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vfiekz [6]
3 years ago
10

How many atoms are in NaHCO3? And please explain how u got the answer.

Chemistry
1 answer:
antiseptic1488 [7]3 years ago
3 0

Answer:

There are 6 atoms in NaHCO3

Explanation:

NaHCO3 is a bicarbonate commonly known as baking soda.

It has one sodium atom, one hydrogen atom, one carbon atom, and three oxygen atoms

The number of atoms = 1 atom of Na + 1 atom of H + 1 atom of C + 3 atoms of O

= 6 atoms per molecule

Note: know the formula of the compound first, each element present in the compound and how many times they occur makes the total number of atoms making up the compound or present in the compound.

Number of atoms are the number of element present

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A chemist needs 0.550 mol selenium for a reaction. What mass of selenium should a chemist use?
-BARSIC- [3]

Answer:

The chemist would require to use 43.43 grams.

Explanation:

In order to solve this problem we need to know<u> how much do 0.550 moles of selenium weigh</u>. To do that we use selenium's<em> molar mass </em>and multiply it by the given number of moles:

  • 0.550 mol * 78.96 g/mol = 43.43 g

The chemist would require to use 43.43 grams.

4 0
3 years ago
0.00099989<br> 3 sig figs, scientific notation
mixas84 [53]
1.00*10^3
You’d need to lower the exponent because rounding to 3 sig figs changes the 9’s to - 1000. Keep the 0’s.
5 0
3 years ago
4. Synthesis problems. Propose a synthetic route from the starting material to the product. In your answer, show each individual
Troyanec [42]

The reduction of alkyne to an alkene in the first step allows the best reagent to be chosen for each subsequent step.

Describe reagents.

A reagent is merely an essential component of a chemical reaction, it should be mentioned. It is an ingredient that speeds up the reaction.

With H2 and Lindlar's catalyst, an alkyne is reduced to alkene as the initial step in this process. Alkene will then be brominated to produce allyl bromide as the next step.

In this instance, the required allyl alcohol will be produced via the reaction of allyl bromide with NaOH.

Learn more about reagent here brainly.com/question/23342137

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5 0
1 year ago
How are distillation and reverse osmosis alike?
Andrei [34K]
I'm having trouble with this one. At the very least, they both purify water. If I'm not mistaken, distillation is part of the process of purifying water.
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3 years ago
In everyday speech the words precision and accuracy are often used interchangeably. When these terms are used in science are the
padilas [110]

Answer:

            No, in science their meanings are not the same as their everyday meanings.

Explanation:

                   In Science, Precision and Accuracy are defined as,

Accuracy:

               Accuracy is the value which is closest to the known or standard value.

Precision:

                While, Precision is the value of closeness of two measured values to each other.

Example:

             Let suppose in Chemistry Lab you weight an object as 50 g. While the actual weight of that object is 30 g. It means your reading is not accurate.

             On second measurement you find that the object weight is 31 g. This time your reading is not precise.

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3 years ago
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