They conduct electricity. They tend to have conductors of electricity.
Answer:
<em><u>Group 1 is the one on the periodic table which has the greatest metallic character and group 17 is the one with the lowest metallic character.</u></em><em><u> </u></em>
Explanation:
<em><u>Hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u> </u></em><em><u>you</u></em><em><u> </u></em><em><u>✌️</u></em>
<em><u>Mark</u></em><em><u> </u></em><em><u>me as</u></em><em><u> </u></em><em><u>Brainleist</u></em><em><u> </u></em>
<em><u>Have a</u></em><em><u> </u></em><em><u>good day</u></em><em><u> </u></em><em><u>☺️</u></em><em><u>☺️</u></em>
Answer:
Homologous structure
Explanation:
Homologous structures come from same ancestors but have different functions.
Answer:
27.60 g urea
Explanation:
The <em>freezing-point depression</em> is expressed by the formula:
In this case,
- ΔT = 5.6 - (-0.9) = 6.5 °C
m is the molality of the urea solution in X (mol urea/kg of X)
First we<u> calculate the molality</u>:
- 6.5 °C = 7.78 °C kg·mol⁻¹ * m
Now we<u> calculate the moles of ure</u>a that were dissolved:
550 g X ⇒ 550 / 1000 = 0.550 kg X
- 0.84 m = mol Urea / 0.550 kg X
Finally we <u>calculate the mass of urea</u>, using its molecular weight:
- 0.46 mol * 60.06 g/mol = 27.60 g urea
