CHEMISTRY HIGH SCHOOL

1. Ozone in Earth’s atmosphere is important because itA)absorbs harmful pollution.

B)absorbs harmful radiation.

C)helps clouds form.

D)causes rain to fall.

2.

A. a
B. b
C. c
D. d

Answers

Answer 1

Answer:

Answer:

Explanation:

Answer 2

Answer:

Final answer:

Ozone in the Earth's atmosphere is crucial because it absorbs most of the sun's harmful UV radiation, protecting living beings from potential health risks. The correct answer is option B.

Explanation:

The ozone in Earth's atmosphere is primarily important because it absorbs harmful radiation. More specifically, it absorbs the majority of the sun's ultraviolet (UV) radiation, which can cause a variety of health issues like skin cancer and cataracts in humans and can also be detrimental to certain types of plant and marine life. Without the protective layer of ozone, these harmful UV rays would reach Earth's surface in much larger amounts.

Learn more about Ozone here:

brainly.com/question/31987927

#SPJ6

Related Questions

Is the following sentence true or false? The lower the ionization energy, the easier it is to remove an electron from an atom. A. True B. False
If 2a=3b and a=6 then b=
Which three factors can affect gas pressure?
PLEASE HELP HURRY (Physical Science)Use Newton’s Law to explain why a bowling ball will slow down and stop when rolled in a flat surface, like a street.
Carbon-14 has a half-life of 5,730 y. How much of a 144g sample of carbon-14 will remain after 1.719x10 ^4 y.

A pain-relieving pill has a mass of 0.005 g. Express the pill’s mass in grams using scientific notation or in milligrams.

Answers

Answer : The mass represented in scientific notation as $5.0* 10^(-3)g$ and the mass in milligram is, 5 mg

Explanation :

Scientific notation : It is the representation of expressing the numbers that are too big or too small and are represented in the decimal form with one digit before the decimal point times 10 raise to the power.

For example :

5000 is written as $5.0* 10^3$

889.9 is written as $8.899* 10^(-2)$

In this examples, 5000 and 889.9 are written in the standard notation and $5.0* 10^3$ and $8.899* 10^(-2)$ are written in the scientific notation.

If the decimal is shifting to right side, the power of 10 is negative and if the decimal is shifting to left side, the power of 10 is positive.

As we are given the 0.005 g in standard notation.

Now converting this into scientific notation, we get:

$\Rightarrow 0.005g=5.0* 10^(-3)g$

As, the decimal point is shifting to right side, thus the power of 10 is negative.

Thus, the mass represented in scientific notation as $5.0* 10^(-3)g$

Now we have to determine the mass in milligram.

The conversion used from gram to kilogram is:

1 gram = 1000 milligram

or,

1 g = 1000 mg

As we are given the mass 0.005 grams.

As, 1 gram mass = 1000 mg

So, 0.005 gram mass = $(1000g)/(1g)* 0.005mg=5mg$

The mass in milligram is, 5 mg

$\boxed{ \ 5.0 * 10^(-3) \ grams \rightarrow 5.0 \ milligrams \ }$

Further explanation

Scientific notation represents the precise way scientists handle exceptionally abundant digits or extremely inadequate numbers in the product of a decimal form of number and powers of ten.

Put differently, such numbers can be rewritten as a simple number multiplied by 10 raised to a certain exponent or power. It is a system for expressing extremely broad or exceedingly narrow digits compactly.

Scientific notation should be in the form of

$\boxed{ \ a * 10^n \ }$

where

$\boxed{ \ 1 \leq a \ < 10 \ }$

The number "a" is called "mantissa" and the exponent "n" the order of magnitude.

The exponent tells about the size of the number.

A positive exponent indicates a number greater than or equal to 1.
A negatifive exponent indicates a number between 0 and 1.

From the key questions asked, we face the standard form of 0.005 grams which will be converted into scientific notation.

$0.005 = (5)/(1,000)$

The coefficient (or mantissa) is 5, which has fulfilled the interval 1 ≤ a < 10.
The denominator consists precisely of three zero digits.

Hence, 0.005 grams is written in scientific notation as $\boxed{ \ 5.0 * 10^(-3) \ grams \ }$

Because 1 milligrams is equal to 10⁻³ grams, then

$5.0 * 10^(-3) \ grams * (1 \ milligrams)/(10^(-3) \ grams)$

Hence, 0,005 grams is 5.0 milligrams.

In science, we frequently must deal with extremely small or incredibly large quantities. For a typical example, one of the recognized limitations of the microwave frequency is 300,000,000 Hz with a photon energy of 0.00000124 eV. They with many zeros can be impractical to work with, so scientists properly implement scientific notation.

The inverse of scientific notation is the standard form. To promptly change scientific notation into standard form, we reverse the process, move the decimal point to the right or left. This expanded form is called the standard form.

$\boxed{ \ 3.0 * 10^(8) \ Hz \ \rightarrow 300,000,000 \ Hz \ or \ 300 \ MHz \ }$

$\boxed{ \ 0.00000124 \ eV \ \rightarrow 1.24 * 10^(-6) \ eV \ or \ 1.24 \ \mu eV \ }$

Learn more

How is 0.00069 written in scientific notation? brainly.com/question/1898080
How to explain 3,482,000,000 in scientific notation brainly.com/question/231855
Convert the number expressed in standard form to scientific notation brainly.com/question/10436883

Keywords: a pain-relieving pill has a mass, 0.005 grams, express, written, in scientific notation, milligrams, expanded form, exponent, base, standard form, mantissa, the order of magnitude, power, decimal, very large, small, figures, abundant digits, inadequate

Stars are formed from interstellar clouds because ofthe Law of Entropy
the Law of Universal Gravitation
the Law of Stellar Evolution
the Law of Propulsion

Answers

The answer is D. Stars are formed from interstellar clouds because of the Law of Universal Gravitation. The interstellar clouds are termed as nebula. When other stars dies a supernova occurs then the gravity from this pushes matter into the clouds until it cannot overcome the gravitational pull and it collapses which heats matter up forming a star.

How did Moseley establish a more accurate periodic table?

Answers

Moseley established a more accurate periodic table by closer determination of atomic numbers. Through the results of his measurements of the wavelengths of the X-ray spectral lines of a number of elements which showed that the ordering of the elements by atomic number.

Answer:

B. by arranging the elements according to atomic number instead of atomic mass

Explanation:

i just took the test

Solute definition chemistry

Answers

The solute is the substance that is being dissolved into the solvent.

Example:

In lemonade, the powder is the solute, and the water is the solvent.

During radioactive decay, atomic nuclei of unstable isotopes: give off nuclear radiation

Answers

If this is a true/false question the answer would be true. Since nuclear reactions involve the nucleus the nuclear radiation would need to be coming from the nucleus since the reaction is not happening anywhere else.

I hope this helps. Let me know in the comments if the question was asking something else or if my answer is unclear.

Answer:

Radioactive decay

Explanation:

What's the balanced equation for cellular respiration?

Answers

Correct answer is:

$C_(6)H_(12)O_6+6O_(2)\Rightarrow 6CO_(2)+6H_(2)O+energy$

But how to get there?

Let's start with simple explanation of what exactly is cellular respiration.

Cellular respiration is a multistage biochemical oxidation process of organic substances when prime product is energy (ATP - adenosine triphosphate) and other are released waste products. Cellular respiration takes place even if other metabolic processes are stopped, but cellular respiration may differ in particular organism groups.Some reactions during whole process of cellular respiration are similar in all types of living organisms.

Cellular respiration is prime indication of declining living processes.Only viruses which are on the edge of living organism and chemical particle are not performing cellular respiration.But to the point :P

In cellular respiration all substrates which are in the cell might be organic, but mostly we are using sugar oxidation - glucose in the presence of oxygen. Chemical formula of sugar looks like this:

$C_(6)H_(12)O_6$

Oxygen is just

$O_2$

so for now we have just part of the equation:

$C_(6)H_(12)O_6+O_(2)\Rightarrow$

But what would be on the right hand side?

It's quite simple, remember equation of full combustion? If we want to burn something we need oxygen like in the equation, so the product of this equation would be carbon dioxide, water and of course energy (ATP).Carbon dioxide formula looks like this:

$CO_(2)$

As a reminder water formula:

$H_(2)O$

Full formula would look like that:

$C_(6)H_(12)O_6+O_(2)\Rightarrow\ CO_(2)+H_(2)O+energy$

But still as you see this equation is unbalanced, after balancing it would like that:

$C_(6)H_(12)O_6+6O_(2)\Rightarrow 6CO_(2)+6H_(2)O+energy$

At the end I would like to explain one more thing. Energy which has been released during this process is part of high-energy connection which might be used to perform chemical reactions in the cell or to move organism for example in muscles. We need to remember that production of ATP is not happening with 100% efficiency and part of this energy is released as heat.

Other Questions

Acid precipitation can be traced back to the burning of fossil fuels. a. True b. False

Why would you add boiling chips/stones to a solution that is to be refluxed? when should you add them?

I NEED HELP!!!!Which group contains elements that are most likely to have similar properties? A. lithium, beryllium, and boronB. nitrogen, arsenic, and antimonyC. potassium, calcium, and galliumD. cesium, platinum, and radon

The proper technique used to obtain a liquid sample using a pipette involves: Group of answer choices your mouth on one end of the pipette to suction the sample. a suction bulb or pipette pump to suction the sample. a funnel on one end of the pipette to add the sample. a small glassware to pour the liquid in one end of the pipette. the vacuum hose on one end of the pipette to suction the sample.