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konstantin123 [22]
2 years ago
13

Balance the reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1.

" Pb(NO₃)₂ + NaI → PbI₂ + NaNO₃
Chemistry
2 answers:
BARSIC [14]2 years ago
4 0
Balanced chemical reaction: <span>Pb(NO₃)₂ + 2NaI → PbI₂ + 2NaNO₃.
In this balanced chemical reaction there are two atoms of sodium, one atom of lead, two atoms of nitrogen, six atoms of oxygen and two atoms of iodine in both side of chemical reaction.
Lead has oxidation number +2, sodium has +1 and iodine -1.</span>
Pie2 years ago
4 0

Answer:

blank, 2, blank, 2

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water is conductor or insluator? nails are conductor or insulator? key chains are conductor or insulator?
e-lub [12.9K]

Answer:

Explanation:

Water is a conductor if it has solutes/ions dissolved in it(tapwater for example)

but pure water is not a good conductor of electricity.

Nails and keychains(made of metal) are conductors of electricity.

3 0
3 years ago
At a certain temperature and pressure, one liter of CO2 gas weighs 1.95 g.
AysviL [449]

Answer:

1.332 g.

Explanation:

  • We can use the general law of ideal gas: <em>PV = nRT.</em>

where, P is the pressure of the gas in atm.

V is the volume of the gas in L.

n is the no. of moles of the gas in mol.

R is the general gas constant,

T is the temperature of the gas in K.

  • At the same T and P and constant V (1.0 L), different gases have the same no. of moles (n):

<em>∴ (n) of CO₂ = (n) of C₂H₆</em>

<em></em>

∵ n = mass/molar mass

<em>∴ (mass/molar mass) of CO₂ = (mass/molar mass) of C₂H₆</em>

mass of CO₂ = 1.95 g, molar mass of CO₂ = 44.01 g/mol.

mass of C₂H₆ = ??? g, molar mass of C₂H₆ = 30.07 g/mol.

<em>∴ mass of C₂H₆ = [(mass/molar mass) of CO₂]*(molar mass) of C₂H₆</em> = [(1.95 g / 44.01 g/mol)] * (30.07 g/mol) =<em> 1.332 g.</em>

<em></em>

7 0
3 years ago
Gathering information from a distance through images, sound waves ,radio waves, ext are called
zalisa [80]
Called REMOTE SENSING I think
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Sarah's class is studying soils. Her teacher, Ms. Jones, stated that plants will growth in any soil type. Students in Sarah's cl
ivanzaharov [21]

Answer: C)The smaller the soil particles, the more water and air available for plant growth.

Explanation:

4 0
3 years ago
Read 2 more answers
When aqueous solutions of Li3PO4 and MgSO4 are mixed, Mg3(PO4)2 is a precipitate
Lesechka [4]

Answer:

Li2SO4

Explanation:

Balance the reaction of Li3PO4 + MgSO4 = Li2SO4 + Mg3(PO4)2 using this chemical equation balancer!

8 0
3 years ago
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