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svet-max [94.6K]

3 years ago

6

How many bonding electrons are shown below? H-C=C-H

1 answer:

padilas [110]3 years ago

7 0

Answer:

There are total 8 bonding electrons 6 frm the both Carbons and 2 from both hydrogens.

Explanation:

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Which of the following is a pure substance? Choose all that apply.

worty [1.4K]

Nickel is a pure substance

Rust is also a pure substance

7 0

3 years ago

Read 2 more answers

How do you analyze chemical evidence?

Sever21 [200]

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3 0

4 years ago

Given that kb for c6h5nh2 is 1.7 × 10-9 at 25 °c, what is the value of ka for c6h5nh3 at 25 °c?

lina2011 [118]

Answer: $k_a$ for $C_6H_5NH_3^+$ at 25°C is $0.588\times 10^{-4}$

Explanation: We are given $k_b$ of $C_6H_5NH_2$ at 25°C which is $1.7\times 10^{-9}$

To calculate the $k_a$ of $C_6H_5NH_3^+$ , we use the formula:

$k_w=k_a\times k_b$

$k_w\text{ at }25^o=1\times 10^{-14}$

Putting values in above equation, we get:

$1\times 10^{-14}=k_a\times (1.7\times 10^{-9})\\k_a=0.588\times 10^{-5}$

7 0

3 years ago

2. How many grams of N2 are required to produce 10.0 grams of NH3? N2 + 3 H2 - 2 NH3

SOVA2 [1]

8.24g

Explanation:

Given parameters;

Mass of NH₃ = 10g

Unknown:

Mass of N₂ = ?

Solution:

Reaction equation:

N₂ + 3H₂ → 2NH₃

Step 1: Convert 10.0 g of NH₃ into moles of NH₃

number of moles = $\frac{mass}{molar mass}$

molar mass of NH₃ = 14 + 3(1) = 17g/mol

Number of moles = $\frac{10}{17}$ = 0.59mole

Step 2: Convert the moles of NH₃ calculated in Step 1 into moles of N₂

1 mole of N₂ produced 2 mole of NH₃

0.59 moles of ammonia would be formed by $\frac{0.59}{2}$ mole = 0.29mole of N₂

Step 3: Convert the moles of N₂ calculated in Step 2 into grams of N₂.

Mass of N₂ = number of moles x molar mass

Molar mass of N₂ = 14 x 2 = 28g/mol

Mass of N₂ = 0.29 x 28 = 8.24g

learn more:

Number of moles brainly.com/question/1841136

#learnwithBrainly

6 0

3 years ago

Anyone free to help?

nlexa [21]

Answer:

D

Explanation:

You can see it going up by 20 on every line.

5 0

3 years ago