Answer:
<em>they</em><em> </em><em>all </em><em>form</em><em> </em><em>diatomic </em><em>molecules.</em><em> </em>
<em>for</em><em> example</em><em>:</em><em> </em><em>H</em><em>2</em><em>,</em><em> </em><em>F2, Cl2, Br2, I2, and At2</em><em>)</em><em> </em><em>and they all form </em><em><u>negatively charged ions</u></em><em> H-, F-, Cl-, Br-, I-, and At</em><em>-</em><em> </em><em>.</em>
Kelvin is the standard unit for temperature, just how like grams is for weight. We need to use it because it’s based on the idea of absolute zero, or 0K, which is a point where time itself freeezes
Most likely the organic compound that contains a carbonyl group bonded near to the end of the chain would be an aldehyde. Unlike a ketone where the carbonyl can be found anywhere within the chain, an aldehyde, is specifically found near the end of the compound, because it would be bonded to H as well.
Answer: 7.826 x 10^23 molecules
Explanation: 1 mole of NaOH is equal to 40 g, so we can start setting up the equation by saying that 52 g NaOH= 1 mole/40 g. Since one mole= 6.02 x 10^23 representative particles, or molecules, the next step in the equation is to multiply by 6.02 x 10^23/1 mole NaOH. The final equation comes out to be:
52 g NaOH = 1 mole/40g x 6.02 x 10^23/1 mole NaOH = __molecules NaOH
Now all that's left to do is to multiply across the top and divide by the bottom!
matching element is as below
calcium -ca
iron- Fe
nickel=Ni
copper-Cu
gold- Au
<h3><u>explanation</u></h3>
symbols is a code for a chemical element. some element are given symbols from their first two letters for example calcium symbol Ca is from first two letters. some symbols are from latin words example symbol Au for gold is from a latin word Aurum