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Annette [7]
3 years ago
6

Which of the following is true regarding a voltaic (or galvanic) cell? a) It can only be used with hydrogen. b) It produces elec

trical current spontaneously. c) It consumes electrical current to drive a nonspontaneous chemical reaction.
Chemistry
1 answer:
N76 [4]3 years ago
3 0

Answer:

b) It produces electrical current spontaneously.

Explanation:

Cells capable of converting chemical energy to electrical energy and vice versa are termed Electrochemical cells. There are two types of electrochemical cells viz: Galvanic or Voltaic cells and Electrolytic cells. Voltaic cell is an elctrochemical cell capable of generating electrical energy from the chemical reaction occuring in it.

The voltaic cell uses spontaneous reduction-oxidation (redox) reactions to generate ions in a half cell that causes electric currents to flow. An half cell is a part of the galvanic cell where either oxidation or reduction reaction is taking place. Hence, the spontaneous production of electric currents is true about Voltaic/Galvanic cells.

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You have an atom represented by X (not real by the way). X has 2 valence electrons. You have another atom Y that has 5 valence e
BabaBlast [244]

The chemical formula : X₃Y₂

<h3>Further explanation  </h3>

The noble gas element is a stable class of elements. The noble gas element is monatomic. Stability of noble gases is caused by an electron configuration that has a stable configuration of 8 (has 8 valence electrons) except He with a duplet configuration (has 2 valence electrons)

Other elements that do not yet have electron configurations such as noble gases will try to achieve their stability by forming bonds between elements.

This is generally called the octet rule

X has 2 valence electrons.to achieve stability, element X will release 2 electrons to form X²⁺

Y has 5 valence electrons, to achieve stability, the element Y will attract/ add electrons to form Y³⁻

The two compounds will form a compound with the charges crossed : X₃Y₂

6 0
4 years ago
Express 975,000 in scientific notation
kodGreya [7K]

9.75 x 10^5

A number in scientific notation has the form <em>a x 10^b</em> where

• a is the <em>coefficient</em>

• b is the <em>exponent</em>

Here are the steps to convert a number greater than 1 to scientific notation.

a) Find the coefficient

Put the decimal point after the first digit and drop the trailing zeroes

<u>9.75</u> 000

The coefficient is 9.75 .


b) Find the exponent

Count the number of digits after the first digit.

In 975 000 there are five digits after the 9. Therefore, the exponent is 5.

c) Write the number

We write 975 000 as 9.75 x 10^5.

5 0
4 years ago
Which symbol represents a type of radiation that has the same mass as an
sesenic [268]

Answer:

D.+1°e symbol represents a type of radiation that has the same mass as an electron and a positive charge.

4 0
2 years ago
Phosphorus has three electrons in its 3p sublevel and sulfur has four. Phosphorus should have the lower ionization energy but it
Nadya [2.5K]

Answer:

B

Explanation:

First of all it is important to know that a half filled orbital is particularly stable. In phosphorus all the electrons occur singly in the 3p sublevel minimizing inter electronic repulsion hence it is more difficult to remove an electron from this energetically stable arrangement. In sulphur, electrons are paired in one of the 3p orbitals thereby lowering the energy of that level due to instability caused by interelectronic repulsion between two electrons in the same orbital.

8 0
3 years ago
Displacement is 17 m<br> east; distance is 17 m
Butoxors [25]

Answer:

Absolutely correct

Explanation:

Displacement is vector i.e. it deals with magnitude and direction WHILE Distance is scalar i.e. it only deals with magnitude

4 0
3 years ago
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