3 years ago

Equation: 2Mg + O2 = 2MgO

Chemistry

1 answer:

Lena [83]3 years ago

8 0

B would be your answer

You might be interested in

What is the compound name for the chemical formula FECO3

Zarrin [17]

Iron (ii) carbonate

5 0

3 years ago

Which particle is a neutron most equal to in mass? A. a molecule B. an atom C. a proton D. an electron

olchik [2.2K]

Answer:

c . a proton

Protons and neutrons have approximately the same mass, about 1.67 × 10−24 grams

5 0

3 years ago

How many atoms of Lead are in a 62.7 g sample of Lead(II) permanganate?

Alexandra [31]

Answer:

$\large \boxed {8.48 \times 10^{22}\text{ atoms}}$

Explanation:

1 mol of Pb(MnO₄)₂contains 1 mol of Pb atoms.

1. Moles of Pb

$\text{Moles of Pb} = \text{62.7 g Pb(MnO$_{4}$)}_{2} \times \dfrac{\text{1 mol Pb(MnO$_{4}$)}_{2}}{\text{445.07 g Pb(MnO$_{4}$)}_{2}}\\\\\times \dfrac{\text{1 mol Pb}}{\text{1 mol Pb(MnO$_{4}$)}_{2}} = \text{0.1409 mol Pb}$

2. Atoms of Pb

$\text{Atoms of Pb} = \text{0.1409 mol Pb } \times \dfrac{ 6.022 \times 10^{23}\text{ atoms Pb }}{\text{1 mol Pb }}\\\\= \large \boxed {\mathbf{8.48 \times 10^{22}}\textbf{ atoms Pb }}$