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professor190 [17]
4 years ago
5

_______ was responsible for first grouping elements into triads based on similar properties.

Chemistry
2 answers:
frez [133]4 years ago
7 0
German scientist Döbereiner was one responsible for grouping elements into triads based on most notably atomic mass, many of which can be found in the periodic table to be in a pattern (for example <span><span>Iron </span><span>Cobalt </span><span>Nickel, elements 26, 27, 28)</span></span>
Sonja [21]4 years ago
4 0
I had the same answer A but I wanted to make sure
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Alexxandr [17]

krill and plankton

false

true

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false

Explanation:

6 0
3 years ago
Which electron configuration represents a selenium atom in an excited state
chubhunter [2.5K]
2-7-18-7 because selenium atom would have a total of <span>a total of 34 electrons. Hope this helps!!</span>
7 0
3 years ago
A solution consists of 35.00 g of CuSO4 dissolved in 250.0 mL of water. The molar mass of Cu is 63.55 g/mol the molar mass of S
8_murik_8 [283]

Answer:

0.87708moldm-3

Explanation:

molar \: mass \: of \: cuso4 = 63.55 + 32.07 + 4(16.00) \\  =159.62gmol {}^{ - 1}   \\ mole(n) =  \frac{mass}{molar \: mass }  \\ n =  \frac{35}{159.62}  \\ n = 0.21927mol \\ molarity =  \frac{n}{v}  \\ molarity =  \frac{0.21927}{0.25} \\ molarity = 0.87708moldm {}^{ - 3}

3 0
2 years ago
Choose all the answers that apply. What do all cells do? reproduce contain hereditary information have a nucleus break down food
Travka [436]

Answer:

contain hereditary information

break down food into energy

Explanation:

Hereditary information is contained in genes and genes are found inside the cell. This implies that the cell contains hereditary information of organisms. This hereditary information is passed on during cell division from parent to daughter cells.

Metabolism occurs in the cells. The cells use oxygen to break down food materials to produce energy.

5 0
4 years ago
What kind of energy do plants need to make food?
schepotkina [342]

the answer is chlorophyll.


hope this helped. God bless.

6 0
3 years ago
Read 2 more answers
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