3 years ago

How do you find empirical formula

1 answer:

6 0

Answer:

Convert the mass of each element to moles using the molar mass from the periodic table. then Divide each mole value by the smallest number of moles calculated. Round to the nearest whole number

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Which of these is a element? A) Oxygen B) Sodium chloride C) Water D) Air

Sladkaya [172]

B) Sodium chloride

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Hope this helps!

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3 years ago

Read 2 more answers

While hiking in a rural area, you encounter a wetland and conclude that it's a swamp. Which feature helped you reach this conclu

german

Answer: B. It's located near a lake.

Explanation:

A swamp is a kind of wetland which can found near the shores of the lakes. Many swamps also occur along the shores of the rivers. These are dominated by the aquatic vegetation. The swamp wetland is exposed to soil saturation due to surface runoff.

According to the above explanation, It's located near a lake is the correct option.

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4 years ago

A student is carrying out a biological preparation that requires 1 M NaCl to maintain an ionic strength of 1.0. The student choo

nignag [31]

Explanation:

The ionic strength of a solution, I, is defined as

I=1/2 Σ m_i z_i^2

Where m_i is the concentration of the ion, and z_i is the charge of the ion.

For 1 M NaCl solution, Ionic strength I = ½ (1*12 + 1*12) = 1.00;

For, 1 M (NH4)2SO4, concentration of [NH4] = 2 M and [SO4] = 1 M;

I = ½ (2*12 + 1*22) = 3.00;