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Rainbow [258]
3 years ago
14

When na and s undergo a combination reaction, what is the chemical formula of the product?

Chemistry
1 answer:
kvasek [131]3 years ago
5 0
The Chemica formula of the product is Na2S which is called sodium sulfide. remember that sodium is a metal and all compounds containing a metal are named with the stock system. 
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Maple syrup, which comes from the sap of maple trees, contains water and natural sugars. It's a clear, brown liquid and the suga
il63 [147K]
Maple syrup would be categorized under solutions. As it contains sugar which is very soluble in water, it dissolves completely in water depending on its solubility at that temperature making it impossible for the components to be filtered out. A solution is a homogeneous mixture.
6 0
3 years ago
Explain how the electron configuration of calcium, Ca, would illustrate the Aufbau Principle.
lord [1]

Answer:

The Aufbau Principle simply helps us determine electron configuration of an atom by stating that in the ground state of an atom or ion, electrons fill subshells of the lowest available energy level, then they fill subshells of higher energy level. For example, the 1s subshell is filled before the 2s subshell is occupied. Now, when trying to figure out the electron configuration of a calcium, you need to know its atomic number to determine its amount of total electrons. Calcium has an atomic number of 20, which means it has 20 protons and 20 electrons. First remember that the "s" subshell only holds 2 electrons, the "p" subshell only hold 6 electrons, and the "d" subshell only holds up to 10 electrons. Using the Aufbau principle below, we can determine that the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons the next 2 electrons go in the 2s orbital. The next six electrons will go in the 2p orbital. The p orbital can hold up to six electrons. We'll put six in the 2p orbital and then put the next two electrons in the 3s. Since the 3s is now full we'll move to the 3p where we'll place the next six electrons. We now go to the 4s orbital where we place the remaining two electrons. With this, the calcium electron configuration will be:

1s^2 2s^2 2p^6 3s^2 3p^6 4s^2

Hope that helps you understand!

8 0
3 years ago
What phase change occurs during evaporation?
vlabodo [156]
It turns liquid to gas. Hoped this helped!!
5 0
3 years ago
Read 2 more answers
5, the answer is not c , pleaser answer
Tom [10]
I pretty sure that it’s b
6 0
3 years ago
How many moles of H 3 PO 4 are produced when 71.0 g P 4 O 10 reacts completely to form H 3 PO 4
Dimas [21]

Answer:

It will be produced 1 mol of H₃PO₄

Explanation:

The reaction is this one:

P₄O₁₀  +  6H₂O  →  4H₃PO₄

Molar mass of P₄O₁₀  = 283.88 g/m

Mol = Mass / Molar mass

Mol = 71 g / 283.88 g/m = 0.250 mol of P₄O₁₀

Ratio is 1:4 so 1 mol of P₄O₁₀ will produce 4 moles of phosphoric in the reaction.

0.250 mol of P₄O₁₀ will produce 1 mol of H₃PO₄  (0.250 .4)

7 0
3 years ago
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