Answer:
20.53 g.
Explanation:
- Knowing that every 15.0 g of pure calcium fluoride contains 7.70 g of calcium.
<u>Using cross multiplication:</u>
15.0 g of pure calcium fluoride contains → 7.70 g of calcium.
40.0 g of pure calcium fluoride contains → ??? g of calcium.
<em>∴ The mass of Ca in 40.0 g of calcium fluoride</em> = (7.70 g)(40.0 g)/(15.0 g) = <em>20.53 g.</em>
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molarity<span> is affected by </span>temperature<span> because morality is simply a measure on the volume of a particular </span>solution<span>, and the volume of a substance will be negatively or positively affected by changes in </span>temperature. In theory, volume will increase<span> when </span>temperature increases<span>, a reciprocal effect of </span><span>molarity</span>
Answer:
These regions of the spectrum with wavelengths that can pass through the atmosphere are referred to as "atmospheric windows." Some microwaves can even pass through clouds, which make them the best wavelength for transmitting satellite communication signals.
Explanation:
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The muscular and skeletal system because we use our brain to move our body it sends a signal to move that muscle that we want to use
Answer:
B) flat trigonal
Explanation:
All the Hydrogen atoms are arranged symmetrically around the Nitrogen atom which forms the base, and the two nonbonding electrons form the tip
