All categories

3 years ago

When combining Magnesium and Oxygen, what is the correct formula and compound name?

1 answer:

5 0

<span> Magnesium appears as the cation Mg 2+ and Oxygen appears as the anion O 2- and when combined they create MgO, which is Magnesium Oxide.</span>

You might be interested in

Stella has poured 3 cups of water into a 1-L soda bottle. Stella then sealed the bottle and placed it in the sunlight. What natu

san4es73 [151]

The answer is D. The Water Cycle

7 0

3 years ago

Read 2 more answers

At 293 K, methanol has a vapor pressure of 97.7 Torr and ethanol has a vapor pressure of 44.6 Torr. What would be the vapor pres

Bad White [126]

Answer: The vapor pressure of a mixture of 80 g of ethanol and 97 g of methanol at 293 K is 78.3 torr.

Explanation:

According to Raoult's law, the vapor pressure of a component at a given temperature is equal to the mole fraction of that component multiplied by the vapor pressure of that component in the pure state.

$p_1=x_1p_1^0$ and $p_2=x_2P_2^0$

where, x = mole fraction in solution

$p^0$ = pressure in the pure state

According to Dalton's law, the total pressure is the sum of individual pressures.

$p_{total}=p_1+p_2$ $p_{total}=x_Ap_A^0+x_BP_B^0$

moles of ethanol= $\frac{\text{Given mass}}{\text {Molar mass}}=\frac{80g}{46g/mol}=1.7moles$

moles of methanol= $\frac{\text{Given mass}}{\text {Molar mass}}=\frac{97g}{32g/mol}=3.0moles$

Total moles = moles of ethanol + moles of methanol = 1.7 +3.0 = 4.7

$x_{ethanol}=\frac{1.7}{4.7}=0.36,$

$x_{methanol}=1-x_{ethanol}=1-0.36=0.64$

$p_{ethanol}^0=44.6torr$

$p_{methanol}^0=97.7torr$

$p_{total}=0.36\times 44.6+0.64\times 97.7=78.3torr$

Thus the vapor pressure of a mixture of 80 g of ethanol and 97 g of methanol at 293 K is 78.3 torr.

8 0

4 years ago

Which type of chemical bonding involves a transfer of electrons?

BigorU [14]

Answer:

ionic bond

Explanation:

7 0

2 years ago

Read 2 more answers

Which of the following is the main disadvantage to using fossil fuels?

steposvetlana [31]

The answer is A)pollution

7 0

3 years ago

Read 2 more answers

The area of a telescope lens is 6.668 × 103 mm2. What is the area in square feet (ft2)? Enter your answer in scientific notation

ollegr [7]

Answer:

$7.13\times 10^{-2}\ ft^2$

Explanation:

The area of a telescope lens is 6.668 × 10³ mm²

We need to convert the area in ft².

We know that,

$1\ mm^2=1.07\times 10^{-5}\ ft^2$

It means,

$6.668 \times 10^3\ mm^2=6.668 \times 10^3\times 1.07\times 10^{-5}\ ft^2\\\\=0.0713\ ft^2$

$0.0713\ ft^2=7.13\times 10^{-2}\ ft^2$

So, the required answer is $7.13\times 10^{-2}\ ft^2$ .

3 0

3 years ago