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alisha [4.7K]
3 years ago
15

A. what mass of chromium would be produced from the reaction of 57.0 g of potassium with 199 g of chromium (ii) bromide accordin

g to the following reaction?
b. which reactant is in excess and how many grams of this reactant are left over ?
2k + CrBr2 -> 2kbr + cr
Chemistry
1 answer:
Sunny_sXe [5.5K]3 years ago
5 0

Answer:

2 K + 1 CrBr2 yield 2 KBr + 1 Cr

Explanation:

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(AKS 2e) Group 2 metals bond with nonmetals or polyatomic ions. What question
Lyrx [107]

Answer:

Will group 2 elements lose electrons to bond with nonmetals in group 17 in a

1:2 ratio?

Explanation:

Metals are electropositive in nature. This means that they loose electrons. Thus, metals form ionic bonds by loosing electrons to non metals.

Elements of group 2 have a valency of 2 while those of group 17 has a valency of 1 so the ratio in which group 2 elements bond with elements of group 17 is 1:2. Hence the answer.

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Balance for me <br><br> C6H6+O2=CO2+H2O
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The answer is 2 15 12 6
hope this would help you
3 0
3 years ago
What is the name of this acid: H3P ?
fiasKO [112]

Answer:

phosphoric acid

Explanation:

7 0
3 years ago
A 5.20 mol sample of solid A was placed in a sealed 1.00 L container and allowed to decompose into gaseous B and C. The concentr
ELEN [110]

Answer:

2.60 moles of A remaining.

Explanation:

According to  Le Chatelier's principle, the equilibrium would shift if the volume, concentration, pressure, or temperature changes.

In this question, we were told that  the volume doubles, that implies that we would have to double the molarity of B/ C (since B=C.)

However, it is obvious and clear from the given equation of the reaction that  A is  solid in it's activity = 1. Hence, it is then ignored.

So doubling B would be 1.30 M × 2 = 2.60 M

i.e 2.60 M moles of A was consumed.

Now;  the number of moles of A remaining  is 5.20 - 2.60 = 2.60 moles of A remaining.

5 0
3 years ago
HELP NO LINKS!!<br><br> The number in the box is _____ and this is a form of ______ decay.
gogolik [260]

Answer:

Hope this helps:)

Explanation:

Your exercise:     Step by step:

 

1*225/88*r*a=1*(0/-1)*e+1*(__/88)*r*a  | If the numerator equals zero, the fraction will be zero

1*225/88*a*r=1*0*e+1*(__/88)*r*a  | Multiply 0 by e. Any number multiplied by 0 is 0.

1*225/88*a*r=0+1*__/88*r*a  | Multiply __/88 by a. You can multiply a fraction by a number by multiplying the number and the numerator.

1*225/88*a*r=0+1*__*a*a*r  | Multiply (__*a)/88 by r. You can multiply a fraction by a number by multiplying the number and the numerator.

1*225/88*a*r=0+1*(__*a*r)/88  | · 88

1*225*a*r=88*(__*a*r)/88  | Multiply 88 by (__*a*r)/88. You can multiply a fraction by a number by multiplying the number and the numerator.

225*a*r=88*(__*a*r)/88  | Cancel (__*88*a*r)/88 with 11*2^3

225*a*r=(__*a*r)/1  | Numerator 1 of (__*a*r)/1 can be omitted .

225*a*r=1*__*a*r  | : 225

1*a*r=1*__*0.004*a*r  | Divide both sides by a .

1*r=1*(__*0.004*a*r)/a  

5 0
3 years ago
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