Chemistry High School

Can someone help with this one I’m desperate

Answers

Answer 1

Answer:

Explanation:

im not that sure if its correct

Answer 2

Logically, just put it in the fridge.

Related Questions

How do you convert 8.5600x[tex]10^{2}[/tex] from scientific notation to standard notation?

Answers

Answer:

856.00

Explanation:

just move the decimal two places to the right :)

1.54x10-1 L / 2.36x 10-45 solve this in scientific notation

Answers

Answer:

Fish is the best time to go

Explanation:

Chicken nuggets and a salad and some onion rings and a new charger

Two objects are moving in a straight line. One object has a faster speed than the other. They both have constant speeds (speed is not changing). Is either object accelerating?

Answers

Answer:

Explanation:

Acceleration refers to the increase in speed over time. Since both of the objects are moving at a constant speed (so the speed is not changing) neither are accelerating, because acceleration requires a positive change in speed.

They may be moving at different speeds, one faster than the other, but neither are changing their own speed so neither are accelerating.

Hope this helped!

Which of the following questions can be answered by science? (5 points)

Answers

Answer:

you didn't put the question

Explanation:

Answer:

I. Why is land use more important than water use?

II. Why do human activities affect land?

Explanation:

Why was cowpox not deadly as smallpox?

ANYONE WHO ANSWERS THIS GETS BRAINLIEST ANSWER

Answers

Cowpox wasn’t deadly as smallpox because they used it as a vaccine against smallpox.

2. Which set of symbols represents isotopes of the same element?
Set 2
Set 1
80
м
38
133
81
M
38
83
M
38
132
Q
55
Q
133
Q
54
55
Set 4
Set 3
50
L
19
50
L
20
50
L
21
91
J
43
92
J
42
93
J
42

Answers

The set of symbols that represents isotopes has been 84/38 M 86/38 M 87/38 M. Thus, option D is correct.

The isotopes are the elements with same atomic number, but different mass number. In an isotope [tex]\rm ^a_bX[/tex], a has been the atomic mass, and b has been the atomic number.

The isotopes will have same value for b, while different values for a.

In the following given sets:

A. 50/19 L 50/20 L 50/21 L

It has same number of mass the atomic number has been different. Thus, the set not represents isotopes.

B. 138/59 Q 133/55 Q 133/54 Q

The given elements, has different atomic number, and different mass number. Thus the set did not represents the isotopes.

C. 91/42 J 92/42 J 93/40 J

The given elements, has different atomic number, and different mass number.Thus the set did not represents the isotopes.

D. 84/38 M 86/38 M 87/38 M

The given set has same atomic number with different mass number.Thus, the set has been the representation of isotopes.

The set of symbols that represents isotopes has been 84/38 M 86/38 M 87/38 M. Thus, option D is correct.

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how do I explain chromotography without memorizing

Answers

this is what i usually do -

watch videos based on the topic and take notesread articles based on the topic watch documentaries based on the topic

this is what works best for me it may work different for you but using these methods i'm able to do well on tests without really memorizing much

hope that helps :)

Answer:

its good

Explanation:

it's great vsvhebejehsdhdbehhebehdbeh

Need help with this

Answers

Answer:

Its enviormental science because enviormental science is an interdisciplinary academic field that integrates physical.

how many valence electrons are in the element gallium? explain how you determined the number.

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Gallium has three valence electrons.

Elements in the periodic table are classified into groups and periods. Elements in a given group have the same number of valence electrons on their outermost shell while the elements in a period have the same number of shells.

All the elements in group 13 have three electrons in their outermost shell. Gallium is an element of group 13. This means that gallium also has three electrons in its outermost shell(valence electrons).

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Gallium has 3 valence electrons (1 electron in the 4p orbital and 2 electrons in the 4s orbital) because the valence electrons are those located in the outermost energy level of an atom.

Gallium has an atomic number of 31, which means it has 31 electrons in total. The electron configuration of gallium can be represented as [Ar] 3d¹⁰ 4s² 4p¹.

Within the n=4 shell, gallium has electrons in the 4s and 4p orbitals. The 4s orbital can hold a maximum of 2 electrons, while the 4p orbital can hold a maximum of 6 electrons. In the case of gallium, there is 1 electron in the 4p orbital.

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Testing a hypothesis is

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Answer:

State the hypotheses. Every hypothesis test requires the analyst to state a null hypothesis and an alternative hypothesis. Formulate an analysis plan. The analysis plan describes how to use sample data to accept or reject the null hypothesis. Analyze sample data. Interpret the results.

Explanation:

Answer:

Your hypothesis is what your guess is for an answer and testing would be to test your hypothesis to see if its right

Explanation:

please help me with answering this question :( asap!!

Answers

Answer:

32. CnH2n+2

33. Ester

34. Water and corbondioxide.

35. dibromoethane

the following statement is an example of "if i post a image on Instagram at 7:00 pm, then ill get the most likes a. hypothesis b. problem c. experiment d. independent variable
I NEED HELP NOW PLEASE HELP ME AS FAST AS U CAN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

Explanation:

The given statement if i post a image on social media at 7:00 pm, then ill get the most likes is a hypothesis.

What is hypothesis?

Hypothesis can be defined as an assumption which is made for the sake of argument . It is an interpretation of a practical condition for which action needs to be taken.It is defined as a tentative assumption which is made to test logical consequences.It is an antecedent clause of a statement which is conditional.

It is constructed before research. There are six types of hypothesis 1)simple hypothesis 2) complex hypothesis 3) directional hypothesis 4)non-directional hypothesis 5) null hypothesis 6)casual hypothesis

The hypothesis should be clear and precise, it must be specific and way of explanation of hypothesis should be simple.

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If you had zinc and copper and melted it down into uranium what would happen? I will mark brainliest

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Answer: Major radioactive elements (such as uranium) break down and create lead as one of ... Exposure to even small amounts of lead can be harmful since lead has no use in the body. ... of all industrial metals in the world because lead is easily re-melted and refined. ... Other metals that are found with zinc are silver and copper.

Explanation:

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Njfstubs yo f try if yo nfkkkg in dtncfuvduj

Are all physical reactions reversible?

Answers

no not all. for example cutting down a tree is a physical reaction/change but it is not something you can redo.

Approximately how tall is Baker Hill? Don't forget your unit

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Answer:

the elevation is 1,539

Explanation:

Tertiary or top consumers are animals at the top of the food web. They may feed off either primary or secondary consumers. What animals would fit into this classification?

Answers

Answer:

Coyotes, Bald Eagles, & Gray wolf.

Boron (B) has two Isotopes, boron-10 and boron-11. The atomic weight of boron is the

A. combined masses of boron-10 and boron-11

B. average number of neutrons in boron-10 and boron-11

C. weighted average of the masses of boron-10 and boron-11

D. mass of boron-10 minus the mass of boron-11

Answers

Answer:

C. is the correct answer

Explanation:

I just completed this question and got it correct.

Jessica poured a liquid into the graduated cylinder below. What is the volume of the liquid?

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Need more info to answer the question

Answer:

Answer is B

Explanation:

which shows as evidence for a scientific claim. A- surveys of public opinion B- company advertisments C-controlled experiments D- personal websites

Answers

Answer:

You do not know if the advertisement is lying to you. Controlled experiments will be biased and personal websites will say what they think, not following the data & science.

Read the time line. A timeline. The timeline lists the following years: 100 B C E, 1 C E, 100 C E, 200 C E, 300 C E, 400 C E, 500 C E. What time intervals are used on the time line? one year one hundred years five hundred years one thousand years

Answers

100 years

There's 100 years in between each listed year.

Answer:

A 100

Explanation:

How are elements with atomic masses greater than Uranium’s made?

Answers

Atoms heavier that uranium do not exist in nature.they must be synthesized in a particle accelerator.

Answer:Atoms heavier that uranium do not exist in nature.they must be synthesized in a particle accelerator

Explanation:

Isotopes of an element have 2 things that change. What are they?

Answers

Answer:

Explanation:

Isotopes are different in neutrons and mass number.

Greg ran for 25 minutes at a speed of 5 km/m. Find the distance.

Answers

Here it is⬆️ Distance is 125 km

A scientist observes that the electric resistance of a superconducting material drops to zero when the material is cooled to very low temperatures which of the following statements best describe what the scientist is observing

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Answer: The scientist is observing an intensive property of a superconductor. ( So C)

Explanation: edu

Answer: the scientist is observing an intensive property of a superconductor.

Which element has an atomic mass of 106.42?

Answers

Answer:

carbon

Explanation:

The element which has atomic mass of 106.42 is carbon as per the existing isotopes.

What is an element?

It is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.

Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.

The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.

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Mick has a glass of water. Which of the following tools could he use to measure the volume of water he has in the glass? A. a spring scale B. a triple beam balance C. a metric ruler D. a graduated cylinder

Answers

Answer:

Explanation:

Study Island

Answer:

D. a graduated cylinder is the correct answer

Explanation:

Matter and energy are
OA) similar to work and distance.
OB) interconvertible.
O C) not related to each other.
O D) similar to mass and weight.

Answers

When energy transforms into mass, the amount of energy does not remain the same. When mass transforms into energy, the amount of energy also does not remain the same. However, the amount of matter and energy remains the same. ... You would weigh much less on the Moon because it is only about one-sixth the mass of Earth. So the answer is D

kate and williams wedding cost about 21,000,000 english pounds how much is this in american dollars if

Answers

Answer:

Explanation:

bru

Which term describes a mixture that is not uniform throughout?
1. chemically bonded
2. heterogeneous
3. homogeneous
4. solution

Answers

The term that best describes no being uniform throughout is heterogeneous

There are a equal number of protons and electeons in natural atoms True or false

Answers

Answer:

false

Explanation:

There are a equal number of protons and electrons in neutral atoms.

Other Questions

Jasmine spends exactly 120 on three types of plants: poisoned ivy, deadly nightshade and triffids. Poisoned ivy plants cost 2 each, deadly nightshade plants cost 9 each and triffids cost 12 each. She buys twenty plants in total, including at least one of each type. How many triffids did she buy? I BET NO ONE KNOWS THIS QUESTION which of the following is a social norm?A. Stopping at a red light in an intersection B. Caring for an elderly neighbor by pulling her weeds once a weekC. A group of hispanic families who choose to live in the same neighborhood or communityD. All the choices are correct Please Answer Dis . Explain how the Qing Dynasty responded to foreign attempts at trade during the18th century A picture of a ____ is the label pictogram on a chemical that warms of a product's acute toxicity The actual monetary loss resulting from the tea destroyed in Boston Tea Party was small. True or false Ex of physical Properties If you get this you are a critical thinker. I enter the garden. There are 34 people. You kill 30. How many people are in the garden. Good luck! If you get it correct your answer will be deleted and l will message you to continue the game. Choose a number line to model the following situation. After walking 5 steps forward, Julie walked 5 steps backward. prove using multiple formulacos 70 - cos 10 + cos 50 = 0 If the distance between two charged particles is doubled, the force between them changes by a factor of ___. (1 point)1/21/424 There is a 40% chance of rain on Tuesday and a 50% chance of rain on Friday. What percent chance will it rain both Tuesday and Friday? Write a letter. (Giving advice)Your friend wants to introduce his partner to his parents. The parents are conservative and his girlfriend is a bit young, so your friend needs your advice what to do, how to do.write a letter to your friend in which you give advice about- when and how to introduce the girlfriend to the parents.- reassure your friend that there will be no problems with the parents.- tell him what to pay attention to.The letter showed be at least 100 word long. Include all the aspects above. Use the expressions from the giving advice list! Rae was estimating the difference between two positive numbers x and y (where x > y). First she rounded x up by a small amount. Then she rounded y down by the same amount. Finally, she subtracted the rounded numbers.Which of the following statements is correct?Question options:Her estimate is larger than x y.Her estimate is smaller than x y.Her estimate equals x y.Her estimate equals y x.Her estimate is 0. 8. The students were looking at their debts, Holmes is in $90,00 of debt.Reyes has $67.00 of debt. Dixon has $79.00 of debt. Hunter has a positivebank balance of $100.00. Who owes the most money?Please help me Is Lubbock is the largest city in the South Plains section of Texas? True or False. what is the difference between head of state and head of government? Identify the property of real numbers illustrated in the following equation.6x + (-6x) = 0 Billy borrowed $400 from his friend Tommy to get his truck fixed. The next time he got paid, Billy paid Tommy back $100, then agreed to pay $25 a week until his debt was paid off. 1.Write a linear equation to represent the amount of money m Billy owes Tommy after w weeks. 2.How long will it take Billy to pay off his debt to Tommy? How does genetic variation within a species increase the chance of survival in a species in a changing environment? explain and provide an example