostly likely contains the most dark matter?(1 point) Responses Solar system Solar system Milky Way Galaxy Milky Way Galaxy Local Group Local Group Virgo Supercluster

1 year ago

Which is an accurate statement about the different types of radiation emitted by the Sun? Select the two correct answers.(1 point) Responses Radiation with the longest wavelengths is most likely to cause wide variation in Total Solar Irradiance. Radiation...

1 year ago

Which shows the starts in the correct order, from smallest in size to largest?(1 point) Responses white dwarf, red supergiant, Sun white dwarf, red supergiant, Sun white dwarf, Sun, red supergiant white dwarf, Sun, red supergiant Sun, white dwarf, red sup...

1 year ago

The photosphere and chromosphere are typically described by which of the following characteristics?(1 point) Responses their extreme depths relative to other layers their extreme depths relative to other layers their plasma composition their plasma compos...

1 year ago

Which is a difference between visible light and radio waves?(1 point) Responses Radio waves can be seen by the human eye. Radio waves can be seen by the human eye. Radio waves have less energy than visible light. Radio waves have less energy than visible...

1 year ago

Which evidence can be used to classify a nebula? Select the two correct answers.(1 point) Responses shape shape interaction with light interaction with light distance from Earth distance from Earth location in the sky

1 year ago

Which is the order of the flow of energy from its production within the sun until it reaches Earth?(1 point) Responses nuclear fusion; radiation; convection currents nuclear fusion; radiation; convection currents radiation; convection currents; radiation;...

1 year ago

Which process forms all elements up to and including iron, except light elements such as hydrogen and helium?(1 point) Responses nuclear fusion within stars nuclear fusion within stars the formation of galaxies the formation of galaxies the formation of s...

1 year ago

Which piece of evidence supports the argument that land plants evolved due to presence of microbes?(1 point) Responses Both land plants and land animals have tube-shaped vascular tissue to transport materials throughout their bodies. Both land plants and...

1 year ago

Kepler’s first law of motion describes what feature of a planet’s orbit?(1 point) Responses the shape the shape the time required for each orbit the time required for each orbit the distance from the aphelion to the perihelion the distance from the apheli...

1 year ago

Which of the following provides evidence for rock formation by cooling? Select the correct answer.(1 point) Responses fossils in sedimentary rock fossils in sedimentary rock crystals in sedimentary rock crystals in sedimentary rock crystals in igneous roc...

1 year ago

Which features form near convergent oceanic plates? Select the two correct answers.(1 point) Responses mid-ocean ridge mid-ocean ridge volcanic arc volcanic arc island arc island arc trench

1 year ago

Which major characteristic defines the Cenozoic era?(1 point) Responses Dinosaurs became extinct. Dinosaurs became extinct. Mammals became dominant. Mammals became dominant. All mammals became extinct. All mammals became extinct. Dinosaurs became dominant...

1 year ago

Which three layers of the sun make up the sun's atmosphere?(1 point) Responses plasma, corona, convection zone plasma, corona, convection zone core, convection zone, chromosphere core, convection zone, chromosphere photosphere, chromosphere, corona photos...

1 year ago

What evidence do the positions of the peaks and dips in its spectrum provide about an object?(1 point) Responses motion motion expansion expansion elemental composition elemental composition temperature

1 year ago

Which describes the impact that severe solar weather that continues for a long period of time has on satellite communications?(1 point) Responses It will lengthen their time in space because they will need more time to collect data. It will lengthen their...

1 year ago

Which describes Aristotle's and Ptolemy's models of the solar system? Select the two correct answers.(1 point) Responses geocentric geocentric elliptical motions of planets elliptical motions of planets Sun at center Sun at center circular motions of plan...

1 year ago

Which is the last stage in the life cycle of an average star?(1 point) Responses white drawf white drawf neutron star neutron star planetary nebula planetary nebula super red giant super red giant

1 year ago

Which show the stars in the correct order, from lowest luminosity to highest luminosity?(1 point) Responses Sun, white dwarf, red supergiant Sun, white dwarf, red supergiant white dwarf, Sun, red supergiant white dwarf, Sun, red supergiant red supergiant,...

1 year ago

Which statement describes a planet as it moves along its orbit?(1 point) Responses It travels fastest and experiences a stronger gravitational pull when it is farthest from the sun. It travels fastest and experiences a stronger gravitational pull when it...

1 year ago

Identify the categories of proof used by Wegener as evidence of drifting continents. Select the two correct answers.(1 point) Responses evidence from fossils evidence from fossils evidence of glacial deposits evidence of glacial deposits evidence of the s...

1 year ago

Create an infographic poster using graphic design software or art supplies that displays at least one motivational mantra you can refer back to for encouragement along your fitness journey. Create space on your poster for where you will track your progres...

1 year ago

Jasmine is creating her personal fitness plan. What should she include to meet the weekly guidelines most commonly recommended for adults and teens? (1 point) Responses She should include 150 minutes of strength training activity. She should include 150 m...

1 year ago

Step 1: Find Your Resting Heart Rate (Complete this step in the morning, right after you first wake up.) Refer back to the directions in Unit 1, if you need help finding your pulse. In the morning, before doing anything else, take your pulse by counting t...

1 year ago

How do you say "I do not like to write stories" in Spanish? (1 point) Responses Me gusta leer revistas Me gusta leer revistas No me gusta ir a la escuela. No me gusta ir a la escuela. No me gusta montar en bicicleta. No me gusta montar en bicicleta. No me...

1 year ago

What is the name of the late afternoon snack that many people in the Spanish-speaking world enjoy? (1 point) Responses la merienda la merienda la sobremesa la sobremesa la cumbia la cumbia el desayuno

1 year ago

Nos gusta _______ el almuerzo en el restaurante. (1 point) Responses comemos comemos comes comes comen comen comer

1 year ago

How do you say, "The girl is hard-working" in Spanish? (1 point) Responses El chico es trabajadora. El chico es trabajadora. Las chicas son trabajadoras. Las chicas son trabajadoras. La chica es trabajadora. La chica es trabajadora. La chica es trabajador...

1 year ago

Which question do you ask if you want to know how to say something in Spanish? (1 point) Responses ¿Qué pasa? ¿Qué pasa? ¿Cómo se dice? ¿Cómo se dice? ¿Cómo te llamas? ¿Cómo te llamas? ¿Qué tiempo hace?

1 year ago

Which English word has the same sound as the Spanish letter ñ? (1 point) Responses panda panda phantom phantom banana banana canyon

1 year ago

how do you say running in spanish

1 year ago

How do you say "I don't like to skate at all" in Spanish? (1 point) Responses No me gusta practicar deportes. No me gusta practicar deportes. Me gusta trabajar mucho. Me gusta trabajar mucho. No me gusta nada patinar. No me gusta nada patinar. Me gusta má...

1 year ago

What is a main difference between the Pan American Games and the Olympic Games? (1 point) Responses The Pan American games are held every 6 years, while the Olympic Games are held every 4 years. The Pan American games are held every 6 years, while the Oly...

1 year ago

Miguel _______ matemáticas. (1 point) Responses enseña enseña estudian estudian hablo hablo necesitamos necesitamos

1 year ago

Which is not a difference between schools in Puerto Rico and schools in Los Estados Unidos? (1 point) Responses Classes are conducted in Spanish. Classes are conducted in Spanish. Students wear uniforms. Students wear uniforms. There are homeschooling opt...

1 year ago

what is una mochila

1 year ago

______ papeleras están al lado de la puerta. (1 point) Responses El El La La Los Los Las Las

1 year ago

ok

1 year ago

thx

1 year ago

🎆🎇 ok

1 year ago

helo

1 year ago

Which of the following is the correct energy transformation of a flashlight? 1 point Captionless Image electrical to thermal to chemical light to electrical to chemical chemical to electrical to light

1 year ago

Describe the three labeled methods of heat transfer in order. For example, A is ____. Identify and describe one example of heat transfer at your house. 1 point Captionless Image

1 year ago

How does thermal energy move? 1 point Captionless Image from hotter to cooler until all the substances attain the same temperature from cooler to hotter until all the substances attain the same temperature from hotter to warmer until all the substances at...

1 year ago

Which of the following describes kinetic energy? 1 point stored energy energy of motion energy of reaction

1 year ago

it has to be 1 of the answers

1 year ago

🎆🎇

1 year ago

what?!

1 year ago

yeah your previous response was not clear. it was in spanish

1 year ago

why was it in spanish

1 year ago

ok

1 year ago

3+7⋅p-missing number

1 year ago

3+7⋅p− Complete the following stepped-out solution to show that 3+7(p−11) is equivalent to 7⋅p−74 .(2 points)

1 year ago

Use the picture to answer the question. An illustration shows the convection currents in a room. The warm air current rises and is replaced by cooler air currents. Which type of energy transfer is shown in the picture? (1 point) Responses density density...

1 year ago

u sure?

1 year ago

ok doky

1 year ago

Use the table of temperatures measured in two areas of a house to answer the question. Area Temperature (ºC) downstairs 22 upstairs 26 Which statement best explains the temperature difference? (1 point) Responses Energy is transferred between the areas wh...

1 year ago

Which option is an example of heat transfer by conduction?(1 point) Responses air getting warm from a radiator air getting warm from a radiator air conditioner cooling the room air conditioner cooling the room person getting warm from an electric blanket...

1 year ago

you got this one wrong Use the table of temperatures from several areas to complete the statement. Area Temperature (ºC) X 22 Y 18 Z 18 Air will move from _____. Responses area X to area Z area X to area Z - not selected, this is the correct answer area Y...

1 year ago

to late!

1 year ago

A student wants to collect data during an experiment about the transfer of kinetic energy in a sample of water and ice. Which tool will help her collect the necessary data?(1 point) Responses meter stick meter stick graduated cylinder graduated cylinder b...

1 year ago

Use the table to answer the question. Sample Temperature (°C) 1 98.2 2 46.0 3 100.6 4 31.4 A student records the temperature of several water samples as shown in the table. Other than the temperature, the water samples are the same. Which sample has the l...

1 year ago

Thermal Energy Unit Test 6 of 96 of 9 Items Question Use the picture to complete the statement. An illustration shows convection currents in water, with the warm water rising upward, and the cold water moving down to the bottom. The arrows in the pot repr...

1 year ago

A teacher opens a window on a cold day. Which statement explains why the room starts to feel cooler? (1 point) Responses Cold air is moving into the room from outside. Cold air is moving into the room from outside. The density of the air is lower on the i...

1 year ago

A student takes the temperature of a bottle of liquid water and a tub filled with ice. The student then places the bottle of liquid water into the tub of ice. After 15 minutes, which of the follow best describes what happens to the temperature of each? (1...

1 year ago

An object falls through the air, gaining speed as it falls. A student claims that this creates new energy, and so it breaks the law of conservation of energy. Which statement describes why the student is incorrect?(1 point) Responses Energy can be created...

1 year ago