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3 years ago

Which of the following has almost no mass?

Chemistry

1 answer:

elixir [45]3 years ago

5 0

It’s is c. Electrons

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Sholpan [36]

Answer:

area a

Explanation:

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3 years ago

Predict the geometry about each interior atom in acetic acid:

aleksandr82 [10.1K]

The atomic structure of the acetic acid is:

H O

l l

H – C – C – O – H

We can see from the structure that there are 2 interior atoms, and these are all Carbon atoms.

The geometry is:

Tetrahedral on First Carbon

Trigonal Planar on Second Carbon

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4 years ago

What element makes protein different from carbohydrate and fat? select one:

Savatey [412]

D........... Nitrogen

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3 years ago

What is the difference between the product and the reactant

timama [110]

Answer:

Explanation:

A reactant is a substance that is present at the start of a chemical reaction. The substance(s) to the right of the arrow are called products . A product is a substance that is present at the end of a chemical reaction.

h2 + 02 = h2o

<h2 />

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3 years ago

To interconvert the concentration units molality (m) and mass percent, you must also know the density of the solution. A) True B

uranmaximum [27]

Answer:

The correct answer is option false.

Explanation:

Molality of the solution defined as moles of substance present in 1 kilogram of solvent.

Moles = $\frac{Mass of solute}}{\text{molar mass of solute}}$

$Molality=\frac{Moles}{\text{Mass of solvent(kg)}}$

Mass of percent (w/w%) of the solution is defined as amount of solute present in 100 grams of solution.

$(w/w\%)_=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 100$

So, if want to inter-convert molality into mass percent we can do that without knowing density of solution.

Mass of solution = Mass of solute + Mass of solvent

7 0

3 years ago