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mezya [45]
3 years ago
7

How can you identify an element that is a metalloid?

Chemistry
1 answer:
Dominik [7]3 years ago
7 0
On the periodic table, the elements colored yellow, which generally border the stair -step line , are considered to be metalloids
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PLEASE ANSWER AS SOON AS POSSIBLE! 25 Pts
vovikov84 [41]

Um Is there a picture :/

8 0
3 years ago
I have attached all the problems, but really if you just do one so I understand how to do it, that would be great!
Ivahew [28]

Answer:

Answer of question a is 345J.

Explanation:

In question a following is given in data:

-mass of iron (m) = 10.0 g

-temperature (ΔT) = final temperature- initial temperature= 100-25=  75 degree Celsius

-Specific Heat capacity of iron (c)= 0.46J/g°C.

Heat (Q)=?

Solution:

Formula for Heat is :

Q=m x c x ΔT

Q= 10 x 0.46 x 75

Q= 345 J.  

so, 345 joules of heat is needed to increase the temperature of 10 grams of iron.

  • From the above formula all other questions can easily be solved from the same procedure.
4 0
3 years ago
Which of the following statements about compounds is true?
Katarina [22]

Explanation:

A and D is the answer

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8 0
3 years ago
How many Fe atoms are within a single FeCl2 molecule
Rama09 [41]

The number of Fe atoms within a single FeCl2 molecule are one.

Explanation:

Metallic iron produces only ferrous chloride (FeCl2) on treatment with hydrochloric acid. Hydrogen gas is also liberated as the other product. But when iron is heated with chlorine gas, ferric chloride (FeCl3) is formed.

Total number of atoms within a single FeCl2 molecule are 3 atoms.

The number of Fe atoms in FeCl2 molecule are one.

Number of Cl atoms in FeCl2 molecule are two.

6 0
3 years ago
The high electrical conductivity of metals is primarily due to(1) high ionization energies(2) filled energy levels(3) mobile ele
igomit [66]
Answer=C

Mobile electrons bring about high electrical conductivity
6 0
3 years ago
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