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4 years ago

Organic chemicals always include _ and _

Chemistry

1 answer:

jek_recluse [69]4 years ago

4 0

Answer:

Explanation:

Most organic compounds contain carbon, hydrogen, and sometimes other elements such as nitrogen, sulfur, oxygen, or phosphorus.

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___Mg + ___Fe2O3 -> ___MgO + ___Fe

Zigmanuir [339]

Answer:

the answer is A)1,2,1,2

Explanation:

hop is is correct

6 0

3 years ago

Read 2 more answers

How many protons and neutrons are in an atom with this representation:

natima [27]

Answer:

1. 17 protons / 10 neutrons

2. Scandium

3. Negative

Explanation:

1. The bottom number is the same as the atomic number on top of the abbreviation. To find the # of neutrons, subtract the mass number with the number of protons

2. The bottom number (21) is the number of protons AND the atomic number (the a.n & # of pro. are always going to be the same)

3. Always think about this: if you add electrons, you take away charge - if you take away electrons, you add charge

*Idek if these were the correct correct answers but I tried my best*

3 0

3 years ago

Read 2 more answers

A sample was prepared by mixing 18. ml of 3.00 x 10^-3 m crystal violet (cv) with 2.00 ml of 0.250 m naoh. calculate the resulti

Aleks [24]

Answer : The resulting concentrations of CV and NaOH are 0.0027 M and 0.025 M respectively.

Explanation :

Step 1 : Find moles of crystal violet and NaOH.

The molarity formula is

$Molarity = \frac{mol}{L}$

Molarity of crystal violet = $3.00 \times 10^{-3} = \frac{mol (CrystalViolet)}{L}$

The volume of crystal violet solution is 18 mL which is 0.018 L.

Moles of crystal violet = $3.00 \times 10^{-3} \times 0.018 = 5.4 \times 10^{-5}$

Moles of crystal violet = 5.4 x 10⁻⁵

Moles of NaOH = $Molarity \times L = 0.250 \times 0.00200 = 5.00 \times 10^{-4}$

Moles of NaOH = 5.00 x 10⁻⁴

Step 2 : Find total volume of the solution

The total volume of the solution after mixing NaOH and crystal violet is

0.018 L + 0.00200 = 0.020 L

Step 3 : Use molarity formula to find final concentrations

Molarity of crystal violet = $\frac{mol(CrystalViolet)}{Total Volume(L) } = \frac{5.4 \times 10^{-5}}{0.020} = 2.7 \times 10^{-3}$

Final concentration of CV = 0.0027 M

Molarity of NaOH= $\frac{mol(NaOH)}{Total Volume(L) } = \frac{5.00 \times 10^{-4}}{0.020} = 0.025 \times 10^{-3}$

NaOH is a strong base and dissociates completely as follows.

$NaOH (aq) \rightarrow Na^{+} (aq) + OH^{-} (aq)$

The mole ratio of NaOH and OH⁻ is 1:1 . Therefore the concentration of OH⁻ is same as that of NaOH.

Concentration of OH⁻ = 0.025 M

8 0

3 years ago

How do you name ionic compounds?

ryzh [129]

Answer:

Consult the periodic table of elements

Explanation:

When naming ionic compounds, all of the information you’ll need is on the periodic table. Ionic compounds are formed of a metal (cation) and a non-metal (anion). You can find metals on the left and central sections of the periodic table (e.g., Barium, Radium, and Lead), while you can find non-metals on the right side of the table.[1]

6 0

3 years ago

What’s the difference between directly<br> proportional and inversely proportional.

tatiyna

Answer:

Directly proportional:

A proportion of two variable quantities. when the ratio of two quantities are constant.

inversely proportional:

when one value decreases at the same rate that the other increases.

Explanation:

I hope this does help you, have a great day. :)

7 0

3 years ago

Organic chemicals always include _____ and _____

Organic chemicals always include _ and _