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AysviL [449]
4 years ago
8

7) Aluminum forms an ion with a charge of ? A) 2+ B) 1- C) 3+ D) 2- E) 0

Chemistry
1 answer:
Allisa [31]4 years ago
3 0

Answer:

C. 3+ ((I have to have an answer of 20 characters just ignore this))

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All atoms of the same element have the same what??
yKpoI14uk [10]
All atoms of the same element have the same atomic number
8 0
3 years ago
Please check what I have and help!!
steposvetlana [31]
Moles = mass(g) / ar

Reconfigure the eqn to
Mass(g) = Moles × ar

Imput the info you have and the ar of Mn and you should be able to get your ans. Sorry, i dont have a calculator with me.

8 0
3 years ago
A certain chemical reaction releases of heat for each gram of reactant consumed. How can you calculate what mass of reactant wil
WARRIOR [948]

Answer:

Specific heat capacity formula

Explanation:

The heat capacity gives the exact heat energy at which a given mass of a substance is heated from one temperature to another.

This formula can help determine how much heat is gained or lost during the reaction and is given by:

Q = mcΔT

where:

Q = heat energy in Joules or Calories

m - mass of the substance (g)

c = Specific heat capacity (J/kg°C)

ΔT = change in temperature = (final temp - initial temp) (°C)

I hope this was helpful.

3 0
3 years ago
Second pic is the possible answers- science- pls help- ill give brainliest-
sweet [91]

Answer:

D

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trial 2 was the tallest

5 0
3 years ago
Read 2 more answers
The human body is 0.0040% iron. How many milligrams of iron does a 165 pound person contain?​
Fofino [41]

Answer:

in a body of 165 pounds, the iron content is 2993.707 mg

Explanation:

  • % iron = 0.0040% = (mass iron / mass human) * 100

⇒ mass iron / mass human = 4 E-5

∴ mass human = 165 pounds

⇒ mass iron = 165 pounds * 4 E-5

⇒ mass iron = 6.6 E-3 pounds * ( 453.592 g/pound ) * ( 1000 mg/g )

⇒ mass iron = 2993.707 mg iron

8 0
3 years ago
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