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stira [4]
3 years ago
12

Need Help Pls ! Homework Sheet

Chemistry
1 answer:
My name is Ann [436]3 years ago
8 0
20 balanced
21 unbalanced
22 balanced
23 balanced
24 unbalanced
25 unbalanced
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What is the total number of atoms in l.0 mole of CO?
GarryVolchara [31]
If you are referring to to the molecule, CO, it contains two atoms , C1+O1
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3 years ago
What is the "reproductive system"
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2 years ago
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Mercury has an atomic mass of 200.59 amu. calculate the mass of 3.0 x 10^10 atoms
Licemer1 [7]
To determine mass of the given number of atoms of mercury, we need a factor that would relate the number of atoms to number of moles. In this case, we use the Avogadro's number. It is a <span>number that represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. The number of units could be atoms, molecules, ions or electrons. To convert into mass, we use the given amu of mercury since it is equal to grams per mole. We calculate as follows:

</span>3.0 x 10^10 atoms ( 1 mol / 6.022 x 10^23 atoms ) ( 200.59 g / 1 mol ) = 9.99x10^-12 g Hg
5 0
3 years ago
3 elements that have similar properties
qwelly [4]

Answer:The elements in the first column of the Periodic Table (other than hydrogen) are known as Group 1A metals, or alkali metals. When you compare the chemical properties of these elements (lithium, sodium, potassium, rubidium, cesium, and francium), what you'll notice is that they are all remarkably similar.

Explanation:

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3 years ago
What is the formula of the compounds in B<br><br> pls help
grandymaker [24]

Answer:

PCl3

Explanation:

The molecular formular of a compound shows the exact number of atoms of elements present in the compound. In this illustration, there is one atom of P and 3 atoms of Cl.

The formular is given as; PCl3

5 0
2 years ago
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