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3 years ago

Decay chains exist because

1 answer:

4 0

It occurs in a series of sequential reactions until a stable nucleus is reached because Nuclear decay occurs when the nucleus of an atom is unstable and spontaneously emits energy in the form of radiation.

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A solution of ammonia has a pH of 11.8. What is the concentration of OH– ions in the solution?

balu736 [363]

PH + pOH = 14

11.8 + pOH = 14

pOH = 14 - 11.8

pOH = 2.2

[OH-] = 10 ^- pOH

[OH-] = 10 ^- 2.2

[OH-] = 6.33 x 10^-3 M

Answer B

hope this helps!

3 0

3 years ago

Read 2 more answers

Can someone tell me how Antrax effects the body.

wel

The effects of Anthrax on the body include, shock, difficulty breathing, and intestinal inflammation. In serious cases, Anthrax can lead to inflammation of the areas surrounding the brain, and spinal cord, causing severe bleeding. This illness could also lead to death.
I hope this helps!

6 0

3 years ago

Read 2 more answers

What is the volume of 425g of ice if the density is 0.92g/mL

Sati [7]

Density=mass/ volume so you solve for volume and get 461.96 mL

6 0

3 years ago

Iron is extracted from iron oxide in the Blast Furnace: Fe 2 O 3 + 3 CO → 2 Fe + 3 CO 2

arsen [322]

a. mass of iron = 69.92 g

b. percent yield = 93%

<h3>Further eplanation </h3>

Percent yield is the compare of the amount of product obtained from a reaction with the amount you calculated

General formula:

Percent yield = (Actual yield / theoretical yield )x 100%

An actual yield is the amount of product actually produced by the reaction. A theoretical yield is the amount of product that you calculate from the reaction equation according to the product and reactant coefficients

Reaction

Fe₂O₃+3CO⇒2Fe+3CO₂

MW Fe₂O₃ : 159.69 g/mol

mol Fe₂O₃

$\tt \dfrac{100}{159,69}=0.626$

mol Fe₂O₃ : mol Fe = 1 : 2

mol Fe :

$\tt \dfrac{2}{1}\times 0.626=1.252$

mass of Fe(Ar=55.845 g/mol) :

$\tt 1.252\times 55.845=69.92~g$

actual yield = 65 g

theoretical yield = 69.92 g

percent yield :

$\tt =\dfrac{65}{69.92}=0.93=93\%$

8 0

3 years ago

. What is the mass of 23.56 moles of Glucose ples of Glucose - C6H1206?

GaryK [48]

Answer:

4244.48 g to the nearest hundredth.

Explanation:

The molar mass of Glucose = 6*12.011 + 12*1.008+ 6*15.999

= 180.156.

So 23.56 moles = 180.156 * 23.56 = 4244.48 g

8 0

3 years ago