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Alexxandr [17]
3 years ago
13

If a house was viewed through infrared goggles, where would the most heat be seen? A. in the basement B. along the walls C. on t

he first floor D. near the roof
Chemistry
2 answers:
Crazy boy [7]3 years ago
5 0
It would be in the basement
laila [671]3 years ago
4 0
The most would be seen from the basement. (A)
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Sodium metal and water react to create sodium hydrogen and hydrogen gas through the unbalanced equation.
Maurinko [17]

Answer:

Theoretical yield = 2.5 g

Explanation:

Given data:

Mass of sodium = 79.7 g

Mass of water = 45.3 g

Theoretical yield of hydrogen gas = ?

Solution:

Chemical equation:

2Na + 2H₂O → 2NaOH + H₂

Number of moles of sodium:

Number of moles = mass/ molar mass

Number of moles = 79.7 g / 23 g/mol

Number of moles = 3.5 mol

Number of moles of water:

Number of moles = mass/ molar mass

Number of moles = 45.3 g / 18g/mol

Number of moles = 2.5 mol

Now we will compare the moles of hydrogen gas with water and sodium.

                        H₂O           :             H₂

                           2             :              1

                          2.5           :            1/2×2.5 =1.25 mol

                     

                           Na           :              H₂

                             2            :               1

                           3.5           :             1/2×3.5 =1.75 mol

water will be limiting reactant.

Theoretical yield:

Mass = number of moles × molar mass

Mass =  1.25 mol  × 2 g/mol

Mass = 2.5 g

8 0
3 years ago
Please help I’m torn between A and B. I’ve asked many and people say A, but I asked my science teacher and she said B. And also
astraxan [27]
If your science teacher says B, it’s probably because water has a negative and positive end, heat is just a form of energy, as other atoms can’t leave (they’re attracted to the ends) they are being insulated; but notice that ice will melt into gas (where atoms have tons of space) for other atoms to escape. Hence ice and gas aren’t ideal. (Air is a gas here.)
It’s not a 100% but hopefully it helps with some kind of analogy.
4 0
4 years ago
Which is a binary ionic compound?
inessss [21]

A binary ionic compound is composed of ions of two different elements. One of which is a metal, and the other a non-metal

8 0
4 years ago
Read 2 more answers
What is the coefficient of oxygen (O_2) in the balanced equation for the reaction written below?
Amiraneli [1.4K]

Answer:

1 is your coefficient of oxygen

Explanation:

hope it helps

5 0
4 years ago
An organism's _______ describes its genetic composition. An organism's _______ describes its appearance or observable characteri
harina [27]
I think it is C species and heredity
5 0
4 years ago
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