1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
natita [175]
3 years ago
13

What is scientific "law"?

Chemistry
1 answer:
Natalka [10]3 years ago
4 0
Based on (repeated) experiments or observations, that describe or predict a range of natural phenomena. the answer is c (sorry if i’m incorrect)
You might be interested in
How does adding a non-volatile solute to a pure solvent affect the boiling point of the pure solvent?
belka [17]
The correct answer is the second statement. The solvent will have a higher boiling point. Adding a non-volatile solute to a pure solvent will increase the boiling point of the solvent. This solution exhibit colligative properties. Colligative properties depend on the amount of solute dissolved in a solvent. These set of properties do not depend on the type of species present. 
7 0
3 years ago
X^2+13x+30<br> How do I factor this?<br> will give brainiest
podryga [215]

Answer:

(x+10) (x+3)

Explanation:

1) this quadratic equation is in the form of: ax^2+bx+c

where we need to figure out what*what=c(30)

and what+what=13(b)

factors of 30:  -1,-30  1,30  2,15  -2,-15  3,10  -3,-10  5,6   -5,-6

factors of 30 which equal 13:    3,10

lets substitute 3 and 10 in lace of 13x to factor by grouping:

x^2+3x+10x+30

make two sets:

set a) x^2+3x

set b) 10x+30

the GCF in set a is "x":

x(x+3)

The Gcf in set b is 10:

10(x+3)

now combine the terms outside the parantheses:

(x+10)(x+3)=0

Hope this helps!

7 0
3 years ago
Read 2 more answers
A sample of carbon tetrachloride (CCI) contains 3 moles of the substance. How many atoms are there in the sample?
STALIN [3.7K]

Answer:

Number of atoms =1.806×10²⁴

Explanation:

You have the number of moles of Carbon tetrachloride which is n=3

And you are looking for number of atoms that are in the sample, which are represented by the letter "N"

The formula that has both number of moles(n) and number of atoms(N) is written as n=N/Na

Na is called the Avogadros number and it is equal to 6.08×10²³, it never changes(it is a constant)

So you will substitute the number of moles and the avogadros number to you formula, and the only unknown will be the number of atoms which you are looking for

  • n=N/Na
  • 3=N(6.02×10²³)
  • N=1.806×10²⁴ atoms of CCl

NB: N does not represent the number of atoms only. It may also represent the number of particles or molecules...

3 0
3 years ago
4) Which indicator, when added to a solution, changes color from yellow to blue as the pH of the
Arte-miy333 [17]

Answer:

c) bromthymol blue

Explanation:

An acidic solution has a pH value less than 7, while the pH is 7 for a neutral solution and grater than 7 for a basic solution.

Bromothymol blue is a pH indicator which is yellow in color when placed in an acid (pH under 7), the color is green in a neutral solution (pH of 7) and blue in an basic solution (pH over 7).

If bromthymol blue is added to a solution with an initial pH of 5.5 (acidic), the color would be yellow and as the pH changes to 8 (basic), the color changes to blue.

7 0
3 years ago
The periodic table consists of elements following a repeating pattern of
Alex73 [517]
<span>are organized in order of their atomic numbers</span>
4 0
3 years ago
Read 2 more answers
Other questions:
  • The atomic weight of a newly discovered element is 98.225 amu. it has two naturally occuring isotopes. one isotope has a mass of
    5·1 answer
  • Calculate the oxidation number of “C” in CH3COCH3 please
    15·1 answer
  • A chemist has one solution that is 80% acid and another solution that is 30% acid. how much of the second (30%) solution is need
    15·1 answer
  • What products would you expect from the reaction of ammonia and sulfuric acid in aqueous solution? 2nh3(aq)+h2so4(aq)→ ?
    11·1 answer
  • Please for the love of jesus help. );
    7·1 answer
  • Select True or False.<br> The Sun is like the stars we see at night.<br> False<br> True
    13·2 answers
  • If 4.59 g of potassium reacts with 3.6 g of sulfur according to the following reaction, how many grams of potassium sulfide can
    6·1 answer
  • A 40-kg dog on roller skates is acceleration at 2 m/s^2. What is the net force of the dog
    6·1 answer
  • g 1. Write a balanced chemical equation, including physical state symbols, for the decomposition of solid sodium azide (NaN3) in
    6·1 answer
  • What is the change in the freezing point of water when 35.0 g of sucrose is
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!