<span>The lithosphere is mostly made of Earth's outer layer, the crust, and the upper portion of Earth's mantle. The asthenosphere is the upper part of Earth's mantle "which is also the middle layer of Earth".
Hope This Helps!
</span>
Answer:
690 g IrI₃
Explanation:
To convert from moles to grams, you have to use the molar mass of the compound. The molar mass of IrI₃ is 572.92 g/mol. You use this as the unit converter in this equation:
Round to the lowest number of significant figures which is 2 to get 690 g IrI₃.
<span>Avogadro's number
represents the number of units in one mole of any substance. This has the value
of 6.022 x 10^23 units / mole. This number can be used to convert the number of
atoms or molecules into number of moles. We calculate as follows:
</span>5.31×10^21 platinum atoms ( 1 mol / 6.022 x 10^23 atoms ) ( 78 grams / 1 mol ) = 0.6878 grams platinum
They are both true glad i could help
139.850 there ya go hope u ace it
