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2 years ago

6

Determine the identity of an unknown element X using the given table and following clues: I) Element X is a solid II) Element X

will bond ionically with element C in a 1:1 ratio. III) As a positive ion, it will have the same number of electrons as argon.

2 answers:

klasskru [66]2 years ago

6 0

The answer is calcium. I just did it and it was correct

bogdanovich [222]2 years ago

4 0

The answer here is cleary Calcium.

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Which would you rather have generating electricity for your city: nuclear fission reactions (traditional nuclear power), nuclear

Arada [10]

Answer:

Fossil Combustion Reactions

Explanation:

It's more efficient (I'll edit later)

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2 years ago

Why is plate tectonics a widely accepted theory?

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2 years ago

A 103 kg horizontal platform is a uniform disk of radius 1.71 m and can rotate about the vertical axis through its center. A 68.

Andreyy89

Answer:

$I_{total}=220.64 kg*m^{2}$

Explanation:

The moment of inertia of the system is equal to the each population and the platform inertia so

Inertia disk

$I_{disk}=\frac{1}{2}*m_{disk}*(r_{p})^{2}$

Inertia person

$I_{p}=\frac{1}{2}*m_{p}*(r_{p})^{2}$

Inertia dog

$I_{d}=\frac{1}{2}*m_{d}*(r_{d})^{2}$

The Inertia of the system is the sum of each mass taking into account that all exert the force of inertia:

$I_{total}=I_{disk}+I_{p}+I_{d}$

$I_{total}=\frac{1}{2}*103kg*(1.71)^{2}+\frac{1}{2}*68.9kg*(1.09)^{2}+\frac{1}{2}*27.7kg*(1.45)^{2}$

$I_{total}=220.64 kg*m^{2}$

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2 years ago

Find the force between 2C and -1C separated by a distance 1m. Indicate if it is an attractive force (negative) or a repulsive fo

telo118 [61]

Answer:

Explanation:

Its definitely an Attractive force since the two charges are Unlike.

From Coulombs Law

F=kq1q2/R²

Given

K=9x10^9

R=1m

q1=2C

q2=-1C

F=(9x10^9 x 2 x -1)/1²

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2 years ago

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GarryVolchara [31]

Answer:

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2 years ago