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Alex17521 [72]
4 years ago
11

How much does a gold bar wiegh and how much is it wotrth

Chemistry
1 answer:
Katena32 [7]4 years ago
3 0
It depends on the gold bar.  Gold bars come in all diferent sizes.  However how much its worth depends on how big it is.  Gold is $1,320 per ounce.
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3. Hydrogen reacts with nitrogen to produce ammonia according to the equation:
lys-0071 [83]

Mass of ammonia produced : 121.38 g

<h3>Further explanation</h3>

Given

Reaction

3H₂(g) + N₂(g) ⇒ 2NH₃(g)

100g of N₂

Required

Ammonia produced

Solution

mol of N₂ :

\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{100}{28}\\\\mol=3.57

From the equation, mol ratio of N₂ and NH₃ = 1 : 2, so mol NH₃ :

\tt \dfrac{2}{1}\times 3.57=7.14~moles

mass of NH₃(MW=17 g/mol) :

\tt mass=mol\times MW\\\\mass=7.14\times 17\\\\mass=121.38~g

8 0
3 years ago
The dust particles in water can be helped to settle down faster by
Korolek [52]
The dust particles in the water can be helped to settle down faster by Alum.

So, your answer is option B. Alum.

Hope this helps!
6 0
3 years ago
Classify these substances as acidic, basic, or neutral: vinegar, baking soda, tomato juice, sugar. A) vinegar-acidic Baking soda
Gnesinka [82]

Answer:

A) vinegar-acidic Baking soda-basic Tomato juice-acidic Sugar-neutral.

Explanation:

Hello,

In this case, it is widely acknowledged that vinegar is a diluted and processed form of acetic acid which is of course acidic as well as tomato juice which has a pH of about 4.2. Baking soda, which is chemically known as sodium bicarbonate has a pH greater than 7, for that is reason it is basic. Finally, sugar, is known by its neutrality, for which its pH is about 7, for that reason it is neutral. In such a way, answer is A) vinegar-acidic Baking soda-basic Tomato juice-acidic Sugar-neutral.

Regards.

4 0
3 years ago
Q2. Which of the following molecules may show.
jonny [76]

Answer:

I think is answer

CH3cl3

5 0
3 years ago
How many atoms of h are in 1 mol of (nh42so4?
dem82 [27]
1 mole of NH42SO4 contains 42 moles of H. We take the 42 moles of H and multiply that times Avogadro's number (6.02x10^23) and get 2.5284x10^25 atoms of hydrogen
8 0
3 years ago
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