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Leya [2.2K]
2 years ago
12

Balance the equation NaHCO3(s).... Please help!! Question #1

Chemistry
1 answer:
ddd [48]2 years ago
7 0

Answer:

NaHCO3 → H2O + CO2 + Na2CO3

Explanation:

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An element's atomic number is 68. How many protons would an atom of this element have?
Evgen [1.6K]
Answer: 68.

Explanation:

The atomic number is the number that idenfities an element.

The atomic number is the number of protons of an element.

Every element has a different number of protons.

The elements are arranged in the periodic table as per their atomic number (number of protons).

The first element is hydrogen (H), its atomic number is 1, and it has 1 proton.

The second element is helium (He), its atomic number is 2 (it has 2 protons)-

Those two elements form the first period (row) of the periodic table.

The second row (period) has the elements Li, Be, B, C, N, O, F and Ne, whose respective atomic numbers (number of protons are) 3, 4, 5, 6, 7, 8, 9, and 10, respectively.

And so, you may idenfity each of the 118 elements known, with a different atomic number (number of protons).
4 0
3 years ago
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What is the charge of a beta particle?<br><br> 0<br><br> 1–<br><br> 2+<br><br> 4+
marusya05 [52]
Its 2+! Dont mind this hdhdhdjhdndbdbdbdbsnnsjdndsnjd
8 0
3 years ago
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True or false; when something heats up, New energy is created, and when something cool down, Energy is destroyed.
Ann [662]

Answer:

This is false.

Explanation:

This statement directly opposes the first law of thermodynamics which states that energy can neither be created nor destroyed, but can transfer from one source to another.

4 0
3 years ago
The outside temperature is 35C, what is the temperature in K? K=274.15+ c.
krek1111 [17]

The answer is 308 K.


The formula is C + 273.15 = K

this meaning the formula for this problem would be 35 + 273.15 = 308.15.

Out of all the option choices that would be rounded to 308K.

4 0
3 years ago
When work is done on an object, the amount of ________ it has changes.
arsen [322]
Hey there!

When work is done on an object, the amount of energy it has changes.

Hope this helps!

~Autumly
3 0
3 years ago
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