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Bogdan [553]
3 years ago
15

An unknown element "x" can form a compound with the formula "x"br2. in which main group on the periodic table would element "x"

be found?
Chemistry
1 answer:
Hoochie [10]3 years ago
4 0
Group 2, or in the Alkaline Earth Metals section. This is due to the necessity to have a +2 charge to balance out or negate the -2 charge two Bromines carry.
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What is the molar mass off a substance?
ruslelena [56]
It is the mass of one mole of the substance.
4 0
3 years ago
According to Newton's Third Law, If one object exerts a force on a second object, the second object exerts a force on the first
blagie [28]

Equal in magnitude and opposite in direction.

3 0
2 years ago
Condensation is a process for which a. ΔG is negative at high temperature but positive at low temperature. b. ΔH and ΔS are nega
IgorC [24]

Answer:

b. ΔH and ΔS are negative at all temperatures .

Explanation:

During the process of condensation ,

The gaseous state convert to liquid state ,

Hence , the entropy of the system reduces , i.e. , the randomness decreases .

And the value for entropy is negative ,

hence ,

Δ S = negative ,

Δ H = negative ,

Since ,

The heat is releasing from system .

hence , the most appropriate option will be ΔH and ΔS are negative at all temperatures .

7 0
3 years ago
A marble rolls off horizontally from the edge of table top 1.50 m above the floor. it strikes the floor 2.0 m from the base of t
GrogVix [38]

a. t=0.553 s

b. vox(horizontal speed) = 3.62 m/s

<h3>Further explanation</h3>

Given

h = 1.5 m

x = 2 m

Required

a. time

b. vo=initial speed

Solution

Free fall motion

a. h = 1/2 gt²(vertical motion=h=voyt+1/2gt²⇒voy = 0)

\tt t=\sqrt{\dfrac{2h}{g} }

t = √2h/g

t = √2.1.5/9.8

t=0.553 s

b. x=vox.t(horizontal motion)

\tt x=v_{ox}\times t

vox=x/t

vox=2/0.553

vox=3.62 m/s

3 0
2 years ago
Which group of elements readily loses two electrons to form a compound?
nexus9112 [7]
The alkaline earth metals (the second group) because their ion charge is +2
8 0
3 years ago
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