Balance the following equations and write the corresponding ionic and net ionic equations (if appropriate):

Question 1 (1 point)

andrezito [222]

Answer:

True 
B. 24 hours 
Light and Dark 
A. To spin on an Axis 
True 
Nearest P0INTS 
B. 365 days 
True 
A. January 
B. July 
Summer 
B. The tilt of the Earth on its axis
True 
¿-¿
¿-¿
B. June
A. September 
B. December and March

Explanation:

Sorry yan lang alm but I hope it helps

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5 0

3 years ago

Un elemento posee dos isótopos cuyos números de masa suman 68 y la semisuma de sus neutrones es 19. Determine el grupo de este e

katovenus [111]

Answer:

The element belongs to group 15 of the present periodic table

Explanation:

Isotopes have the same proton number, what differs is that they have different number of neutrons.

Now since the half-sum of their neutrons is 19, the total number of neutrons would be 19 * 2 = 38 neutrons.

Also, their masses add up to be 68, since the total mass equals sum of neutrons and sum of protons, this means that the total number of protons is 68-38 = 30

Since this is equal in both isotopes, this means that the proton number of the element is 30/2 = 15

The atomic number is the number of protons in the nucleus of an atom. Since the atomic number is 15, this element is phosphorus and it belongs to group 15 of the present periodic table

5 0

3 years ago

What is the amount of space occupied by a sample of matter

dusya [7]

The amount of space that matter occupies is called its volume. Solids, liquids, and gases all have volume.

3 0

2 years ago

Which would most likely be joined by an ionic bond?

sertanlavr [38]

b) a positive metal ion and a negative nonmetal ion.

Because generally ions of non-metal elements (such as the halogens) are negatively charged while ions of metal elements (such as the alkali earth metals) are positively charged. The differences in their changes causes strong electrostatic attraction (an ionic bond).

4 0

3 years ago

What makes acids and bases stronger? Are the strengths of acids and bases related to concentration or dissociation? Why or why n

Degger [83]

I’m pretty sure it not it can you elaborate

7 0

3 years ago