if your not sure pls don’t answer.this is science btw.

Answer:

Its D. All of the above

Answer:

Ca2B6O11·5H2O

Explanation:

colemanite, borate mineral, hydrated calcium borate (Ca2B6O11·5H2O) that was the principal source of borax until the 1930s.

Answer:

Thus, when 2.5 mol of oxygen reacted with hydrogen, 2 * 2.5 mol = 5 so its A

The number of atomic orbitals is the same for all elements in a period. Every element in the top row (the first period), for example, has only one orbital for its electrons. The electrons of all the elements in the second row (second period) have two orbitals. Every row adds an orbital as you progress down the table.

I hope this helps <3

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Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass of gold bar = 34.5 g

volume = 17 mL

We have

[tex]density = \frac{34.5}{17} \\ = 2.02941176...[/tex]

We have the final answer as

Hope this helps you

Answer:

Hello I didi this quiz and i got 100% and the answer is (a) hope this helps <3

Explanation:

Answer:

water

Explanation:

you can go longer without food than you can with water.

Answer: who is post malone

Explanation:

Answer:

Select the letter of the correct answer.

A vertical skateboard ramp is 12.5 feet high. The staircase leading to the top of the ramp is 15 feet long. How far away from the bottom of the ramp is the bottom of the staircase? Round your answer to the nearest tenth of a foot.

Press enter to interact with the item, and press tab button or down arrow until reaching the Submit button once the item is selected

A8.3 feet

B8.4 feet

C8.0 feet

D8.2 feet

Explanation:

so can someone help me please i only have 15 mins left !!!!!

Answer:

As a result, to prepare 250 ml of 0.20M NaCl, take 50 ml of 1.0M NaCl solution and add 200 ml of water.

Explanation:

Answer:

The pelvic bones of whales are one of the classic examples of a vestigial structure. In most animals, the pelvic bones are needed to be able to move the lower or rear set of limbs for the purpose of locomotion.

Answer:

As the sun's angle changes, (because of the rotation of the earth) the sun slowly begins to shine more or less sunshine slowly. When sunsets and sunrises occur, the color of the sky changes because the sunshine is starting to fade out or in.

I put it in my own words so you don't have to worry about plagiarism :)

Answer:

Compound

Explanation:

Compounds consists of atoms of two or more different elements that are chemically bonded together.

Answer:

Your answer I believe will be C. To determine the probability that an offspring would have a specific trait.

Explanation:

[tex]19.87mol \times \frac{22.4lit}{1mol} = 445.088 lit[/tex]

Answer:

When coal is used to produce electricity , the heat energy is transformed into mechanical energy .

Explanation:

   Coal is one of the United States' most affordable and largest domestically produced energy sources. It is used to generate a significant quantity of our electricity, about 37%. Historically, producing power from coal has been correlated with a wide range of environmental impacts.

Water is converted into steam at a coal-fired steam plant, much like a nuclear plant, which in turn powers turbine generators to generate electricity. Here is how it operates in the process.

Without any pollution, the cooling water is returned to its source and the steam water is returned to the boiler to repeat the cycle.

Hence, the heat energy is transformed to the mechanical energy ,when coal is used to produce electricity.

Answer:

The number is known as 3 carbon molecules followed by 2 oxygen molecules. This is because on the periodic table, the letter C means carbon, and O2 means oxygen.

Answer:

Explanation:

Answer to Armando is an artist who sells prints of his original paintings. ... This problem has been solved! ... Armando wants to create a function P(x). to model his total profit where x is the number of paintings sold

Answer: There is gas produced.

Explanation:

After waking up one morning the smell of bacon was noticed. This was made possible due to the gas produce from the chemical reaction taking place during the process of making the bacon.

This gases are produced from the cooking of the bacon ( meat ), on the fire using cooking oil and all other ingredients.

Answer:

The gravitational pull of the moon is probably changing how our atmosphere is.

Explanation:

Answer:

Brain

Explanation:

It's obviously the brain everyone knows that. Its not gonna be the heart or the lungs is it. The brain is most active at night while the body is sleeping xoxo. Also it links with how we see things and the nerve system but i aint got time to go into detail lots of love guvan

Brain is the organ system coordinates the action of the body.

Organ system is defined as a biological system made up of a collection of organs that collaborate to carry out one or more functions. The function of organ system are helps the body filter out dangerous metabolites, alcohol, narcotics, and other hazardous substances. Managing the amounts of several vital substances in the blood, such as amino acids. Creating bile acid. blood is sanitized by some microorganisms.

Brain is defined as a remarkable three-pound organ that regulates every bodily process, processes information from the outside world, and embodies the spirit and mind. The brain is arguably the most important organ in the human body. It regulates and coordinates every aspect of who we are as people, including our capacity for thought and feeling, as well as our capacity for memories and emotions.

Thus, brain is the organ system coordinates the action of the body.

To learn more about organ system, refer to the link below:

https://brainly.com/question/13278945

#SPJ6

pasagot nga po please need lang po talaga.

The series along which the bond angle is increasing is: C. H2O NH3 CH4.

Bond angle refers to the geometric angle that actually exists between angles that are adjacent to each other. It is also known to be the angle that is formed by three contiguous atoms.

We can see that as we move from H2O to NH3 then to CH4, the bond angle increases.

Learn more about bond angle on https://brainly.com/question/25425872

Answer:

study of the relations between heat, work, temperature, and energy

Explanation:

Thermodynamics is the study of the relations between heat, work, temperature, and energy. The laws of thermodynamics describe how the energy in a system changes and whether the system can perform useful work on its surroundings.

Answer:

[tex]\huge\boxed{\sf 186.59\ L}[/tex]

Explanation:

Given that:

No. of moles = 8.33 mol

At STP, 1 mol. of all gases has a molar value of 22.4 dm³/mol

So,

Volume of 8.33 mol of N₂ gas:

= no. of moles x molar value

= 8.33 x 22.4

= 186.59 dm³

Since 1 dm³ = 1 L

So,

Volume = 186.59 L

[tex]\rule[225]{225}{2}[/tex]

Answer:

Decomposition reaction

Explanation:

2Ag₂O => 4Ag + O₂

As silver oxide is split into silver metal and oxygen gas, it can be classified as decomposition reaction.