What is the final temp of

4. Suppose you want to deposit silver on an iron spoon using silver nitrate as

Levart [38]

The spoon should be connected to the negative terminal of the battery. The other electrode should be made of silver.

8 0

2 years ago

3. What molecule or ion acts as the nucleophile in the base-catalyzed reaction between acetic anhydride and vanillin? A. Vanilli

Effectus [21]

Answer:

B

A

C

Explanation:

3

B. Vanillin as a phenoxide ion (conjugate base)

4

B. Protonation of acetic anhydride

5

A. 1.97 mmol of vanillin and 8.45 mmol acetic anhydride

6

C. 1 mmol of vanillin and 10.6 mmol acetic anhydride

8 0

2 years ago

Using today's current price of gold - $1838.80 per troy ounce, how much are 5.17x1017 atoms of gold worth? (Hint: You will have

Zepler [3.9K]

Answer:

0.010 $.

Explanation:

Hello!

In this case, since 1 troy ounce equals 31.1 grams, we can compute the price of gold per gram first:

$1,838.80\frac{\$}{try\ ounce} * \frac{1try\ ounce}{31.1g} = 59.1\frac{\$}{g}$

Now, we need to compute the grams of copper in 5.17 x10¹⁷ atoms via the Avogadro's number:

$m=5.17x10^{17}atomsAu*\frac{197.0gAu}{6.022x10^{23}atomsAu} \\\\m=1.69x10^{-4}g$

Thus, the price is:

$\$ = 59.1\frac{\$}{g}*1.69x10^{-4}g \\\\\$ =0.010\$$

Best regards!

7 0

3 years ago

STATE TRUE OR FALSE

AfilCa [17]

<h2>Answer:</h2><h2>T.rue </h2><h2>False .</h2><h2>T.rue </h2><h2>F.alse </h2><h2>F.alse </h2><h2 />

6 0

2 years ago

Please help me ..If you don't have a question or something to say just comment don't steal my points . It's not fair. Here are t

astra-53 [7]

1.

$1.20 \: mol \times \frac{6.02 \times {10}^{23} }{1 \: mol} = 7.224 \times {10}^{23} atoms$

2.

$9.25 \times {10}^{25 \:} molecules \times \frac{1 \: mol}{6.02 \times {10}^{23} }$

$= 153.654485 \: moles$

3.

molar mass = 3(24.31) + 127.60 + 5(32.07)

molar mass = 360.88 g

4.

molar mass = 3(58.93) + 2(30.97) + 8(16.00)

molar mass = 366.73 g

5.

molar mass = 98.09

$125 \: g \times \frac{1 \: mol}{98.09 \: g} = 1.274339892 \: moles$

//

I'm too lazy to do the rest but you should get a general idea of how to do it.

Also, round as you wish!

3 0

2 years ago

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