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natita [175]
3 years ago
13

#2 6th grade science

Chemistry
1 answer:
kirill [66]3 years ago
6 0
The answer is 4 because in that century the romans empire was raided
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Select the correct answer. What is the number of protons in this carbon atom? A. 12 B. 6 C. 18 D. 24
andrew11 [14]

Answer:

The correct answer is

C. 6 Protons

Explanation:

Carbon is a nonmetallic element that is available in  both organic and inorganic compounds.

    Carbon belongs to group 14 elements in the periodic table,carbon is a chemical element with the symbol C and atomic number 6, it can  form long chains with its own atoms, a feature called catenation.

Two allotropes of carbon available are diamonds and graphites, which have different crystalline structures

The physical properties of carbon vary widely with the allotropic form.

examples are.

  1. Graphite, diamonds and coal are all nearly pure forms of carbon
  2. Diamond is highly transparent. Graphite is opaque and black
  3. Diamond is one of the hardest substances known to man. Graphite is soft and often used as the "lead" in lead pencils
  4. Diamond has a very low electrical conductivity. Graphite is a very good conductor
  5. Very brittle, and cannot be rolled into wires or pounded into sheets

8 0
3 years ago
Specifically, what do we mean when we say that a scientific hypothesis must be testable?​
castortr0y [4]

Answer:

Explanation:

Specifically, what do we mean when we say that a scientific hypothesis must be testable? It must be able to be proven wrong. ... A scientific fact is something that observers can observe and agree to be true. A hypothesis is an educated guess that answers a question.

3 0
4 years ago
Read 2 more answers
1. What is the pressure on 2.5 L, if the initial pressure was 400 mmHg and the
S_A_V [24]

Answer:

The answer to your question is   P2 = 280 mmHg

Explanation:

Data

Pressure 1 = P1 = 400 mmHg

Volume 1 = V1 = 1.75 L

Pressure 2 = ?

Volume 2 = 2.5 L

Process

1.- Use Boyle's law to solve this problem

                  P1V1 = P2V2

-Solve for P2

                     P2 = P1V1 / V2

2.- Substitution

                    P2 = (400)(1.75) / 2.5

3.- Simplification

                   P2 = 700 / 2.5

4.- Result

                   P2 = 280 mmHg

5 0
3 years ago
The ratio of the heights 1.50 m and 75 cm of two persons can be written as ​
Blizzard [7]

Answer:

The required ratio would be 2:1

8 0
3 years ago
What formula is an empirical formula?
adoni [48]

Answer:

Explanation:

The empirical formula of a chemical compound is the simplest positive integer ratio of atoms present in a compound.

5 0
3 years ago
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