Chemistry High School

Please help me choose the correct statement

Answers

Answer 1

The ball has more mass because it weights more it may be less dense but more weight is being added to it

Related Questions

1. How many moles of Mg are there in 9.20 x 1024 atoms of Mg?

Answers

Answer:

15.28 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{9.20 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 15.282392..[/tex]

We have the final answer as

15.28 moles

Hope this helps you

orange juice being made from fresh oranges
O a. physical property
Ob. physical change
O c. chemical property
O d. chemical change

Answers

I believe it is a physical change

It’s b. Physical change

Careless work, fraud, biases, confirmation bias, are all examples of ________________.
Question 10 options:

poor science

good science

higher level science

popular science

Answers

Answer:

Poor Science

Explanation:

I took the quiz also just think that doesn't seem like a good, higher level scientist, or popular one, SO THERE YOU GUYS GO!!!

Answer:

poor science

Explanation:

When a chemical reaction takes place, the number of atorns of each element in the reactants
nunber of atorms of each element in the products.
will be dferent from
must be equal to

Answers

Answer:

The law of conservation of matter says that matter cannot be created or destroyed. In chemical equations, the number of atoms of each element in the reactants must be the same as the number of atoms of each element in the products

Explanation:

Why is it important to pasteurize certain liquids?

Answers

Answer:

Pasteurization involves heating liquids at high temperatures for short amounts of time, it can make it better if you wanted hot cocoa but bad for milk

Explanation:

Answer:

Pasteurization kills harmful microbes in milk without affecting the taste or nutritional value

Explanation:

Which of the following chemical formulas contains the most molecules?
A. 5CO
B. 3H2O
C. 2Fe2O3
D. 4C3H8

Answers

C. 2Fe2O3 would be the correct answer!

the structural formula for CF4 is

Answers

Answer:

PubChem CID 6393

Structure

Find Similar Structures

Chemical Safety

Compressed Gas

Laboratory Chemical Safety Summary (LCSS) Datasheet

Molecular Formula CF4

Molecular Weight

88.004 g/mol

Explanation:

so i found this online and i hope it helps

carbon tetra fluoride. tetrefluoromethane is a colorless nonflammable gas

i couldn’t find the structural formula but this is the compound for CF4

Tony sets up an experiment inside his classroom. He spaces 5 plants at equal distances along a straight line, with the first plant directly in front of a window and the last plant 10 meters (m) away from the window. He gives them equal access to air and water and then monitors the amount of gas each plant releases.
Which gas is Tony monitoring and what trend is he most likely to see in the data he collects?

He is monitoring oxygen. The amount of gas released should be highest for the plant in the middle and lowest for the plants at the ends.

He is monitoring carbon dioxide. The amount of gas released should be highest for the plant in the middle and lowest for the plants at the ends.

He is monitoring oxygen. The amount of gas released should be highest for the plant closest to the window and lowest for the plant farthest away from the window.

He is monitoring carbon dioxide. The amount of gas released should be highest for the plant closest to the window and lowest for the plant farthest away from the window.

Answers

Answer:

I believe the answer is

"He is monitoring oxygen. The amount of gas released should be highest for the plant closest to the window and lowest for the plant farthest away from the window."

Explanation:

I may be wrong but thats my guess it seems the most accurate

Which of the following may indicate that a chemical reaction has occurred?
a. release of energy as light
b. a color change
C. gas bubble formation
d. All of the above

Answers

Answer:

D, all of the above

Explanation:

What caused space technology to improve so quickly?

Answers

Answer:

“spinoff”

Explanation:

Here is just a sampling of the many “spinoff” technologies, as NASA refers to them, resulting from space research and development that we now use in everyday life.

What is the mass of hydrogen produced when 8.0 g of sodium
reacts with an excess of water to produce hydrogen and sodium
hydroxide? The equation is given.
2 Na + 2 H2O → 2NaOH + H2

Answers

Answer:

Mass = 0.35 g

Explanation:

Given data:

Mass of sodium = 8.0 g

Mass of hydrogen produced = ?

Solution:

Chemical equation:

2Na + 2H₂O → 2NaOH + H₂

Number of moles of sodium:

Number of moles = mass/molar mass

Number of moles = 8.0 g/ 23 g/mol

Number of moles = 0.35 mol

now we will compare the moles of sodium and hydrogen

Na : H₂

2 : 1

0.35 : 1/2×0.35 = 0.175 mol

Mass of hydrogen:

Mass = number of moles × molar mass

Mass = 0.175 mol × 2 g/mol

Mass = 0.35 g

Hello Hi so um... I don't know what to say so um... yeah MOLLOC WAS HERE!!!!!!!!!!!!!!!!

Answers

Answer:

hi nice to meet you, just be your self and ask your questions, its all good we are nice people

Explanation:

have a great day, please mark as brainliest please

Hello! Be ur self, ask questions and ask questions. Okibye

HUGE REWARD - 30 POINTS AND BRAINLY!

What is the atomic number of this element?

Answers

Answer:

Explanation:

ATOMIC NUMBER IS NUMBER OF PROTONS

PROTONS have positive charge

Answer:

Explanation:

sorry i accidentally put a 2 first

How many grams are in the quantity: 2.5 mol of NaCl

Answers

Answer: The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles NaCl, or 58.44277 grams.

Explanation:

Ed made pancakes from batter, freshly squeezed orange juice, fried eggs, and a strawberry fruit salad. Identify the chemical changes that occur to the food items during breakfast preparation

Answers

Answer:

Warming the batter and frying the eggs.

Explanation:

This is a chemical change as the products have very different property as compared to reactant not only physically but also chemically. Therefore, the reaction that is associated with cooking is combustion reaction.

What is chemical change?

Chemical change is a reaction in which breaking and forming of new bonds take place. One molecule completely converted to totally different molecule. The number of atoms remains same

One famous example of chemical change is the rusting of iron. The color, odor and arrangements of atoms in products are very much different from reactant. Chemical change are mostly irreversible in nature.

Cooking is a chemical change not a physical change. During cooking the reaction that is associated is combustion reaction as the by product is carbon dioxide and water.

Therefore, the reaction that is associated with cooking is combustion reaction.

Learn more about the chemical change, here:

https://brainly.com/question/16279122

#SPJ2

HELP IN 8TH GRADE ADV SCIENCE

Answers

Answer:

protons: 36

neutrons: 48

electrons: 36

Apple juice can be classified as which of the following?
O A compound
An Element
O A mixture
O A pure substance

Answers

Answer:

mixture

Explanation:

Answer:

Mixture

Explanation:

The properties of matter depend on the types of atoms a substance is made of.
true of false?

Answers

false pls mark brainliest

true 100% i just had a quiz on this.

The potential difference between the top and bottom of a D cell battery is

Answers

Answer:

Does it have a picture?

Explanation:

The potential difference between the top and bottom of a D cell battery is derived by the use of a voltmeter between the +ve and -ve poles.

What is the Potential difference?

The potential difference is simply defined as two points that reflect the energy released in transferring a unit quantity of electricity from one spot to the other.

In conclusion, Potential difference is also known as the voltage across two points in a circuit.

Answers

Answer:

Non-zero digits are always significant.

Any zeros between two significant digits are significant.

A final zero or trailing zeros in the decimal portion ONLY are significant. If a number ends in zeros to the right of the decimal point, those zeros are significant.

Explanation:

1.138 has 4 significant figures, which are 1, 1, 3 and 8. The numbers after the decimal point are decimals and are significant figures.

Airplanes typically fly at an altitude of about 10,000 meters. At this altitude the atmospheric pressure is significantly less than it is at sea-level. Because of this, airplane cabins must be pressurized so that the people on board can continue to get enough oxygen. If a typical 747 has a volume of 28,000 m3 and is filled with air at 101.3 kPa on the ground, what is the new volume of air inside when the cabin is pressurized to 75 kPa once it is in flight?

Answers

Answer:

37,818.67 m3

Explanation:

The pressure a gas will exert on a container is inversely proportional to the volume of the gas. According to Boyle's law, at a constant temperature, the pressure of a gas is inversely proportional to its volume. The law can be mathematically represented thus:

P1V1 = P2V2

In this case, P1 = 101.3 kPa, V1 = 28,000 m3, P2 = 75 kPa, V2 = ?

V2 = P1V1/P2

= 101.3 x 28,000/75

= 37,818.67 m3

Hence, the new volume of the air inside the cabin after pressurizing would be 37,818.67 m3.

* The cost of table salt and table sugar is Rs 15 per kg.
and Rs 69 per kg respectively calculate their cost per mole?

Answers

Cost per mole

Table salt : Rs 0.878

Table sugar : Rs 23.63

Further explanation

Given

Cost table salt (NaCl) = 15/kg

Cost table sugar(sucrose-C12H22O11) = 69/kg

Required

cost per mole

Solution

mol of 1 kg Table salt(NaCl ,MW= 58.5 g/mol) :

[tex]\tt mol=\dfrac{1000~g}{58.5}=17.09~mol=Rs~15\rightarrow 1~mol=Rs~0.878[/tex]

mol of 1 kg Table sugar(C12H22O11 ,MW= 342 g/mol) :

[tex]\tt mol=\dfrac{1000}{342}=2.92~mol=Rs~69\rightarrow 1~mol=Rs~23.63[/tex]

How did humans create cow breeds that survive well in cold weather?
Select one:
O
They identified cows that did well in cold weather and mated them.
O
They mated cows with sheep that had very thick wool.
O
They mated cows with caribou that tolerated the cold well.
O
They identified cows that did well in hot weather and mated them

Answers

Answer: They identified cows that did well in cold weather and mated them. This is known as selective breeding. All the other answers either cannot work as cross-species breeds generally don't work, or they target cows that survive well in hot weather.

How are light bulbs made

Answers

Answer:

Explanation: The air inside the bulb is taken out and replaced with a gaseous mixture of argon and nitrogen which help ensure a longer-life for the filament. The bulb will be tested to make sure they're up to the job.

HELP!! I WILL GIVE BRAINLIEST

Earth's magnetic reversals are recorded in

A. the asthenosphere

B. sea-floor rock

C. deep-ocean trenches

D. the mantle

Answers

Its C i think i could be wrong

Is radium usually considered as part of the alkaline earth category in terms of chemistry?

Answers

Explanation:

Radium (atomic number 88) has similar properties to barium and is also in the Group 2 category. However, radium is a radioactive element and is generally under the category of radioisotopes in addition to being an alkaline earth metal, because it is not a stable element.

What is the value for AG at 100 Kif AH = 27 kJ/mol and AS = 0.09 kJ/(mol-K)?
A. AG = 2700 kJ/mol
B. AG = -36 kJ/mol
C. AG = 0 kJ/mol
D. AG = 18 kJ/mol

Answers

Answer:

ΔG = 18KJ/mol

Explanation:

Given data:

ΔS = 0.09 Kj/mol.K

ΔH = 27 KJ/mol

Temperature = 100 K

ΔG = ?

Solution:

Formula:

ΔG = ΔH - TΔS

ΔH = enthalpy

ΔS = entropy

by putting values,

ΔG = 27 KJ/mol - 100K(0.09 Kj/mol.K)

ΔG = 27 KJ/mol - 9 KJ/mol

ΔG = 18KJ/mol

The most abundant element is
A. Sulfur
B. Oxygen
C. Silicon
D. Carbon
E. hydrogen

Answers

Answer:

E. hydrogen

Explanation:

Hydrogen is the most abundant element in the Universe.

Answer:

Its E. hydrogen

Explanation:

The __________ system is responsible for bringing oxygen into the lungs and releasing carbon dioxide from the body

Answers

ʕ•ᴥ•ʔ ▼・ᴥ・▼ I think the answer is respiratory system

Answer:￣ﾉﾞ(｡･∀･)ﾉﾞo(*￣▽￣*)ブ(*￣3￣)╭o(*￣▽￣*)ブ(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭(*￣3￣)╭•)>⌐)↖↗↘↙↜↚↯↟↝↖↔↕↙↘↙↘↘↞↴↯↚↨⇌⇋⇆⇉⇑↶⇋⇋↳¾⁷¼¼⁶⁴⁷⁰⁰⁰⁹⅕⅘⅓⅕⅓⅕⨊⨡⨔⨩⨦⨶⨼⨿⨷⨷⨻⨼⨹₴ The answer is resperitory

Explanation:

A scientist observes plant roots growing through the mountain side. This is evidence for which type of natural process?

Physical weathering
Chemical Weathering
Erosion
Deposition

Answers

Answer:

I think chemical Weathering

Answer:

Deposition is the answer

Explanation:

Other Questions

In the opening pages of Ender's Game, Ender observes that "Sometimes lies were more dependable than the truth? What does he mean by that? In the opening pages of Ender's Game, Ender observes that "Sometimes lies were more dependable than the truth. Do you think his observation is correct or incorrect? HElp wHat iS iT!?!?!??! Find the answer when you substitute the letters with k = 14 and d = 5 in the equation. -5d - 7k. Btw the others for c andC.wandering D. Motionless Which group of people hold the power to vote in a democracy? *O The noblesO The people/citizensO The monarch or tyrantO The church/clergyplease hurry Did the New Deal effectively provide relief to Americans during the Great Depression? Historians and economists still disagree over the answer to this question. Read the four articles provided here to learn more about both sides of the argument. Determine your viewpointon this topic and develop a claim.Write an essay to present an argument that either accepts or rejects the claim that the New Deal effectively provided relief during theGreat Depression. Your argument should include a clear claim, logical reasons, and accurate data and other relevant evidence. It shouldalso include, and rebut, a counterclaim.WILL MARK BRAINLIEST All living things must contain genetic material. Which of the following nonliving things also has this characteristic? A. Fire B. Cell phone C. Virus D. Organic phosphates This law states that in an undisturbed rock sequenceThe oldest layers are on the bottom and each successive layer is younger than the one underneath it To make a window wider, you would move the pointer until it changes to the horizontal resize shape and then Find the slope of the line through each pair of points.1. (19, -16), (-7, -15)2. (-4, 7), (-6, -4)3. (20, 8), (9, 16) A veterinarian prescribes Benadryl for a dog with allergies. The recommended dosage is 3 mg per kg per day to be given in two doses. If your golden retriever weighs 67 lbs., how much Benadryl should he get in each dose? Round to nearest milligram. f(x) = x^2 + 2x 4f(3) = ? Last month, Jennifer earned $143 for her after-school job. If she was paid $6.50 per hour, how many hours did Jennifer work?A.18 hours B.20 hours C.22 hours D. 24 hours Select the adjective in the sentence.The chubby baby clapped his hands excitedly. 6. Which statement about energy is true? A. Energy is a wave. B. Energy cannot travel through a vacuum. C. Energy has the ability to cause motion. D. Energy cannot change form. A story's protagonist approaches a doorway where the antagonist is secretly waiting to grab her. The reader knows the antagonist is waiting behind the door, but the protagonist does not. This is an example of irony es ) Q: A: A) dramatic B) literal C) situational D) verbal A billiard ball moving at 5 m/s strikes another ball which is initially at rest. After the collision, the first ball moves at a velocity of 4.35 m/s at an angle of 30o below its original motion. Find the velocity and angle of the second ball after the collision. Assume that the collision is perfectly elastic. HELP DUE BY THE 2ND AT 5:00PMWhat do you think the theme is? How do you know? What is your evidence? I think the theme is ________ because the text says ____________.STORY HERE can someone please help me out its due very soon, Page 1How c has currency help in economic activities?Write in short.