the number of electrons in the outer ring of the elements phosphorus, potassium, oxygen, iodine, gold, bromine, sulfur, and cobalt?

Answers

Answer 1

Answer: Phosphorus = 5
Potassium = 1
Oxygen = 6
Iodine = 7
Gold = (a transition metal)
Bromine = 7
Sulfur = 6
Cobalt = (a transition metal)

For future reference, look at the group number along the top, it tells you :)

Answer 2

Answer:

Answer: I think its c (germanium)

Explanation:

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The atomic mass of titanium is 47.88 atomic mass units. This atomic mass represents the - explain please!

Answers

Okay, let's get this organized.

Nucleus
↓↓↓↓
Holds the Protons and Neutrons

Orbitals
↓↓↓↓
Electrons

Protons ⇒ Positive particle
Electrons ⇒ Negative charged particles
Neutrons ⇒ No charge

Atomic number → Number of protons in the nucleus
Atomic mass → Protons + neutrons

Answer: The atomic mass of titanium is 47.88 atomic mass units. This atomic mass represents the number of protons plus neutrons in the atom's nucleus.

A transformer has a primary voltage of 115 V and a secondary voltage of 24 V. If the number of turns in the primary is 345, how many turns are in the secondary? A. 1,653
B. 690
C. 72
D. 8

Answers

There are numerous information's of immense importance already given in the question.
Primary voltage of the transformer (V1) = 115 V
Secondary voltage of the transformer (V2) = 24 V
Number of turns in the primary (T1) = 345
Let us assume the number of turns in the secondary = T2
Then
(V1/V2) = (T1/T2)
(115/24) = 345/T2
115T2 = 345 * 24
115 T2 = 8280
T2 = 8280/115
= 72
So the correct option among all the options given in the question is option "C".

Answer:

The is 1653

Explanation:

Primary Voltage = # of turns in primary

Secondary Voltage # of turns in secondary

115 V = 345

24 V # of turns in secondary

115\25=4.79167

4.79167 = 345

# of turns in secondary

4.79167 * 345 = 1653.12

When rounded 1653

Rank cesium, chlorine, and chromium in order of increasing electron affinityA) Cs < Cr < Cl
B) Cl < Cr < Ce
C) Ce < Cl < Co
D) Ca < Cu < Cl

Answers

The correct answer is A. Cesium has the lowest electron affinity among the three while Chlorine has the highest.

The part of the atom that carries a positive charge is the _____, and the part that carries a neutral charge is the _____.neutron; proton
electron; proton
proton; electron
proton; neutron

Answers

Answer : Option D) Proton and Neutron.

Explanation : The part of the atom that carries a positive charge is the proton, and the part that carries a neutral charge is the neutron.

A proton is a small subatomic particle, denoted by symbol $p or p^(⁺)$ , with a positive electric charge of +1 e elementary charge and a mass which is slightly less than that of a neutron. It is located at the center o atomic nucleus along with neutron. The number of protons are equal to the number of electrons of that atom but are in opposite charges.

A neutron is a subatomic particle of an atom which is of the same mass as that of proton but without an electric charge, it is present in all atomic nuclei except those of ordinary hydrogen. It is also located at the center of an atomic nucleus.

Proton; neutron
Protons have a positive charge
Neutrons are neutral
Electrons have a negative charge :)

An aluminum sample has a mass of 80.1 g and a density of 2.70g/cm3 . According to the date to what number of significant figures should the calculate volume of the aluminum sample be expressed?

Answers

80.1 g* (1 cm^(3)/ 2.70 g)= 29.666666... cm^(3).

The calculated volume should have 3 significant figures, so the final answer is 2.97*10^(1) cm^(3)

Hope this helps~

3 Sig figs because both measurements have three sig figs. In a lab setting, you would round to your least precise measurement. So its useless to use a meter stick and a high precision scale to take measurement because you have to use the amount of Sig figs for your least precise tool

Hanna hypothesizes that granite is denser than sandstone. How can Hanna test her hypothesis?

Answers

To test if the hypothesis is correct, a good way is to think of it this way:
Density = mass/volume, right?
Calculate the mass and volume of each and do the equation; this will test your hypothesis.
You will be left with the density of each. But, make sure that the sample sizes are the same (controlled variable) otherwise it will be an unfair test.

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