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olchik [2.2K]
3 years ago
8

Which of the following statements is true? Running an electric current through a magnet can create a magnetic field. Electric en

gines change electricity into magnetism. The strength of a magnetic field increases with distance. Electrons are found in the nucleus of an atom.
Chemistry
2 answers:
malfutka [58]3 years ago
7 0

Answer:

A-Running an electric current through a magnet can create a magnetic field.

Explanation:

The answer is A-Running an electric current through a magnet can create a magnetic field. I chose B and got it wrong on my test. The correct one is A

r-ruslan [8.4K]3 years ago
6 0

Electric engines change electricity into magnetism

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How many moles of tungsten (W,183.85 g/lol are in 415 grams of tungsten?
vladimir1956 [14]

Given mass of tungsten, W = 415 g

Molar mass of tungsten, W = 183.85 g/mol

Calculating moles of tungsten from mass and molar mass:

415 g * \frac{1 mol}{183.85 g} = 2.26 mol W

7 0
2 years ago
An atom's Lewis dot structure has four dots. Which of the following elements could it be, and why?
Elis [28]

Answer:

Beryllium, because it is in period 2 and has four total electrons.

Explanation:

7 0
3 years ago
The circles in the diagrams below represent energy levels in an atom, and the arrows show electron (blue dot) transitions from o
Hoochie [10]
Ranking of the atom from highest to lowest is as follows:
Highest
Arrow = from outer edge to center
2nd Highest
Arrow = second closest ring to the outer edge to center
3rd Highest
Arrow = middle circle to center
Lowest
Arrow = outer edge to middle circle

6 0
3 years ago
What is the difference between a positive and negative ion?
ra1l [238]
Positive ions or molecules that have lost one or more electrons where negative ions are actually oxygen atoms with extra negatively charged electrons.
5 0
3 years ago
450g of chromium (III) sulfate reacts with excess potassium phosphate. How many grams of potassium sulfate will be produced? (AN
Oduvanchick [21]

Answer:

599.26 grams of potassium sulfate will be produced.

Explanation:

Cr_2(SO_4)_3(aq)+2K_3PO_4(aq)\rightarrow 2CrPO_4(s)+3K_2SO_4(aq)

Moles of chromium (III) sulfate = \frac{450 g}{392 g/mol}=1.1480 mol

According to reaction, 1 mole of chromium (III) sulfate gives 3 moles of potassium sulfate.

Then 1.1480 moles of chromium (III) sulfate will give:

\frac{3}{1}\times 1.1480 mol=3.4440 mol

Mass of 3.4440 moles of potassium sulfate:

= 3.4440 mol × 174 g/mol = 599.26 g

599.26 grams of potassium sulfate will be produced.

8 0
3 years ago
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