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stellarik [79]
3 years ago
9

Identify the following properties of ionic bonds .

Chemistry
1 answer:
madreJ [45]3 years ago
3 0

Answer:

properties of ionic bond

good conductivity

hard

solid at room temperature

ability to dissolve in water

can't dissolve in non polar solvents

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3. How many meters long is a 360 inches long extension cord?
tekilochka [14]

Answer:

9.144 meters.

Explanation: Formula: divide the length value by 39.37 , which yields 9.144.

7 0
3 years ago
A small bottle of water is left on the shore of a very large lake on an extremely cold winter night. What is most
marta [7]

Answer:

A

Explanation:

Because it is a cold winter night making the lake freeze and the bottle is already solid.

4 0
3 years ago
How many moles of H2O are needed to react with a mole of 3.0 of Na?​
AveGali [126]

Answer: 3.0 moles of water (H_2O)  are needed to react with a mole of 3.0 of Na

Explanation:

The balanced chemical reaction of sodium with water is as follows:

2Na+2H_2O\rightarrow 2NaOH+H_2

According to stoichiometry:

2 moles of sodium (Na) reacts with = 2 moles of water (H_2O)

Thus 3.0 moles of sodium (Na) reacts with = \frac{2}{2}\times 3.0=3.0 moles of water (H_2O)

3.0 moles of water (H_2O)  are needed to react with a mole of 3.0 of Na

5 0
3 years ago
Which statement describes how the Van Allen belts are formed? O when low-energy particles from the Sun bounce off Earth’s magnet
aniked [119]

Answer:

when high-energy particles from the sun are trapped by earth's magnetic field

Explanation:

it is produced by a "depression" in the Earth's magnetic field in that area, caused by the fact that the center of the Earth's magnetic field is deviated from its geographic center by 450 km. Such an anomaly is thought by some to be a side effect of a Geomagnetic Reversal. These radiation belts originate from the Earth's intense magnetic field that is the product of their rotation. That field traps charged particles (plasma) from the Sun (solar wind), as well as charged particles that are generated by interaction of the Earth's atmosphere with cosmic radiation and high-energy solar radiation.

8 0
3 years ago
Read 2 more answers
Chromium metal can be produced by the following reaction:
Mrac [35]

Answer:

17.3 g Cr

Explanation:

To find the mass of chromium, you need to (1) convert moles Si to moles Cr (using the mole-to-mole ratio from equation coefficients) and then (2) convert moles Cr to grams Cr (using the atomic mass). It is important to arrange the conversions in a way that allows for the cancellation of units. The final answer should have 3 sig figs to match the sig figs of the given value (0.250).

3 Si + 2 Cr₂O₃ ---> 4 Cr + 3 SiO₂
^                              ^

Atomic Mass (Cr): 51.996 g/mol

0.250 moles Si           4 moles Cr            51.996 g
-------------------------  x  --------------------  x  -------------------  =  17.3 g Cr
                                     3 moles Si              1 mole

6 0
2 years ago
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