A model that places earth in the center and has the sun, planets, and other objects orbiting the earth.
Explanation:
The geocentric model is a model that places earth in the center and has the sun, planets and other objects orbiting the earth.
- Based on the geocentric model of the earth, other planetary bodies revolves round the earth.
- The heliocentric model is a stark contrast of the geocentric model.
- In the heliocentric model, the sun is at the center of the solar system.
- This model is now known to be correct.
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The number of significant digits in the number 125,001 are: <span>6.
</span>Significant digits are always:
<span>1. non-zero
</span>2. <span>Any zeros between two significant digits are significant (for example 5 and 1)
</span>3. <span>A final zero or trailing zeros in the decimal portion only are significant.
Hope I helped!</span>
Answer:
1.58 M
Explanation:
is 1.66 m concentration.
Which means that 1.66 moles of are present in 1 kg of the solvent, water.
Mass of water = 1 kg = 1000 g
Moles of = 1.66 moles
Molar mass of = 98.079 g/mol
The formula for the calculation of moles is shown below:
Thus,
Total mass = 1000 g + 162.81114 g = 1162.81114 g
Density = 1.104 g/mL
Volume of the solution = Mass / Density = 1162.81114 / 1.104 mL = 1053.27 mL = 1.05327 L
Considering:-
<u>Molarity = moles/ Volume of solution = 1.66 / 1.05327 M = 1.58 M
</u>
C.
The energy produced by the Sun comes from nuclear fusion reactions.
Explanation
during formation of the solar system the centrifugal force of the sun caused it to collapse on it's self initialising nuclear fusion.
Divide measured yield by calculated yield
140/176 = 79.55%
