answer quick plssssssssss

Answers

Answer 1

I’m pretty sure it’s 3.14

Related Questions

How do human change the Earth's surface?

Human activities such as overpopulation can change the Earth's surface.
Human activities such as driving cars can change the Earth's surface.
Human activities such as mining and deforestation can change the Earth's surface.
Human activities such as poaching can change the Earth's surface.

Answers

I believe it is C “Human activities such as mining and deforestation can change the Earth’s surface”

Answer:

Human activities such as mining and deforestation can change the Earth’s surface

Explanation:

Why the bond in water molecule os polar covalent bond, while than in chlorine molecule is pure covalent bond? Give reason?

Answers

Explanation:

The unequal sharing of electrons between the atoms and the unsymmetrical shape of the molecule means that a water molecule has two poles - a positive charge on the hydrogen pole (side) and a negative charge on the oxygen pole (side). We say that the water molecule is electrically polar.

(Help would be greatly appreciated, chemistry is not my strong suit) How many moles of NaCl are present in a solution with a molarity of 8.59M and 125mL of a solution?
1. 1.07g
2. 62.7mol
3. 1.07mol
4. 62.7g

Answers

Molarity is a unit of concentration defined as the number of moles of solute (the substance being dissolved) per volume of solution (the solvent in which all the solute is dissolved). Mathematically, molarity is expressed as

[tex]M = \frac{\text{ mol solute}}{\text{ L solution}}[/tex].

In this question, we are given the molarity and the volume of a solution of NaCl. We can use this information to calculate the number of moles of NaCl present in the solution. Rearranging the equation to solve for moles of solute, we multiply the molarity by the volume of the solution (the units for volume must be in liters, so 125 mL is expressed as the equivalent 0.125 L):

[tex](8.59 \text{ M})(0.125 \text{ L}) = 1.07 \text{ moles of NaCl}.[/tex]

The question asks for the number of moles of NaCl in this solution, so number 3 would be correct.

True or false The difference between solids and liquids is that solids have definite shape and volume, while liquids have no define volume

Answers

Answer:

False

Explanation:

Answer:

true! :) hope it helps

True or false, the torch that is carried to the Olympic cauldron to be lit, is ignited by a match

Answers

Answer:

true

Explanation:

A velocity-time graph shows how what changes over time?

Answers

Answer:

A velocity-time graph shows how velocity changes over time. The sprinter's velocity increases for the first 4 seconds of the race, it remains constant for the next 3 seconds, and it decreases during the last 3 seconds after she crosses the finish line.

To investigate the effect of salt water on a cell, a researcher places one cell sample in freshwater and a second cell sample in salt water. After six hours, the researcher observes and sketches the two cells as shown. What change in the cells occurred during the six hours the cells remained undisturbed? A.Osmosis occurred in the salt water cell sample because the water from inside the cell moved out of the cell to a lower concentration, causing the cell to shrink. B.Osmosis occurred in the freshwater cell sample because the water from outside the cell moved into the cell to a higher concentration, causing the cell to grow. C.Osmosis occurred in the salt water cell sample because the salt from outside the cell moved into the cell to a lower concentration, causing the cell to shrink. D.Osmosis occurred in the freshwater cell sample because the salt from inside the cell moved out of the cell to a higher concentration, causing the cell to grow.

Answers

Answer:

MARK ME BRAINLIEST

Explanation:

MARK ME BRAINLIEST

Solid aluminum metal reacts with chlorine gas to produce aluminum chloride crystals. How many grams of
aluminum chloride will be produced if the reaction begins with 135.0 g Al and 75.0 g chlorine gas? Write the balanced equation. Determine the limiting reactant and determine how much excess reactant will be left over. show your work.

Answers

Sort of hard but it is 56.8

56.8g of aluminum chloride will be produced if the reaction begins with 135.0 g Al and 75.0 g chlorine gas.

What is mass?

A body's mass is an inherent quality. Prior to the discovery of a atom or particle physics, it was widely considered to be tied to the amount of matter inside a physical body. It was discovered that, despite having the very same quantity of matter in theory, different atoms and elementary particles have varied masses.

There are various conceptions of mass in contemporary physics that are theoretically different but physically equivalent. The resistance of the body to acceleration in the presence of a net force can be measured experimentally as mass. The gravitational pull an object has on other bodies is also influenced by its mass.

2 Al + 3 Cl[tex]_2[/tex] → 2 Al C l[tex]_3[/tex]

mole of Al = 135.0/ 26=5.19mol

mole of Cl[tex]_2[/tex] = 75.0/ 35 =2.14 mol

mass of aluminum chloride = 56.8g

Limiting reagent = Al

excess reactant = Cl[tex]_2[/tex]

Therefore, 56.8g of aluminum chloride will be produced if the reaction begins with 135.0 g Al and 75.0 g chlorine gas.

To know more about mass, here:

https://brainly.com/question/28704035

#SPJ2

Calculate the number of moles that are in 2.0 L of a 0.75 M solutions of NaCl

Answers

Answer:

1.5

Explanation:

0.75M=Moles/2L

100 grams of liquid iron is put in liquid water when is equilibrium reached

Answers

Answer:

when the water heats up i believe

Explanation:

Call each of your flowers as water employee increase rate of growth

Answers

Okay ...................x

How do you figure out the final temperature or the initial temperature in calorimetry.

Answers

Add the change in temperature to your substance's original temperature to find its final heat. For example, if your water was initially at 24 degrees Celsius, its final temperature would be: 24 + 6, or 30 degrees Celsius.

Sulfuric acid is an important chemical in industrial production of many products. In the “old” days, it was called oil of vitriol. It is commonly dyed brown now to alert people to its hazards because it is hugely corrosive. It is commonly found in car batteries. What is the molarity of 25.9 moles of sulfuric acid dissolved in 4.00 L of solution?

Answers

Answer:

6.475 M

Explanation:

Number of moles = 25.9 moles

Volume = 4.00 L

Molarity = ?

The relationship between the quantities is given as;

Molarity = Number of moles / Volume

Molarity = 25.9 / 4

Molarity = 6.475 M

If Mars’s atmosphere were 100% oxygen, would that make it like Earth’s?
Yes; Earth’s atmosphere is mostly oxygen.
Yes; the amount of oxygen in Earth’s atmosphere changes.
No; Earth’s atmosphere is mostly nitrogen.
No; Earth’s atmosphere is all carbon dioxide.

Answers

The right answer would be “No;Earths atmosphere is mostly nitrogen”
How do I know? I learned it in one of Film Theories videos lol

Name the type of light interaction feeling hotter in a black shirt than a white shirt
1. Reflected
2. Absorbed
3. Transmittied

Answers

It’s absorbed The outer layer of fabric does get hotter because the black color absorbs more heat. And that heat doesn't get transmitted to the skin because of the thick fabric. But thin black clothing transmits that heat to the skin, making a person hotter

Summarize how a dinosaur can become a fossil.

Answers

The dinosaur dies and is washed away in a flood. The body is buried in sediment (mud or sand) and eventually the body is covered. ... Eventually, the fossil skeleton comes to the surface and is discovered.

If more reactants are used in a chemical reaction, more products will be
produced. This is because *
1 point
More reactants have more atoms to react to form more products
More reactants take up the same volume
Too many products can slow down the reaction
More reactants cause the reaction to heat up

Answers

More reactants have more atoms to react to form more products.

7. A strong acid has a pH of
A) 0
B) 6
C) 7
D) 14

Answers

It should be A) 0
because acids are from PH0-PH6 and basics are from PH7-PH14

Hope this helps!
Good luck!

What does a TRAAP test stand for

Answers

Answer:

TIMELINESS, RELEVANCE, AUTHORITY, ACCURACY and PURPOSE.

Explanation:

hope it helps!

Answer: TRAAP stands for Timeliness, Relevance, Authority, Accuracy and Purpose.

Explanation:

Why can more sugar be dissolved in hot water than cold water (more solute be dissolved in hot solvent then cold solvent)

Answers

sugar dissolves faster in hot water than it does in cold water because hot water has more energy than cold water. when water is heated, the molecules gain energy and because of that, move faster. as they move faster, they come in contact with the sugar more often, causing it to dissolve faster.

Which gases in the following list exist as separate atoms: hydrogen, helium, nitrogen, oxygen, neon.

Select one:
a. Hydrogen and helium
b. Helium and nitrogen
c. Helium and neon
d. Oxygen and nitrogen

Answers

helium and neon ( answer C)

The answer is C tell me if I was wrong

What are bacteria? Chapter 7 lesson 2 AYU

Answers

Answer:

a group of unicellular microorganisms

Answer:

bacteria are a type of biological cell,they constitute a large domain of prokaryotic microorganisms,single celled. The cells are all prokaryotic . This means they do not have a nucleus or any other structures which are surrounded by membranes . ... Bacteria also have small, closed-circles of DNA called plasmids present in their cytoplasm

Explanation:

Single-celled organisms need a microscope to be seen...
O True
O False

Answers

Answer:

True

Explanation:

Microscope is an instrument which is used to observe small objects. There are many types of microscope with a different magnitude.

Brainliest to right answer

Answers

Answer:

False

Explanation:

The outer core is a liquid and is made out of nickel and copper

The answer is fake there is magma in the core

How many total atoms are in one molecule of Pb(C2H2O2)2?
A) 9
B) 14
C) 3
D) 15

Answers

, shows that its molecules contain one S atom and two O atoms; calculate its molar mass. molecules, which consist of 6.02 x 1023 S atoms and 2(6.02 x 1023) O atoms.
The answer is C,(3)

Which pH values indicate an acid soil?

Answers

Answer;

They indicate the acidity level. That is, the less pH, the more acidic

Hope it helps :)

What is an equilibrium constant?

A. A constant relating the effects of activation energy and temperature on the reaction rate

B. The value of the rate of the forward and reverse reactions at equilibrium

C. The amount of energy required for the collision of two molecules to result in a reaction

D. The ratio of equilibrium concentrations of products to concentrations of reactants

Answers

Answer:

Explanation:well first you gotta animalize in your brain what you think would happen in this case D would explain what an equilibrium constant is

Answer: D

Explanation:

The ratio of equilibrium concentrations of products to concentrations of reactants

Compare the seasons on Titan to the seasons on Earth.

Answers

Since Titan orbits roughly along Saturn's equatorial plane, and Titan's tilt relative to the sun is about the same as Saturn's, Titan's seasons are on the same schedule as Saturn's—seasons that last more than seven Earth years, and a year that lasts 29 Earth years.

If today is Monday and it is a 1st Quarter moon, what phase will it
be on Thursday?

Answers

Answer:

Wanning gibouss 56%

Explanation:

Waning gibbous ... I’m sadly doing this too it’s difficult but it gets easy

Difference between Solute and solvet

Answers

Answer:

When one substance dissolves into another, a solution is formed. The solute is the substance that is being dissolved, while the solvent is the dissolving medium. Solutions can be formed with many different types and forms of solutes and solvents.

Other Questions

ill give brainliest, just help me please : ) PLEASE HELP ME As polar bears' population decrease, it creeps ever close to extinction This decrease in the population is due to loss of habitat (floating sea ice). This loss of habitat is caused by which of the following?A. oil spills from ocean drill sites B. human cities and houses being built in their habitats C. Global warming D. introduced can toads which are out competing polar bears for food Your final bill at the restaurant is $120 including a 20% tip. What was the cost of the original bill? How can an assertive person help in resolving conflict? Find the total surface area of this cuboid 4cm 2cm 5cm When crops failed during some years in the Medieval period, areas of Europe experienced __________ The ___ is the mostly closely linked with the destruction of worn out cells. how to write an email to teacher because im sick ( we have test this morning but im absent) A pair of Nike's that originally cost $90 are on sale. The sale price is $67.50. What is the discount expressed as percent change? The altitude to the hypotenuse of a right triangle divides the hypotenuse into 15 inches and 30 inch segments. Explain or show how to find the exact length of the altitude including the correct value. Then explain or show how to find the length of each leg including the correct values. Check ALL that contributed to the chaos in the South following the Civil WarQuestion 4 options:no courts, postal service or law enforcementlost generation of white Southern men who had died or were severely injuredmillions of freed black Southernersdesire to forgive and forget those who had not supported slavery Help please answer choices A- Line AB- Line BC- Line CD- Line D President Obama feels strongly about the potential of ordinary people to create change in our system of democracy.True or False which of the following was NOT a provision of the Treaty of versailles?A) New European nations were created B) Germany was not to be published for its role in world war 1 C) som European nations boundaries were redrawn D) Germany had to claim responsibility for starting world war 1 In a chemical reaction*1 pointThe atoms of the reactants unbond, rearrange, and then rebond to form the productsSome atoms disappear while others multiply to form the productsThe atoms of the reactants always stay together to form the productsNew atoms are formed which combine to make the products 12+16q-q and q=2 evaluate Study the political cartoon. Which best describes the tone of this image? aPatriotic bSupportive cDisapproving dBoring Reread the second section of the song. Using textual evidence to support your answer, what can you infer about the journey forward from the "dark past"? If f(x) = x + 2x - 3, what is the value of f(1 + 2)? Q6.A doctor's surgery provides medical care for people in the local area. The surgery uses InformationTechnology to collect, store and process patient data.Usernames and passwords are used to restrict user access to patient data.Explain two other ways the surgery can restrict user access.