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inysia [295]
3 years ago
6

(True or

Chemistry
1 answer:
marysya [2.9K]3 years ago
3 0
The eight-element periodicity found in the Periodic Table is related to the number of electrons in the outermost energy level of the atoms that make up each element 
this statement is true
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Which is a spectator ion in the reaction between these two solutions babr2 + na2so4?
Greeley [361]
Spectator  ion  are  ions  which   remain  unchanged  during  chemical  equation and  does  not  affect  equilibrium
chemical  equation  for  the  reaction  is as follows
  NaSO4   +Babr2  ---> 2  Nabr  +  BaSO4
ionic  equation   is  as  follows
Ba ^+2  +  SO^-2  --->BaSO4(s)
therefore  the spectator  ion  are Na+  and   Br-  ions
6 0
4 years ago
Read 2 more answers
You have a sample of each of the following five metals, with the mass and density
Sindrei [870]

Answer:

E) Silver, mass = 420 g, d = 10.5 g/cm.

Explanation:

Hello,

In this case, since the density is defined by:

\rho =\frac{m}{V}

Given the mass and density, we compute the volume via:

V=\rho *m

Thus, for each vase we have:

A) V=135g*2.7g/cm^3=364.5cm^3

B) V=305g*8.92g/cm^3=2720.6cm^3

C) V=240g*7.86g/cm^3=1886.4cm^3

D) V=75g*1.74g/cm^3=130.5cm^3

E) V=420g*10.5g/cm^3=4410cm^3

In such a way, the largest volume corresponds to E) Silver, mass = 420 g, d = 10.5 g/cm.

Best regards.

7 0
3 years ago
What size container should you use when mixing chemicals
NNADVOKAT [17]
My professor told me to use a 500ml beaker depending on what your mixing.
5 0
3 years ago
Why are the seasons for the southern hemisphere reversed from the northern hemisphere
MArishka [77]
Becuse the earth rotates the opisate way on the other side of the equator forgive me if im wrong.
5 0
4 years ago
What is the therm energy of an object?
Elan Coil [88]

Answer:

B

Explanation:

B. the total kinetic and potential energies of its particles

3 0
3 years ago
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