All categories

3 years ago

Magnesium oxide is a binary ionic compound. From the formula MgO, how do you know that Mg is the metal?

Chemistry

1 answer:

hammer [34]3 years ago

8 0

Answer:

See below.

Step-by-step explanation:

Method 1:

You know that oxygen is a non-metal.

If the compound is ionic, the oxygen must be combined with a metal.

The Mg must be a metal.

Method 2:

In the formulas of ionic compounds, the positive ion (usually a metal) is written first.

You might be interested in

X square+4x+4 factories that

Maslowich

Answer:
(x + 2)(x + 2)

Explanation:
You need 2 numbers that times to give 4 and add to give 4. So 2 and 2.

4 0

3 years ago

A chemical reaction that is expected to form 325.0 gof product only forms 123.8 g of product. What is the percent yield of this

Tasya [4]

Answer:

$\boxed {\boxed {\sf A. \ 38.1 \%}}$

Explanation:

Percent yield is the ratio of the amount actually produced to how much could theoretically be produced. It is found using this formula:

$\% \ yield = \frac{actual \ yield}{theoretical \ yield} *100$

For this reaction, the theoretical or expected yield is 325.0 grams. The actual yield is 123.8 grams.

$\% \ yield = \frac{ 123.8 \ g }{325.0 \ g }*100$

Divide.

$\% \ yield = 0.380923077 *100$

$\% \ yield = 38.0923077$

Round to the nearest hundredth. The 9 in the hundredth place tells us to round the 0 to a 1 .

$\% \ yield \approx 38.1$

The percent yield is about 38.1%

5 0

2 years ago

Read 2 more answers

Hhheppppp fffaaast

umka21 [38]

Answer:

False

Explanation:

Lead sulfate is insoluble in water and sinks in water

(sorry if it's wrong)

4 0

2 years ago

I need help..would it be A???

Dovator [93]

Answer:

probably

Explanation:

Because fossil fuel is the main fuel source, so any fuels that are not fossil fuels are alternative.

7 0

3 years ago

1.50μm2. Convert this to square meters.

mars1129 [50]

Based on the standards of units conversion, to convert from micrometer to meter, we multiply by 10^-6.
Since we there is a square (10^2) to consider, then to convert from micrometer squared to meter squared, we will multiply by (10^-6)^2 as follows:
1.5 μm2 = 1.5 x (10^-6)^2 = 1.5 x 10^-12 meter sqaures

6 0

3 years ago