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3 years ago

Which term represents a type of nuclear reaction?

Chemistry

2 answers:

wel3 years ago

7 0

D)natural transmutation

nexus9112 [7]3 years ago

3 0

Which term represents a type of nuclear reaction?<span>a) condensation
b)vaporization
c)single replacement
d)natural transmutation</span>

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A conclusion in science states whether or not a hypothesis is correct<br> or not?

Fantom [35]

Answer:it do not states

Explanation:

3 0

4 years ago

If you tried forming an ionic bond between sodium and aluminum, would it work? Why? (please help! this is for a friend)

sineoko [7]

Answer:

The answer to your question is No

Explanation:

Ionic bonding is a kind of bonding that involves the attraction between oppositely charged ions. That means that one element must have a positive charge and the other a negative charge.

Also, the difference in electronegativity of both elements must be higher than 1.7.

Both Sodium and Aluminum are positively charged then an ionic bond is not possible to be formed.

Difference of electronegativity = 1.61 (Al) - 0.93(Na)

= 0.63

To form an ionic bond the difference of electronegativity must be higher than 1.7.

3 0

3 years ago

The rate constant for the first-order decomposition of N2O5 (g) to NO2 (g) and O2 (g) is 7.48 * 10-3 s-1 at a given temperature.

alina1380 [7]

Answer:

Explanation:

In this problem, we have a first-order decomposition reaction with a given rate constant. The rate law for a first-order reaction like this is

[

]

, where k is the rate constant and [A] is the concentration of the reactant (renamed as A, for brevity). To find the dynamics of the reaction with time, we can integrate the rate law to get an expression for [A](t):

rate = −d[A]dt = k[A]

[A]f =[A]i e−kt

We want the total pressure of the reaction chamber to be 0.145 atm, with a starting reactant pressure of 0.110 atm. To solve for the time this reaction takes, we need the reaction equation:

2N2O5(g) → 4NO2(g) + O2(g)

Using the stoichiometry of the reaction equation, we can determine the final pressure of the reactant. This requires us to rewrite the total pressure equation in terms of the change in pressure of the reactant.

Pf=0.145atm

Pi=0.110atm = pN2O5

iPf =pN2O5

f +pNO2 + pO2pNO2 = 4pO2

This comes from the stoichiometry.

pNO2 = 2(pN2O5i − pN2O5f )

This comes from the stoichiometry.

pNO2 = −2ΔpN2O5Pf = (pN2O5i + ΔpN2O5) − 2ΔpN2O 5 − 12ΔpN2O5

0.145atm =(0.110atm + ΔpN2O5) − 2.5ΔpN2O5 = 0.110atm − 1.5ΔpN2O5

ΔpN2O5 = −0.0233atm

pN2O5f = 0.110atm − 0.0233atm =

0.0867atm

This is our final pressure! Now we can use the integrated rate law.

8 0

3 years ago

I need this answer ASAP! In order for conduction to transfer heat from one object to another, what must be true?

vampirchik [111]

Answer:

The objects should be far apart. There must be air circulation. The objects need to be touching. Solar energy is required.

Explanation:

6 0

3 years ago

Balance the following half-reaction: (acidic) VO2+(aq) → V3+(aq) Express your answer as a half-reaction. Identify all of the pha

ivolga24 [154]

Answer:

The balanced half reaction in an acidic medium is :

$VO^{2+}(aq)+2H^+(aq)+e^-\rightarrow V^{3+}(aq)+H_2O(l)$

Explanation:

$VO^{2+}(aq)\rightarrow V^{3+}(aq)$

While balancing the half-reaction in an acidic medium, we will first balance oxygen atoms by adding water:

1) Adding 1 water molecule on product side to balance oxygen atoms.

$VO^{2+}(aq)\rightarrow V^{3+}(aq)+H_2O(l)$

Now balance hydrogen atom by adding $H^+ ions$ .

2) Adding 2 hydrogen ions on reactant side to balance hydrogen atoms.

$VO^{2+}(aq)+2H^+(aq)\rightarrow V^{3+}(aq)+H_2O(l)$

Now balance the charge adding electrons on the side where positive charge is mor.

3) Adding 1 electrons on reactant side to balance charge of the overall reaction:

$VO^{2+}(aq)+2H^+(aq)+e^-\rightarrow V^{3+}(aq)+H_2O(l)$

The balanced half reaction in an acidic medium is :

$VO^{2+}(aq)+2H^+(aq)+e^-\rightarrow V^{3+}(aq)+H_2O(l)$

6 0

3 years ago