Question by Chemistry

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Seen 1 years ago tubiactor 1 answers

Which of the following helps us see atoms? (20 points including brainliest if correct) A. Advanced telescopes B. Our eyes C. Large hand lenses D. Powerful microscopes

Seen 2 years ago yuly325ip8s7mg 1 answers

why the elements of groups 1 and 7 are mostly used in the form of compound

Seen 2 years ago frsk6tzd4q 1 answers

Which of an atom's electrons are involved in chemical reactions? a. The electrons farthest from the nucleus of the atom b. The electrons that make one isotope different from another c. The electrons that determine the atomic number of the atom d. The electrons closest to the nucleus of the atom

Seen 1 years ago linadea 2 answers

A lithium (Li) atom has 1 valence electron. Which of the following would be the most likely way for a lithium atom to become stable?

Seen 2 years ago kun77 2 answers

C.5A Write the SYMBOL of the atom shown below: *

Seen 2 years ago kgriffin974 2 answers

Change Worksheet answer the following questions. The graph was drawn from data collected as a substance was heated at a constant rate. Use the graph to 180 160 Phase Change Diagrarn 140 120 Temperature (°C) 100 D B स 80 60 40 2 4 6 8 16 18 20 22 10 12 14 Tim e (minutes) At point A, the beginning of observations, the substance exists in a solid state. Material in this phase has Deontz_ volume and __ha2_shape. With each passing minute, is added to the substance. This causes the molecules of the substance to me more rapidly which we detect by a t2 Maturise in the substance. At point B, the temperature of the substance is __°C. The solid begins to_A At point C, the substance is completely or in a mate state. Material in this phase has_Det volume and shape. The energy put to the substance between minutes 5 and 9 was used to convert the substance from a 3D This heat energy is called the latent heat of fusion. (An interesting fact.) to a to a Between 9 and 13 minutes, the added energy increases the du of the substance. During the time from point D to point E, the liquid is By point E, the substance is completely in the phase. Material in this phase has volume and shape. The energy put to the substance between minutes 13 and 18 converted the substance from a state. This heat energy is called the latent heat of vaporization. (An interesting fact.) Beyond point E, the substance is still in the phase, but the molecules are moving as indicated by the increasing temperature, Substance Melting point Boiling point Bolognium 20°C 100 °C Which of these three substances was likely used in this Unobtainium 40°C 140 °C phase change experiment? Foosium 70 °C 140°C ONUS: For water, the value for the latent heat of vaporization is 6.8 times greater than the latent heat of fusion. Imagine we were ding heat at a constant rate to a block of ice in a beaker on a hot plate, and it took 4 minutes for the ice to melt completely. How uld it take, after the water started boiling, for the beaker to be completely empty (the liquid water totally converted to water van

Seen 1 years ago Dottyillie 1 answers

LIST TWO REASONS WHY WE SHARE OUR RESULTS A SCIENTIFIC INVESTIGATION

Seen 2 years ago sorayao9miranda 1 answers

8. Explain why fluorine has a smaller atomic radius than chlorine.

Seen 1 years ago skjesjsk 1 answers

What effect does the speed of the water in the Colorado River have on the appearance of the Grand Canyon?

Seen 2 years ago reverseflashspeed 2 answers

C.5A What atom is shown below? * 8 points 19 p 20 n Cholrine Argon Calcium Potassium

Seen 2 years ago kgriffin974 1 answers

what is the frequency of a 2,600 cm wave

Seen 2 years ago mbalepogii 1 answers

If you had excess chlorine, how many moles of aluminum chloride could be produced from 12.0g of aluminum

Seen 2 years ago 1626158 1 answers

a. Calcular el porcentaje en masa de una disolución que contiene 20 g de azúcar en 280 g de agua:

Seen 2 years ago dannyglez2007 1 answers

PLS HELP Make this a brief short summary.....

Seen 1 years ago SillyLea01 1 answers

The positions of the Earth, moon, and Sun above could produce what kind of eclipse?

Seen 1 years ago manniekennedy75 1 answers

Which group have spore- dispersing vascular plants? * 2 points Thallophytes Pteridophytes Bryophytes Gymnosperms

Seen 1 years ago lovershorty13 1 answers

Which of the following is an opening on the surface of a planet or moon that allows material warmer than its surroundings to escape from its interior? Question 10 options: Tsunami Volcano Tornado Earthquake

Seen 1 years ago andresjohnston 1 answers

Which of the following atoms will have the most similar properties to the atom shown below?

Seen 1 years ago kingslayer67 1 answers

KI + Pb(NO3)2 → Pbl2 + KNO3 This chemical reaction represents the reaction of potassium iodide (KI) and lead nitrate (Pb(NO3)2) to form lead iodide (Pbl2) and potassium nitrate (KNO3). When correctly balanced, the coefficient for lead iodide will be_________. Select one: 3 6 2

Seen 2 years ago ym65hvwzme 1 answers

. What is the total number of protons, neutrons, and electrons in a cadmium, Cd, atom that has a mass number of 112? PLEASE I NEED HELP

Seen 1 years ago kingslayer67 1 answers

What is the difference between variable and fixed costs?

Seen 2 years ago 07152004 1 answers

The force excerted by air molecules in all directions is called

Seen 1 years ago erickasmith1416 1 answers

Which of the following atoms will have the most similar properties to the atom shown below

Seen 2 years ago kingslayer67 1 answers

Which of the following atoms will have the most similar properties to the atom shown below

Seen 2 years ago kingslayer67 1 answers

Layla is helping to clean car parts with a single chemical, but it isn't working. She washes her hands and tries a different chemical, which also does not work. She resumes with the first chemical without washing her hands. This time, the cleaning process works, but she begins to get dizzy and nauseated. What can Layla infer about the possible reason for her illness? It is an acute effect of two toxins with a synergistic relationship. It is a chronic effect of the second toxin she used to clean the parts. The first chemical has an antagonistic relationship with the second. The second chemical causes acute affects, and the first causes chronic affects.

Seen 2 years ago Reefwblackford 1 answers

The density of alcohol is 0.91 g/mL. What volume would 312 g of alcohol occupy?

Seen 2 years ago riveraar3 1 answers

Using one or more of your senses to gather information is called observing c predicting b inferring d classifiying

Seen 2 years ago favianvmartin30 1 answers

How is the molar mass of a molecule determined? What are its units?

Seen 1 years ago 238685 2 answers

When electrons are shared between atoms, a covalent bond is formed True False

Seen 2 years ago rabdiel2008 1 answers

how many moles of oxygen are present in 16g of oxygen gas?(O=16)

Seen 1 years ago goodwillmoses80 1 answers

Is medicine, such as the aspirin shown in the image above, an example of science or technology?

Seen 1 years ago favianvmartin30 1 answers

What is an engineer? a person trained to use technology and science to solve problems b. a person who manufactures or produces a product с. a person who markets and advertises a product d all of the above

Seen 2 years ago favianvmartin30 1 answers

PLEASE HELPONE WRITTEN QUESTION NO LINKS!!!!!!!!- Using the graph above, describe the connections between temperature of a solvent and the solubility of a solute that is a solid.

Seen 1 years ago angelwantssleep 1 answers

What is the mass of 15.0 moles of gold?

Seen 2 years ago yagirlshell 1 answers

Summarize the advantages and disadvantages of nuclear energy. Will give brainliest!! Don't answer if you don't know!! I need more than 8 paragraphs for this one so please make it good.

Seen 1 years ago lok204 1 answers

What evidence supports the theory of continental drift? Select three. Question 10 options: Fossils of plants and animals Distinctive rock layers and mountain ranges Glacial scratches on rocks Volcanic activity along the Ring of Fire

Seen 2 years ago andresjohnston 1 answers

Someone please make some random info but it has to make sense and be acurate please and thanks.

Seen 1 years ago nathanielramos215 1 answers

What numbers balance the equation:_ C2H6+_O2–> _CO2 +_H20

Seen 1 years ago lisandro0 1 answers

Why does an object's weight change on the moon but their mass stays the same?

Seen 2 years ago camryn1028 2 answers

What was the main reason why Alfred Wegener’s theory about the movement of the continents was dismissed in 1912? Question 8 options: His map of the ocean floor did not support his theory His theory was the first to observe the continents fit together His theory explained the Earth was expanding as the plates moved He didn’t know about plate tectonics to explain how the plates moved

Seen 2 years ago andresjohnston 1 answers

HELPPP In Ernest Rutherford's gold foil experiment, he directed a beam of alpha particles at a thin sheet of gold foil. Why didn't all of the alpha particles pass through the gold? Select one: Some of the alpha particles came into contact with the electrons. Some of the alpha particles came into contact with the relatively massive nucleus. Some of the alpha particles came into contact with the electron cloud. Some of the alpha particles came into contact with other alpha particles.

Seen 2 years ago ym65hvwzme 1 answers

Convection currents are one force driving plate tectonics. What other force plays a major role? Question 9 options: Heat transfer Fossil formation Gravity Radioactive decay

Seen 1 years ago andresjohnston 1 answers

The forces exerted on an object are shown.help asap!!!!! (i will mark brainliest)A box has an arrow pointing down labeled F and an arrow pointing up labeled 5 N.Which of the following happens when F is less than 5 N?The object moves up.The object moves down.Balanced forces keep the object stationary.Balanced forces keep the object's speed constant.

Seen 1 years ago jeannie3902 2 answers

Which statements support the student's claim that the matter and energy o the instant hot pack are conserved even though the temperature of the instant hot pack changed? Select the two correct statements. The mass of the instant hot pack did not change because the A same amount of matter was present. e The mass of the instant hot pack did not change because the total amount of energy was conserved. Matter was conserved because it flowed from the hot pack to С the jar, as shown by the temperature data. Energy was conserved because it flowed from the instant hot D pack into the jar causing the jar to warm, as shown by the temperature data. The instant hot pack transferred energy as cold flowed from the jar into the hot pack and changed the temperature of the jar, until both were at the same temperature.

Seen 2 years ago nevaeh9394 1 answers

Describe how glacier mice are complete ecosystems, even though they are tiny. GIVING BRAINIEST

Seen 2 years ago londonsimmons23 1 answers

A. Explain why similar rock sequences and ages support the claim that the continents have moved over time. B. Look at the map of the location of continents 200 million years ago. Based on the map, identify which continent would be the most likely place to find rock sequences and ages similar to these, and explain why.

Seen 1 years ago deibimunguia4 1 answers

2. In what state are particles spread farthest apart? A)solid B)liquid C)gas 3. How does thermal energy explain your answer to #2?

Seen 1 years ago camryn1028 1 answers

Which statements accurately describe the rock cycle? Check all that apply. Any type of rock can change into any other type of rock by weathering and erosion. Rocks change from one type to another in a definite order. Rocks change slowly over time. The rock cycle shows how the three rock types relate to one another. Rocks last forever.

Seen 1 years ago Ariannambballer19 1 answers

A fictitious element X is composed of 10.0 percent of the isotope 55 X, 20.0 percent of the isotope 56 X, and 70.0 percent of the isotope 57 X. Estimate the atomic mass of element X.

Seen 1 years ago skyla2337 1 answers

Question by "Chemistry "

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In Lixue's garden, the green pepper plants grew 5 inches in 3/4 month. At this rate, how many feet can they grow in one month (Lets 5 inches = 5/12 foot)

b) How far apart are the square roots of numbers that are 10 apart likely to be?I dont understand what this question is asking nor do i understand how to get the answer ples help 😭

each stanza in this poem has six lines. which lines rhyme within each stanza?

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Question by "Chemistry "

All "Chemistry " Questions

Number Achievement

New Questions

In Lixue's garden, the green pepper plants grew 5 inches in 3/4 month. At this rate, how many feet can they grow in one month (Lets 5 inches = 5/12 foot)

b) How far apart are the square roots of numbers that are 10 apart likely to be?I dont understand what this question is asking nor do i understand how to get the answer ples help 😭

each stanza in this poem has six lines. which lines rhyme within each stanza?

Popular Topics

HOC.INFO Q&A communities are different. Here's how

Expert communities.

The right answer. Right on top.

Share knowledge. Earn trust.

Company

Legal Stuff

Help

HOC.INFO Q&A communities are different.
Here's how