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podryga [215]
3 years ago
8

How many moles are in 1.2×10^3 grams of ammonia

Chemistry
1 answer:
yuradex [85]3 years ago
6 0
Ammonia is NH3. The molar mass of NH3 is 17.0307g.

(1.2*10^3)/17.0307=70.46 moles of NH3.

If you are using significant figures, it is 70. moles of NH3.
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Harold Reese must choose between two bonds: Bond X pays $95 annual interest and has a market value of $905. It has 13 years to m
Serga [27]

Answer:

Explanation:

a)

current yield of bond x = annual interest/market value

current yield of bond x = 95/905

current yield of bond x = 10.50%

current yield of bond Z = annual interest/market value

current yield of bond Z = 85/910

current yield of bond Z = 9.34%

b)

Bond X should be selected based on current yield

c)

<u>Bond Z </u>

Approximate yield to maturity = (Annual Coupon + (Maturity value - Current price)/period)/ ( (Maturity value+ Current price)/2)

Approximate yield to maturity = (85+ (1000-910)/5)/((1000+910)/2)

Approximate yield to maturity = 10.79%

Exact yield to maturity = rate(nper,pmt,pv,fv)

Exact yield to maturity = rate(5,85,-910,1000)

Exact yield to maturity = 10.93%

d)

Yes ,  answer would changed between parts b and c of this question as  A drawback of current yield is that it does not consider the total life of the bond .

8 0
3 years ago
Draw two amino acids – note the amino group, the carboxyl group and the alpha carbon, circle the water molecule to be removed an
larisa86 [58]

The two Amino Acids drawn are;

                        1) Proline  (Red)

                         2) Histidine (Blue)

The <em>Carboxylic Groups </em>are encircled in Yellow Sphere.

The <em>Amino Groups</em> are encircled in Orange Spheres.

The <em>Alpha carbons</em> are encircled in Pink spheres.

The <em>water molecule</em> evolved is in corresponding colors of its parent molecules.

The<em> peptide bond</em> formed is colored by Green color.

7 0
3 years ago
Which molecule is butyne?
postnew [5]

Answer:

The answer is B.

Explanation:

A P E X

5 0
3 years ago
Displacement reaction between copper and silver nitrate solution produces silver and copper (II) nitrate solution. Write the che
xxMikexx [17]

Answer:

Cu   +   2AgNO₃    →   2Ag   +  Cu(NO₃)₂

Explanation:

We are to give the reaction expression for this displacement reaction.

 Reactants  = copper and silver nitrate solution

 Products  = silver and copper (II) nitrate

Copper  = Cu

 Silver nitrate solution  = AgNO₃  

Silver  = Ag

copper (II) nitrate  = Cu(NO₃) ₂

So:

         Cu   +   2AgNO₃    →   2Ag   +  Cu(NO₃)₂

3 0
3 years ago
Why is water a pure substance.
Helen [10]

Explanation:

water is a pure substance because it only contains one type of molecule.

6 0
2 years ago
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