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Anna11 [10]
3 years ago
8

What is the final overal charge in CaCL2

Chemistry
1 answer:
Law Incorporation [45]3 years ago
6 0
Honestly, you can look at the notes you took and even look down some things in google to help u solve ur answer
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How many moles are in .5g of sodium bromide?
3241004551 [841]

Answer: 4.86 x 10⁻³ mole.

Explanation:

  • The number of moles can be calculated using the relation; n = mass / molar mass.
  • n is the number of moles, mass is the mass of the substance in g (m = 0.5 g), and molar mass of NaBr = 102.894 g/mole.
  • n = mass / molar mass = (0.5 g) / (102.894 g/mole) = 4.86 x 10⁻³ mole.
8 0
3 years ago
How many moles in 28 grams of CO2?
Phantasy [73]

# moles = mass / Mr

moles = 28 / (12+(16*2))

#moles = 28/44

#moles = 0.63 moles

4 0
3 years ago
Is one unlit match an example of a physical or chemical change, or a physical or chemical property?​
Korolek [52]

I believe it’s physical property because there is no chemical reaction to an unlit match‍♀️

8 0
3 years ago
synergistic interlayer and defect engineering in vs2 nanosheets toward efficient electrocatalytic hydrogen evolution reaction
Sever21 [200]

It is stated that VS2 nanosheets with abundant defects and an extended (001) interlayer spacing as large as 1.00 nm, which is a 74% expansion as compared to that (0.575 nm) of the pristine counterpart, may be produced using a straightforward one-pot solvothermal process.

For the electrocatalytic hydrogen evolution reaction (HER), the interlayer expanded VS2 nanosheets display exceptional kinetic metrics, including a low overpotential of 43 mV at a geometric current density of 10 mA cm2, a small Tafel slope of 36 mV dec1, and long-term stability of 60 h without any current fading. The performance is even comparable to that of the commercial Pt/C electrocatalyst and significantly better than that of the pure VS2 with a typical interlayer gap.

Learn more about electrocatalytic here-

brainly.com/question/28463319

#SPJ4

4 0
2 years ago
Can someone help me? We literally started this unit yesterday and I got quarantined so I dont have a clue what im doing..
zloy xaker [14]

Answer:

Explanation:

Take out your periodic table.

The choices that have one 1 member of the periodic table on it are elements.

He is the symbol for Helium

O2 oxygen

C3 but this is really odd. It is Carbon but Carbon usually does not  combine in 3s.

The rest are all compounds (they are made up of the elements on the periodic table). For example

H2SO4

is made up of 2 Hydrogens

1 sulfur

4 oxygens.

All the others do exactly the same thing.

3 0
3 years ago
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