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kkurt [141]
3 years ago
15

Which element(s) are not balanced in this equation?

Chemistry
2 answers:
zhenek [66]3 years ago
8 0
The correct response would be A. Only the Fe is unbalanced, all of the other elements are balanced.
IRINA_888 [86]3 years ago
6 0
Check every element at both sides

Element      left side      right side   conclusion

Fe                2                1                not balanced
O                3+3=6          3*2=6        balanced
C                3                  3                balanced

Answer: only Fe is unbalanced (2 atoms at the left side and 1 atom at the right side)

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Identify the products in the following chemical resction 2NaHCO3 + CaCI2 --> CaCO3 + CO2 + 2NaCI + H2O​
Radda [10]

the products are:

CaCO3 Calcium Carbonate

CO2 carbon dioxide

NaCI Sodium chloride

H2O​ Water

8 0
3 years ago
Which atom, selenium (Se) or Arsenic (As), has the higher electron affinity and why?
IrinaVladis [17]

Answer:

5. Selenium, because it does not have a stable, half-filled p subshell and adding an electron does not decrease its stability.

Explanation:

Electron affinity is the amount of energy released when an isolated gaseous atom accepts electron to form the corresponding anion.

Selenium:-

The electronic configuration of the element is:-

[Ar]3d^{10}4s^24p^4

Arsenic:-

The electronic configuration of the element is:-

[Ar]3d^{10}4s^24p^3

The 4p orbital in case of arsenic is half filled which makes the element having more stability as compared to selenium.

Thus, selenium has higher electron affinity because adding electron does not decrease the stability as in case of arsenic.

8 0
3 years ago
Calculate the volume of a sample of aluminum that has a mass of 3.057 kg. The density of aluminum is 2.70 g/cm3 (taking into con
Misha Larkins [42]

Answer:

v = 1130 cm³

Explanation:

Given data:

Volume of sample = ?

Mass of Al sample = 3.057 Kg (3.057 Kg× 1000g/1 Kg = 3057g)

Density of Al sample = 2.70 g/cm³

Solution:

Formula:

d = m/v

d = density

m = mass

v= volume

by putting values

2.70 g/cm³ = 3057g /v

v = 3057g /2.70 g/cm³

v = 1130 cm³

3 0
3 years ago
Which property is shared between liquids that are used in thermometers.
miv72 [106K]

Answer:

the property that is shared between liquids us called thermometric property your welcome

8 0
2 years ago
Unsweetened chocolate has a very bitter taste. What does this taste indicate about
Free_Kalibri [48]

Answer:

C. They are basic

8 0
3 years ago
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