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Nana76 [90]
4 years ago
9

What is the symbol for Sodium Chloride? A. NaOH B. NaCl C.SbCl3 D.HCl

Chemistry
1 answer:
Ivenika [448]4 years ago
6 0

Answer:

B.

Explanation:

Na is Sodium and Cl is Chlorine [Chloride]

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How much heat, in kJ, is required to raise the temperature of 50 g of water by 5.53°C? (Round to the nearest 10 kJ, and enter on
Triss [41]

Answer:

Q=1.16kJ

Explanation:

Hello,

in this case, the required heat to increase the water by 5.53 °C is computed by using the mass, heat capacity and change in temperature during the process:

Q=mCp\Delta T

Thus, for the given data we compute it in kJ:

Q=50g*4.186\frac{J}{g*\°C}*(5.53\°C)*\frac{1kJ}{1000J} \\\\Q=1.16kJ

Best regards.

5 0
3 years ago
What reactions is : energy released as light or thermal energy ( synthesis, combustion, replacement, decomposition)
Levart [38]
This answer is synthesis
7 0
4 years ago
one parsec equals 3.26 light years, where a light year is the distance light travels in one year. if the speed of light is 18600
Tpy6a [65]
Parsec is a unit of distance (as stated 1 Parsec = 3.26 light years, wihch is 3.26 times the distance run by light in one year).

That distance is:

1 parsec = 3.26 mi× 186,000 mi/s × 3600 s/h × 24 h/day × 365 day/ year × 1 year = 19,122,168,960,000.mi.

So, the question of <span>how many parsecs it takes for light to reach Mars from Earth does not make sense because parsecs is not a unit of time.
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</span><span>You can calculate how many parsecs is equivalent to the distance between Mars and Earth, 60,000,000 km. For this you can first calculate the  equivalence of which you do in this way:
</span><span>
</span><span>
</span><span>60,000,000 km × 0,621 mi/km  × 1 parsec / ( 19,122,168,960,000 mi) = 1.94E-6 parsecs.
</span><span>
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7 0
3 years ago
The most stable conformation of trans-1-tert-butyl-2-methylcyclohexane is the one in which:
Margaret [11]

The most stable conformation of trans-1-tert-butyl-2-methylcyclohexane is the one in which both the tert-butyl group and the methyl group are located near the equatorial position. Trans conformation are usually stable at the equatorial position to avoid the bulkyl group ( the tert-butyl group and methyl group) be together to reduce the so called Steric hindrance.

4 0
3 years ago
Which is transferred by all types of waves
bonufazy [111]

Answer:

Explanation:

The question is what do all types of waves transfer. Waves, both mechanical and electromagnetic are disturbances that transfer energy without transporting matter. It doesnt matter wether they are propagating trough a medium or trough vacuum. Therefore the correct answer is A. energy.

3 0
3 years ago
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