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soldi70 [24.7K]
3 years ago
11

Your friend cuts his sandwiches in half diagonally because then he gets twice as much

Chemistry
2 answers:
Tcecarenko [31]3 years ago
6 0

Answer:

It is still one sandwich it doesn't become twice the size just because you cut it, it just becomes one sandwich cut into two

Explanation:

daser333 [38]3 years ago
4 0
Wym? I dont have friends lol
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Which defines the word planet?
kvv77 [185]

Answer:

I think it's D cause one of the requirements for a planet is that it has to revolve around a star

6 0
3 years ago
How many hydrogen atoms are found in 3H2CO3?
Fiesta28 [93]

Answer:

6

Explanation:

The number of hydrogen atoms in the given compound is 6 atoms.

  Given compound is:

              3H₂CO₃

An atom is the smallest indivisible particles of an element.

  In the compound;

             3H₂CO₃

          Elements          Number of atoms

               H                       3(2)  = 6

               C                       3(1)   = 3

               O                       3(3)    = 9

The number of hydrogen atoms in the compound is 6

5 0
3 years ago
Consider the following reaction: 3Fe(s) + 4H₂O(g) ➞ Fe₃O₄(s) + 4H₂(g). To answer the following question: "How many moles of hot
Elodia [21]

Answer: 2

Explanation:

To calculate the moles :

\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}

\text{Moles of} Fe_3O_4=\frac{275g}{233.5g/mol}=1.18moles

3Fe(s)+4H_2O(g)\rightarrow Fe_3O_4(s)+4H_2(g)  

According to stoichiometry :

1 mole of Fe_3O_4 are produced by = 4 moles of H_2O

Thus 1.18 moles of Fe_3O_4 will be produced by=\frac{4}{1}\times 1.18=4.72moles  of H_2O

Mass of H_2O=moles\times {\text {Molar mass}}=4.72moles\times 18g/mol=85.0g

Thus 85.0  g of H_2O will be required and 2 steps are required to get the answer.

6 0
3 years ago
Which uses of iron are due to its chemical properties? Select two options.
kondaur [170]

Answer:

producing colored sparks in fireworks and rusting in the presence of water and oxygen

Explanation:

yeet

5 0
3 years ago
Read 2 more answers
24. When the equation
serg [7]

Answer:

Explanation:

3

Explanation:

The reaction expression is given as:

     Al(OH)₃  +   HNO₃   →    H₂O   +  Al(NO₃)₃  

To solve this problem, let us assign coefficient a,b,c and d to each specie;

          aAl(OH)₃  +   bHNO₃   →    cH₂O   +  dAl(NO₃)₃  

Conserving Al : a  = d

                  O:  3a + 3b  = c + 9d

                  H: 3a + b  = 2c

                  N: b  = 3d

let a = 1 , d  = 1, b  = 3 , c = 3

 Multiply through by 3;

a  = 1, b  = 3, c = 3 and d  = 1

  Al(OH)₃  +   3HNO₃   →    3H₂O   +  Al(NO₃)₃  

7 0
3 years ago
Read 2 more answers
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