Life on Earth is carbon-based. Carbon is a IVa (14) element. How many bonds does carbon want to make? *

How many moles of CO2 can form from 5.1 moles of C3H8 and abundant O2 in the equation:

zmey [24]

Answer:

15.3 moles of CO₂ formed.

Explanation:

Given data:

Number of moles of CO₂ formed = ?

Number of moles of C₃H₈ react = 5.1 mol

Solution:

Chemical equation:

C₃H₈ + 5O₂ → 3CO₂ + H₂O

Now we will compare the moles of CO₂ with C₃H₈.

C₃H₈ : CO₂

1 : 3

5.1 : 3/1×5.1 = 15.3 mol

7 0

3 years ago

Acid and Base Identification

Aliun [14]

1.A (when acids react with organic molecules on your skin the reaction is highly exothermic which is why it burns you)
2.C (acids and bases can dissociate into ions or create ions)
3. B (bases tend to taste bitter an example being soap)
4.A (acids tend to taste sour an example being citric acid from lemons)
5. A (the arrhenius acid definition is that acids dissociates into H⁺ ions)
6. B (the arrhenius base definition is that bases dissociate into OH⁻ ions)
7. C (Strong acid-strong base or weak acid-strong base reactions form water and salts)
8. A (I have heard that some metals can be corroded by some bases but I don't think bases usually corrode metal)
9. A (acids have lower pH values with 7 being neutral)
10. B (bases have higher pH values with 7 being neutral)
11. A (these are some of the strong acids)
12. B (these are some of the strong bases)

I hope this helps. Let me know if anything is unclear.

6 0

3 years ago

a solution of copper sulfate slowly evaporates beautiful blue crystals made Cu(11) and sulfate ions from such that water molecul

adelina 88 [10]

Answer:

36.08%

Explanation:

We are given the overall formula of the compound as: CuSO4•5H2O

Now, atomic mass of the elements are;

Cu = 63.55 g/mol

S = 32.07 g/mol

O = 16 g/mol

H20 = 18.02 g/mol

Now, let's calculate the total mass of the compound:

(63.55 g/mol) + (32.07 g/mol) + 4(16 g/mol) + 5(18.02 g /mol) = 249.72 g/mol

From the above, water in the compound is 5(H20)

Thus, total water atomic mass = 5 × 18.02 = 90.1 g/mol

Thus, percentage of water = (atomic mass of water/total mass of compound) × 100%

Percentage of water = (90.1/249.72) × 100% = 36.08%

6 0

3 years ago

Assuming the metals lose all their valence electrons and the nonmetals gain electrons to complete the s-p subshells, which listi

Nataly [62]

Answer: Option (c) is the correct answer.

Explanation:

Atomic number of sodium is 11 and its electronic configuration is $1s^{2}2s^{2}2p^{6}3s^{1}$ . When sodium loses one electron then it will attain +1 charge and its electronic configuration will be as follows.

$Na^{+}$ : $1s^{2}2s^{2}2p^{6}$

Atomic number of fluorine is 9 and its electronic configuration is $1s^{2}2s^{2}2p^{5}$ . When fluorine gains an electron then it acquires -1 charge and its electronic configuration is as follows.

$F^{-}$ : $1s^{2}2s^{2}2p^{6}$

Atomic number of aluminium is 13 and its electronic configuration is $1s^{2}2s^{2}2p^{6}3s^{2}3p^{1}$ . When aluminium loses its valence electrons then it acquires +3 charge and its electronic configuration is as follows.

$Al^{3+}$ : $1s^{2}2s^{2}2p^{6}$

Thus, we can conclude that the listing for aluminum is correct.

8 0

3 years ago

1. How would the loss of tin oxide from the evaporating, due to spattering, etc. affect the empirical formula of your tin oxide?

Burka [1]

Answer:

It will have no effect

Explanation:

The loss of tin oxide to evaporation will have no effect on the empirical formula of a compound.

The empirical formula of any compound is the simplest formula of that compound by which the combining atoms can be represented.

This formula is not affect by physical changes.

According to the law of constant composition "all pure samples of the same compound have the same element in the same proportion by mass".

Regardless of the mass loss or gain of any tin oxide compound, it will have the same empirical and molecular formula. The atoms are still combining in the ratio to give the product.

6 0

4 years ago