CHEMISTRY HIGH SCHOOL

Oversteepened slopes often lead to mass movements becauseA. the angle of their slope is between 50 and 60 degrees.
B. plants cannot grow on them.
C. the angle of their slope is less than 50 degrees.
D. the angle of their slope is greater than 40 degrees.

Answers

Answer 1
Answer:

The right answer is D.

The slopes are differentiated by the following criteria:

*The inclination;

*The orientation;

*The shape of the slope.

The slope can be measured by degrees or percentages. In the mountains, it is necessary to measure the inclination of a slope by degrees and not by percentages of inclination.

to make the conversion it is necessary to consider that a slope of 45 ° equals a slope of 100%.
Answer 2
Answer: D. the angle of their slope is greater than 40 degrees.

Oversteepened slopes often lead to mass movements because the angle of their slope is greater than 40 degrees.


NOT:
A. the angle of their slope is between 50 and 60 degrees. 
B. plants cannot grow on them. 
C. the angle of their slope is less than 50 degrees. 

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A substance that is present in a reaction but not used up in the reaction is called a _____.

What are synonyms for the word control?

Answers

Answer:

Rule, oversee, discipline

Explanation:

hope it helped!
Thesaurus.com is great for answers like this but a few common ones are power, command, authority, jurisdiction, and sway

The root word gastro- means:
A. Stomach
B. Cook
C. Organ
D. Food

Answers

Answer:

The correct answer is A. Stomach

Explanation:

The prefix gastro- is derived from the Greek word gastrós or gaster wich means stomach, the organ responsible for digestion of food. The most common examples are:

- Gastrointestinal: related to stomach and intestines

- Gastritis: inflammation of the stomach

- Gastroenteritis: inflammation of both stomach and intestines

A combining form with the meaning "stomach," is often used to create compound words, such as gastrology. Here the root word gastro means Stomach. The correct option is A.

The stomach is a muscular bag-like organ that is located on the left side of the upper abdomen. The esophageal sphincter, a valve, is used by the oesophagus to transfer food to the stomach. Acid and digestive enzymes are produced in the stomach to aid in meal digestion.

Storing and digesting the food and liquid consumed during meals is the stomach's main job. In order to aid in the digestion of food and other external items like germs, it creates hydrochloric acid and enzymes.

Thus the correct option is A.

To know more about stomach, visit;

brainly.com/question/2288474

#SPJ6

Which polyatomic ion has a charge of 3-?

Answers

Most of the common inorganic polyatomic ions have negative charges. This means the ion has more electrons than the neutral atoms that are in the ion. A polyatomic ion like phosphate, PO43- has three extra electrons beyond the electrons on the P and O atoms. Got this off google sorry if it doesn't help you :(

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

  1. How is 0.00069 written in scientific notation? brainly.com/question/1898080
  2. How to explain 3,482,000,000 in scientific notation brainly.com/question/231855
  3. 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

The solute will dissolve quicker if the solute is more?A. shaken.
B. saturated.
C. cooled.
D. settled.

Answers

Answer:

A) Shaken is the correct answer

Explanation:

The other three don't fit in with the solution if you think about it. When you shake something with lemonade crystals (Like a lemonade flavor packet in poured in a water bottle) it dissolves faster when you shake it rather than it sit on the bottom for 15 minutes! :) .

Hope this helps! :)

Answer:

The Person above me is correct

Explanation:

I got it right first try 100%

Pls help me on question 30 I don't know how to do it

Answers

The rate law for a reaction that is first order in both reactants is Rate=k[A][B].  Therefore to find the rate you plug in the values you are given to get the equation rate=0.5×0.0183×0.0168 to get  Rate=1.54×10⁻⁴ mol/Ls.

I hope this helps.  Let me know in the comments if anything is unclear.
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