Chemistry High School

How many moles of bromine are needed

Answers

Answer 1

Answer:

8.0 moles

Explanation:

Related Questions

b) Why is aluminium extracted using electrolysis and not carbon?

Answers

The extraction is done by electrolysis. The ions in the aluminium oxide must be free to move so that electricity can pass through it. Aluminium oxide has a very high melting point (over 2000°C) so it would be expensive to melt it. The use of cryolite reduces some of the energy costs involved in extracting aluminium.

Answer:

Aluminum is more reactive than carbon so it must be extracted from its compounds using electrolysis.

Explanation:

Even though aluminum is more abundant than iron in the Earth's crust, aluminum is more expensive than iron. This is mainly because of the large amounts of electrical energy used in the extraction process.

what happens when u mix blood and water

Answers

Answer:

Blood and water

Explanation:

the substance that can not be further decomposed by ordinary chemical means is
A.water
B.gold
C.sugar
D.air

Answers

It’s between c and a

What other substance (besides salt) could you sprinkle over ice to affect how fast it melts? Describe how you would test the substance's impact on the melting time of ice. Predict the results of such a test.

Answers

Answer:

See explanation

Explanation:

Salt makes ice to melt faster than it usual. Sugar is another substance that influences the melting time of ice.

If i have a sample of pure ice and another sample of ice treated with sugar. I have to maintain the both initially at 0 degrees temperature and have a stop clock to measure the melting time.

I will ultimately notice that the sample of ice treated with sugar will melt faster than the pure sample of ice due to the presence of an impurity.

GUYS QUICK HELP!
is a soda pop bottle a invention or an innovation?

Answers

Answer:

Invention

Explanation:

!Hope This Helps!

A soda pop bottle is an invention.

You probably use the term heat many times a day. As an example, when you cook dinner, you heat your dinner on a hot stove. When you place a piece of cool metal in the sun, it is heated by the sun’s energy. Why is heat the correct term to use in these examples?
A. They show that when objects are touching, they are the same temperature.
B. They show that heat flows from something warmer to something cooler.
C. They indicate that heat is created to raise the temperature of something.
D. They indicate that the kinetic energy of the particles decreases when something is heated.

Answers

Answer:

Explanation:

9. Scientists are studying cellular respiration in a jungle ecosystem that has plants,
animals, and decomposers (which consume dead things). Which group or groups of
organisms in the jungle carry out cellular respiration?
plants
animals and decomposers
all organisms in the jungle
animals.

Answers

Answer:

all organisms in the jungle

Explanation:

Scientists are studying cellular respiration in a jungle ecosystem that has plants, animals and decomposers, so all organisms in the jungle carry out cellular respiration.

What is cellular respiration?

Cellular respiration is a process in which organism use the oxygen molecule for the conversion of their food materials to get the chemical energy by the product of water and carbon dioxide.

This respiration process is done by all living organism like plants, animals, insects, bacteria, etc. to get energy for the other cellular functions. So, in the ecosystem of jungle plants, animals and decomposers all will perform cellular respiration.

Hence, option (c) is correct i.e. all organisms in the jungle.

To know more about cellular respiration, visit the below link:

https://brainly.com/question/25921566

A nucleus emits an alpha particle. What happens to the mass
number and the atomic number of that nucleus?

Answers

Answer:

the mass number decreases by 4 and the atomic number decreases by 2

If you roll a bowling ball and a marble at the same
speed, which one has more Kinetic Energy?

Answers

Answer:

The marble

Explanation:

Even though they both have kinetic energy, the marble has more since the weight of the bowling ball is heavier, leaving it to stop faster than the marble itself.

How does energy play a role in different rock types forming? I had this question another time in my test and it's asking the same thing again.

Answers

Answer:

Yes

Explanation:

Yes, there are many energy forces that directly affect the formation of rocks and other substances. The Sun itself provides both energies in the form of heat/radiation and magnetic energy. Heat can get so intense when combined with pressure from being so far underground that it causes rocks to melt and become magma, which combines with other minerals and forms new types of rocks when they cool in the future. Magnetic energy helps push and pull the waves and wind on Earth which ultimately break down rocks into sand over the years.

How many moles are there in 17.6g NaOH?

Answers

Answer:

The answer is 39.99711. We assume you are converting between grams NaOH and mole. You can view more details on each measurement unit: molecular weight of NaOH or mol This compound is also known as Sodium Hydroxide.

Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 0.44moles are there in 17.6g NaOH.

What is mole?

The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. The stoichiometry represents the number of moles.

Mathematically,

number of moles of NaOH =given mass of NaOH÷ molar mass of NaOH

Molar mass of 1 mole of NaOH= 40 g/mol

mass of NaOH= 17.6g

Substituting all the given values in the above equation, we get

number of moles of NaOH = 17.6g ÷ 40 g/mol

number of moles of NaOH =0.44moles

Therefore, 0.44moles are there in 17.6g NaOH.

To know more about mole, here:

https://brainly.com/question/15209553

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What causes warm air to rise?
a. The fact that it's less dense than cold air.
b. The fact that it weighs more than cold air.
c. The fact that it has higher pressure than cold air.
d. The fact that it's more dense than cold air.

Answers

a. The fact that it's less dense than cold air.

The answer is a because it reverses depending on the temperature

What does c represent in the carbon cycle diagram?

Answers

Answer:

carbon

Explanation:

I'm pretty sure if not

Answer:

The adjacent diagram shows the carbon cycle with the mass of carbon, in gigatons of carbon (Gt C), in each sink and for each process, if known. The amount of carbon being exchanged in each process determines whether the specific sink is growing or shrinking.

A car accelerates from 20 m/s to 40 m/s in 4 seconds. What is the car’s acceleration?

Answers

Answer:

40 - 20 = 20

20/4 = 5m/s

The difference in velocity divided by the rate = acceleration.

What’s Neon family number? And period?

Answers

Answer:

18 and Period 2

Explanation:

Neon (Ne), chemical element, inert gas of Group 18

Neons period on the periodic table is period 2.

Someone help please!

Answers

Answer:

Explanation:

during a heating or cooling process, how are changes in enthalpy and temperature related?

Answers

Answer:

answer this and ill answer that

Explanation:

during a heating or cooling process, how are changes in enthalpy and temperature related?

Which have a mass of 0 amu?

A. Protons
B. Neutrons
C. Electrons
D. Protons and neutrons
E. Protons and electrons
F. Neutrons and electrons

I give Brainliest!

Answers

Answer:

Explanation:

Answer:

C. electrons. They also have a charge of -1

Why does heating an object increases its thermal energy?

Answers

Answer:

the average kinetic energy of its particles increases. When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object increases as its temperature increases.

All objects contain internal energy. Some of this is due to the movement of the particles in the object. When an object is heated, its particles move more vigorously and its internal energy increases.

Home can use ____to distribute warm air from a sunroom

Answers

Answer:

Solarpannels? I honestly don't know I'm just trying to be helpful.

How is the Periodic Table helpful to scientists?

Answers

Answer:

Because it helps predict the types of chemical reactions that a particular element is likely to participate in by telling each element's atomic number and usually its atomic weight

Explanation:

the table is useful for modern students and scientists because it helps predict the types of chemical reactions that a particular element is likely to participate in. ... The table tells each element's atomic number and usually its atomic weight. The typical charge of an element is indicated by its group.

What is the mass of 7.5 x 10^24 molecules of NaCl?

Answers

Answer:

Molar mass of NaCl = 58.44277 g/mol

This compound is also known as Sodium Chloride.

Convert grams NaCl to moles or moles NaCl to grams

Molecular weight calculation:

22.98977 + 35.453

Explanation:

please help with both of these lol

Answers

Answer: 1. Unbalanced

2. Atoms cannot be created or destroyed only rearranged

Explanation:

2. The air pressure inside a submarine is 0.56 atm. What would be the pressure in
mmHg?

Answers

The answer would be 425.599 because 1 ATM is 760 mmHg.

23. Which element is most likely to be malleable?
a. Bromine b. Radon c. Nickel d. Carbon

Answers

It’s c.nickel because it’s a transition metal

3
Question 6 (2 points)
An increase in the level of carbon dioxide in the atmosphere would result in:

Answers

Answer:

Air pollution

Explanation:

Carbon(IV)oxide is sometimes harmful to man but good for plant in other to manufacture their food

march 10
march 3
february 16
february 22

Answers

your answer will be March 3

March 3rd for sure!
Good luck

What causes Earth’s major wind patterns?

Question 1 options:

Radiant energy from the sun strikes Earth unevenly.

The density of ocean water changed wind patterns

The latitudes of different areas

The Earth is spinning

Answers

Answer:

Explanation:

The sun unevenly hits the Earth, causing wind to form and move around the poles; never constant.

Answer:

A is correct i just took the quiz and got it right

Explanation:

In the ATP cycle, a phosphate group is cut off of

A. ATP to form ADP, absorbing energy.
B. ATP to form ADP, releasing energy.
C. ADP to form ATP, absorbing energy.
D. ADP to form ATP, releasing energy.

Answers

B. ATP to from ATP, Releasing energy

Answer:

B) ATP to form ADP, releasing energy.

Which phase of matter will take the shape of its container?

Answers

Answer:

Liquid

Explanation:

All liquids take the shape of the container

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