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Licemer1 [7]
3 years ago
6

Which is a cause of polarity in water molecules?

Chemistry
2 answers:
Svetradugi [14.3K]3 years ago
8 0

Answer:

an uneven charge between the oxygen molecule and 2 hydrogen molecules

Explanation:

bogdanovich [222]3 years ago
5 0
High electronegativity difference between oxygen and hydrogen
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HELP!!!!!What is the molar mass of a gas which has a density of .249 g/L at 20.0 degrees Celsius and a pressure of .95 atm?
fgiga [73]

Answer:

6.31g/mol

Explanation:

Using the ideal gas equation;

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

Mole (n) = mass (m)/molar mass (Mm)

* Mm = m/n

Also, density (p) = mass (m) ÷ volume (V)

PV = nRT

Since n = M/Mm

PV = M/Mm. RT

PV × Mm = m × RT

Divide both sides by V

P × Mm = m/V × RT

Since p = m/V

P × Mm = p × RT

Mm = p × RT/P

Mm = 0.249 × 0.0821 × 293/0.95

Mm = 5.989 ÷ 0.95

Mm = 6.31g/mol

7 0
3 years ago
DIRECTION: Supply the missing information about the scientist listed in the graphic
e-lub [12.9K]

Answer:

The missing information or their role in the discovery of the cell is as follows:

Robert Hooke: He was the first scientist to called cells to tiny box-like cavities he saw in cork and illustrated as cells.

A. Leeuwenhoek: he was a microscopist and microbiologist who used microscopes and observed many other living cells. He called animalcules to these single-cell living organisms later used to prove that cells are the fundamental unit of life.

Schwann and Schleiden:  They presented the theory that suggested that the cells are basic building blocks of all living things.

Virchow: He observed that the cell dividing and come from pre-existing cells.

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2 years ago
What is the greatest source of radiation most humans are exposed to
Scilla [17]
The greatest source of radiation is radon gas
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If you had 1.50 g of ZnSO4.7H20, zinc sulfate septahydrate, how many grams of water will there be?
MariettaO [177]

Answer:

There will be 1.50 gram of water

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What is the movement of thermal energy?
V125BC [204]
Thermal energy is atype of movement energy wich is exist in equilibrium.
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