help me please(。+‿+。)​

Help Me Please(++)

Answers

Answer 1

4. Change in temperature (。^‿^。)


Related Questions

N2 + 3H2 2NH3
Using the balanced equation above for the production of ammonia from nitrogen and hydrogen, how many moles of NH3 are produced when 1.7 moles of nitrogen reacts with hydrogen?

Answers

Answer:Considering the N2 only, 3 mols of N2 could form 6 moles of NH3. Considering the Hydrogen only, 8 moles of H2 could make 16/3 or 5 1/3 moles of NH3. 5 1/3 is less than 6, so the reaction is limited by the hydrogen, and 5 1/3 is the correct answer. Note that in reality this reaction does not go to completion, and this is just a textbook exercise.

Explanation:

In the water cycle we can observe transformations:
a) Permanent
b) Temporary
c) Chemical
d) None of the above

Answers

Answer:

b

Explanation:

temporary bc it's have time so the water can cycle

B is the answer. The water cycle transformations are TEMPORARY because it can change states of matter and is a physical change not a chemical one.

WARNING this is Not chemistry it is science



Please answer at least one of these questions:

Answers

Microscopes help you see cells on the molecular level, That’s how it helped cell theory

calcium + sulfuric acid =

Answers

Answer:

Calcium metal will react with sulfuric acid to produce calcium sulfate  solution, and hydrogen gas.

Please let me know if I'm wrong.

Answer:

The reaction between calcium and sulphuric acid produces calcium sulphate, a salt and hydrogen gas. It is a single displacement reaction.* Calcium is a metal.* Sulfuric acid as the name suggests is an acid.

Hope I could be of service

what are the 7 different electromagnetic waves

Answers

The electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays.

* do consider marking me brainliest, if it does help, do also correct me if I am wrong in some way. thank you <3.

someone please answer this i need help i’ll give brainly.

how many atoms of carbon of 8 molecules of C2H2

Answers

Answer:

16

Explanation:

2 per molecule X 8 molecules in total

In an atom, what is the maximum number of electrons that can have the following quantum numbers?.

Answers

It can have around 30-32 at the same time

If I throw a 10 kg ball with a force of 60 N, what will the ball's acceleration be?

Answers

Answer:

6

Explanation:

f=ma (from Newton's second law of motion)

A force of 3000N is applied on a 20kg ball. Find the acceleration of the ball

Answers

Answer:

force = 3000N

mass= 20 kg

now

F= ma

3000= 20×a

3000÷20=a

a=15

F= ma by newtons second law of motion

A chemist burns 650.0 g of C4H8S2 in excess oxygen, according the following balanced chemical reaction:
C4H8S2+ 902 -> 4CO2 + 4H2O +2S03
If the chemist has 92.2% yield, how many grams of SO3 were produced?

Answers

Answer:

952.2g SO3

Explanation:

Molar mass of C4H8S2 is 120.2363 g/mol

Mol in 750.0g = 750.0/120.2363 = 6.238 mol

1mol C4H8S2 produces 2 mol SO3

6.238 mol will produce 2×6.238 = 12.476 mol SO3

Molar mass SO3 = 32+3×16 = 80.0g/mol

Theoretical yield = 12.476×80.0 = 998.08g

The actual yield is 95.4%

Actual mass-produced = 95.4/100×998.08 = 952.2g SO3 produced

Hope it will help you.

Calculate the number of grams of xenon in 4.811 g of the compound xenon tetrafluoride.

Answers

Explanation:

Mass of xenon tetrafluoride = 4.658 g

To determine the number of grams of xenon in 4.658 grams of the compound xenon tetrafluoride:

The chemical formula for xenon tetrafluoride is XeF_4XeF

4

Molar mass of XeF_4XeF

4

= 207.28 g/mol

Molar mass of xenon = 131.29 g/mol

First of all, we would calculate the number of moles of XeF_4XeF

4

.

\begin{gathered}Number\;of\;moles = \frac{mass}{molar\;mass}\\\\Number\;of\;moles = \frac{4.658}{207.28}\end{gathered}

How does extreme pressure affect the volume occupied by a real gas compared to the predictions of the ideal gas law? (3 points)

Group of answer choices

The true volume of the gas will be higher than predicted by the ideal gas law because the attraction between the particles is weaker under high pressure.

The true volume of the gas will be lower than predicted by the ideal gas law because the attraction between the particles is weaker under high pressure.

The true volume of the gas will be higher than predicted by the ideal gas law because the volume of the actual particles is more significant under high pressure.

The true volume of the gas will be lower than predicted by the ideal gas law because the volume of the actual particles is more significant under high pressure.

Answers

At a very high pressure, the volume of occupied by a real gas  is greater than the volume predicted by the ideal gas law, because the volume of the actual particles is more significant under high pressure.

Behavior of gases at low pressure and high pressures

At low pressure, the distance between gas molecules is relatively far apart, but as the pressure of the gas increases, the distances between theses gaseous molecules becomes smaller.

Due to the high pressure the volume occupied by the gas molecules becomes significant compared with the volume of the container.

As a result, the total volume occupied by the gas will be greater than the volume predicted by the ideal gas law.

Thus at a very high pressure, the volume of occupied by a real gas  is greater than the volume predicted by the ideal gas law, because the volume of the actual particles is more significant under high pressure.

Learn more about behavior gases under pressure here: https://brainly.com/question/13512523

Answer: The fourth answer

Explanation:

Under high pressure, real gases deviate from ideal gas behavior as their particles have a finite size and experience intermolecular forces, causing the actual volume of the gas to be lower than predicted by the ideal gas law.

Please help me

Science

As consumption of a synthetic material increases, the associated negative impacts to Earth required to produce the material increase.

O True
O False​

Answers

Consumption of a synthetic material being increased, leads to an associated negative impacts to Earth required to produce it is a True statement.

What is a Synthetic material?

There are the materials which are made by humans through chemical synthesis which are usually done in factories.

The production of this type of materials leads to the emission of chemicals and other gases which are harmful and negatively impacts the environment.

Read more about Synthetic material here https://brainly.com/question/24357817

8. Which elements are recycled during the processes of photosynthesis and cellular respiration?

oxygen, hydrogen, and nitrogen

carbon, nitrogen, and oxygen

carbon, hydrogen, and
oxygen

Answers

Answer:

The four substances recycled during photosynthesis and respiration are carbon dioxide, water, oxygen, and glucose.

So because you don't have all these choices, just pick, carbon, hydrogen, and oxygen, which is the last answer.

Thanks!

Mark me brainliest!

~[tex]MiniMeteorologist\\[/tex]~

Answer:

carbon hydrogen and oxygen

Explanation:

Why does the chance of precipitation increase when the humidity is high?

Because the amount of moisture in the air increases as precipitation falls
Because the amount of moisture in the air decreases as humidity increases
Because the high humidity causes the air to hold more moisture
Because the amount of water vapor in the air increases

Answers

Answer:Because the amount of water vapor in the air increases

Explanation:In humid climates, thunderstorms often cause heavier rain than general wintertime rainfall since moisture content in the air typically is higher in the spring and summer, and since air usually rises at a much more rapid rate within developing thunderstorms than in general winter systems.During very heavy rainfall, where all of the water in the atmosphere is often rained out, the water vapour content governs the amount of rainfall. The higher the humidity the greater the water vapour, and the more rain we're likely to see. HOPE THIS HELPS ^w^

which statement is true/false answer

Answers

Answer:

yellow is false and black is true.

Which reagent is used to detect the presence of protein?.

Answers

Answer:

Sample Respond: The presence of protein is tested by the Biuret test for proteins. The Biurette reagent made of sodium hydroxide and copper (II) sulfate helps in determining the presence of protein in a sample.

Explanation:

I got 100 % trust me

The electron geometry of carbon dioxide is...

1.tetrahedral
2.linear
3.planer

NEED ANSWER ASAP!!!!! 55 POINTS

Answers

The answer to this problem is Linear

what is the Lewis dot structure for NOH3

Answers

hope this helps, have a good day!

In this structure, Nitrogen (N) has a lone pair of electrons, Oxygen (O) has a lone pair of electrons, and each Hydrogen (H) atom has two electrons and no lone pairs.

The Lewis dot structure for [tex]NOH_{3}[/tex] (nitrosamine) can be determined by following a few steps:

Count the total number of valence electrons in the molecule. Nitrogen (N) contributes 5 valence electrons, Oxygen (O) contributes 6 valence electrons, and Hydrogen (H) contributes 1 valence electron each. So, the total number of valence electrons is:

5 (N) + 6 (O) + 3 (H) = 14 valence electrons.

Identify the central atom. In this case, Nitrogen (N) is the central atom since it can form more bonds compared to Oxygen (O).

Connect the atoms using single bonds. In [tex]NOH_{3}[/tex], Nitrogen (N) is bonded to Oxygen (O) and three Hydrogen (H) atoms.

Place the remaining electrons around the atoms to complete their octets. Start by filling the octet of the atoms bonded to the central atom, and then distribute the remaining electrons to satisfy the octet rule. If there are extra electrons, place them on the central atom.

Learn more about Lewis Dot Structure, here:

https://brainly.com/question/28652824

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What is the average “lifespan” of the following cells:
Red blood cell:
Brain cell:
Skin cell:
Heart muscle cell:
Fat cell:

Answers

Red blood cell : 110 - 120 days

Brain cell : 5 - 10 mins

Skin cell : 2 - 3 weeks

Heart muscle cell : 50+ years

Fat cell : 10 years average

PLS ANSWER QUICKLY
I will give you a brainest

draw arrows to show the path of the
electricity in this series circuit pls answer quickly as possible ​

Answers

Answer:

from positive to negative

What are the 4 nitrogen bases in DNA? RNA?

Answers

Answer:

adenine, cytosine, uracil, and guanine.

Answer:

For DNA there is Adenine (A), Thymine (T), Guanine (G), and Cytosine (C)
For RNA there is Adenine (A), Uracil (U), Guanine (G), and Cytosine (C)

Explanation:


If Sara was planning a wedding and wanted to have a sculpture of a heart made of
butter at the reception, describe how Sara could test the temperature range at
which the heart would remain a solid.

Answers

Answer:

check the Ac so ya so ya so ya so ya so ya so ya

Answer:

Butter stored in a refrigerator is a solid. Sara should put a thermometer in the refrigerator for an hour and record this temperature.


Which element has chemical properties that are most
similar to potassium, And why?

Answers

Answer:

Brainliest pls

Explanation:

The components potassium and sodium have comparable substance properties since they have a similar number of valence electrons

A student builds a circuit that has a source of electrical energy, connecting wires, a witch and a load. However, the circuit does not work. Suggest three possible reasons why the circuit does not work.

Answers

Answer:

switch

Explanation:

maybe the switch is not on

Answer:

1.maybe the switch is not on

2.low voltage of the electrical source

3.the connecting wires could be too long

How many moles are in 5.4 x 10-7 grams of silicon dioxide, SiO2 ?

Answers

Answer:

there are [tex]\sf 9*10^{-9}[/tex]  moles in grams [tex]\sf 5.4 * 10^{-9}[/tex] of silicon dioxide.

Explanation:

[tex]\boxed { \boxed{ \sf moles = \sf{\frac{mass}{Mr}} }}[/tex]

we should know that:

[tex]\sf molar \ mass \ of \ SiO2 = 60[/tex][tex]\sf given \ mass \ of \ SiO2 = 5.4 * 10^{-7}[/tex]

using the formula:

[tex]\sf moles = \frac{mass}{Mr}[/tex]

[tex]\sf moles = \frac{5.4*10^{-7}}{60}[/tex]

[tex]\sf moles = 9*10^{-9}[/tex]

8. Acid rain has a pH of 4. Is acid
rain a stronger or weaker acids?




Answers

Answer:

Acid rain is a stronger acid.

General Formulas and Concepts:
Acids/Bases

pH Scale

Explanation:

We are given that acid rain has a pH = 4.

We know that the lower the pH number, the more acidic it becomes. The higher the pH number, the more basic is becomes.

Therefore, the lower the pH scale number, the stronger the acid. Typically, the pH scale generally ranges from pH 1 to pH 14.

Comparing pH of 4 in the scale from 1 - 14, it would be a strong acid.

Topic: AP Chemistry

Unit: Acids/Bases

How many moles of carbon dioxide can be formed by the decomposition of 5.0 moles of aluminium carbonate

Answers

Answer:

30 moles of CO₂

Explanation:

PREDICT THE PRODUCTS AND BALANCE THE EQUATION
FeCl2 (aq)+K2NO3 (aq)

Answers

Answer:

see below

Explanation:

Swap cations and anions

K2NO3 is not balanced, it is either 2KNO3 or KNO3 and only 2KNO3 works in this case

FeCl2 (aq)+KNO3 (aq) → Fe(NO3)2 (aq) + 2KCL (aq)

What are two ways you can tell that steel wool went into a chemical reaction​

Answers

Answer:

Two ways that I can tell is that rusting is a chemical reaction​ because it is not caused by any physical force or trauma it's oxidation and it changes colors from heat and heat is one of the main factors for a chemical reaction​.

Explanation:

Answer:

Explanation:

Touching the battery to steel wool sends a current through the thin wire, and it heats up a lot (to about 700 degrees C). These temperatures cause the iron to react with the oxygen (O2) in the air and creates iron oxide (FeO2).

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A park has a circular swimming pool. The diameter of the pool is 19 feet. What is the distance traveled if you swim around the edge of the pool once? Round your answer to the nearest hundredth. At a football stadium, 20% of the fans in attendance were teenagers. If there were 180teenagels at the football stadium, what was the total number of people at thestadium? Gabby walks 12 blocks east from school and then 16 blocks south. Each block is 50 yards. How far is Gabby from school in yards? Can yall give me some critique on this? 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(All circumferences are approximate.)circumference: 34.54 unitscircumference: 59,66 unitscircumference: 23.236 unitscircumference: 26.376 unitscircumference: 13.188 unitscircumference: 29,83 unitsradius: 4.2 unitsdiameter: 7.4 unitsdiameter: 11 units can someone do this for me? 4.If a = 0.5, b = -6, c= -0.2, and d = 3 evaluate the following.b.d - ba.bc-2acd.dC.ab2e.dc + af.abd Which steps make up the juridical process in the federal court system Tell me the format of a formal letterBOTH LETTERS (informal too) can someone help me!!!!! 1. Give a short summary of what you read. In other words, what was the story about? Be sure your summary has AT LEAST (three sentences). 2.Based on what you read, how did the story show empowerment of Native people? Give evidence from the story! WASHINGTON'S NFL TEAM DROPS ITS NICKNAME AFTER 87 YEARS A big change just happened in the National Football League. It is called the NFL for short. For nearly 90 years, the Washington football team had used a nickname that was considered offensive to Native Americans, On July 13, the team made an announcement. It will stop using that name. Washington also will change its logo. For many years the team name was criticized. Now. a new name will be chosen. The change comes as many are reflecting about racism in the United States. Statues honoring people with racist beliefs are being tom down. Other monuments are being questioned, too. Team Began A "Thorough Review" Dan Snyder has owned the Washington football team since 1999. He has been a Washington fan since he was young. Snyder once declared he would never change the name. However, several companies recently lined up against the name. FedEx, Nike, Pepsi and Bank of America are a few. Each helps fund the Washington team. Two weeks after, Snyder's team began a "thorough review." Ray Halbritter is an Oneida Indian Nation Representative. He has led the "Change the Mascot" program. He praised the NFL and Snyder for the move. Several Indigenous leaders and groups wrote to NFL Commissioner Roger Goodell in early July. They demanded Washington stop using the name. Some say the old team name is a "dictionary-defined racial slur." Goodell said he supported the review. FedEx officially spoke against the name in July. The company called for a change. Its move was especially important. FedEx leader Frederick Smith owns part of the team. The team's stadium is called FedEx Field. Stadium Section Renamed For Team's First Black Player George Preston Marshall created the team. It began in 1933. Marshall had racist beliefs. He supported segregating or separating Black and white people in public spaces. Segregation was outlawed in 1964. Marshall was the last NFL owner to allow Black players on his team. Recently, Washington made changes. A stadium section had been named after Marshall. They renamed it for Bobby Mitchell. He was the team's first Black player. Crystal Echo Hawk is part of the Native American organization IllumiNative. She and others want all Native American names and images out of sports. The Atlanta Braves is a Major League Baseball team. It uses Native American images. So does the National Hockey League's Chicago Blackhawks. Both have said they have no plans to change. Hopes For A "Broader Discussion" Halbritter noted their names are not considered racial slurs. Still, he hopes for a "broader discussion." He pointed out that Florida State University is called the Seminoles. The university spoke with the Seminole tribe about the name. Sports teams often don't speak with Native American tribes in such situations, says Halbritter. Speaking with Native leaders shows respect, he said. Some Washington fans are upset about the name change. They say it is a tradition they a wanted to keep The team has had just five playoff appearances in 21 years. Ron Rivera is now its head coach. If the team starts winning with the new name, it could help Snyder look good to fans. Complete the table. Will choose brainliest. Which half of the roman empire is the byzantine empire located in/survived in?.