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FromTheMoon [43]
3 years ago
6

Complete the chemical change. Na → Na+ a.)2e- b.)proton c.)1e-

Chemistry
2 answers:
statuscvo [17]3 years ago
5 0
C) 1e- is the answer because you need that in order to balance the charges
mestny [16]3 years ago
4 0

Answer:

The answer is c) 1e-

Explanation:

The chemical change is the loss of 1 electron (1 e-) in 1 atom of sodium (Na) to give a sodium cation (Na⁺). You have to put the electron in the cation side of the equation. In this way, the overall process is electrically neutral (1 positive charge is neutralized by 1 negative charge and the other side has not charges):

Na → Na⁺ + 1 e-

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Which of the following will affect the rate of a chemical reaction?
max2010maxim [7]

Answer:

solution concentration

Explanation:

Among the options given in the above question, solution concentration will affect the rate of a chemical reaction. This is because an increase in reagent concentration speeds up the reaction because there will be a greater number of reagent particles per unit volume, increasing the likelihood of effective collisions between them.

In addition to concentration, the factors that can influence the rate of a chemical reaction are temperature, catalyst, pressure and contact surface.

3 0
3 years ago
Read 2 more answers
Which barium nitrate solution requires the greatest moles of solute?
DochEvi [55]

Answer:

The answer to your question is: letter E,  1.77 L of 1.55 M Ba(NO3)2

Explanation:

Formula

Molarity = \frac{moles}{volume (L)}

moles = Molarity x volume (L)

a. 2.58 L of 0.0250 M Ba(NO3)2

moles = (0.025) (2.58)

moles = 0.065 M

b. 19.23 mL of 8.5 × 10−2 M Ba(NO3)2

moles = (8.5 x 10 ⁻²) (0.01923)

moles = 0.0016

c. No right answer.

d. 26.20 mL of 2.21 M Ba(NO3)2

 moles = (2.21)(0.0262)

moles = 0.058

e. 1.77 L of 1.55 M Ba(NO3)2

  moles = (1.55)(1.77)

  moles = 2.74            This solution needs the greatest concentration of

                                    Ba(NO₃)₂

6 0
3 years ago
What is the isotope formed during radioactive decay​
vodka [1.7K]

Answer: Except for gamma decay or internal conversion from a nuclear excited state, the decay is a nuclear transmutation resulting in a daughter containing a different number of protons or neutrons (or both). When the number of protons changes, an atom of a different chemical element is created.

Explanation:

6 0
2 years ago
A cup of hot water loses 265 cal
elixir [45]

Answer:

-1071 Joules

Explanation:

The Joule was introduced as the SI unit for energy in 1925.  One calorie is equal to approximately 4.184 joules(J).  This is a conversion factor that we can write two ways:

(1cal/4.184J) or (4.184J/1cal)

(265 cal)*(4.184J/1cal) = 1071 J

Since the energy is leaving the system, it should be written with a minus sign:  -1071J

7 0
2 years ago
If the pressure of a gas sample is quadrupled and the absolute temperature is doubled, by what factor does the volume of the sam
Natasha_Volkova [10]

Answer:

D) 1/2

Explanation:

Using Ideal gas equation for same mole of gas as

\frac {{P_1}\times {V_1}}{T_1}=\frac {{P_2}\times {V_2}}{T_2}

Given,

P₂ = 4P₁

T₂ = 2T₁

Using above equation as:

\frac {{P_1}\times {V_1}}{T_1}=\frac {{P_2}\times {V_2}}{T_2}

\frac {{P_1}\times {V_1}}{T_1}=\frac {{4\times P_1}\times {V_2}}{2\times T_1}

V_2=\frac{1}{2}\times V_1

<u>The volume change by half of the original.</u>

7 0
3 years ago
Read 2 more answers
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