1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
romanna [79]
3 years ago
10

When comparing the two elements Br and Ga, the larger element is GaG a When comparing the two elements Br and Ga, the larger ele

ment is blank based on periodic trends alone. True or false?
Chemistry
1 answer:
dedylja [7]3 years ago
4 0

Answer:

FALSE

Explanation:

Br is <em>bromine</em> with atomic number 35, mass number of 79.904 and belongs to the group 7 elements known as the halogens.

Ga is <em>gallium</em> with atomic number 31, mass number of 69.72 and belongs to the alkaline earth metal i.e the group 3 elements.

From the above and in terms of their mass number, it is evident that Br is the larger element compared to Ga which is lesser than Br. Hence the statement is FALSE

You might be interested in
What are the two sources of energy for the Earth system?
lozanna [386]
The 2 sources are solar and nuclear energy.
3 0
2 years ago
Which of these is a chemical property of a substance?
Ghella [55]
Flamability boiling point color

3 0
3 years ago
Read 2 more answers
A particle with a charge of 9.40 nC is in a uniform electric field directed to the left. Another force, in addition to the elect
juin [17]

Answer:

a. Work done by the electric force = -2.85 * ×10⁻⁵ J

b. The potential of the starting point with respect to the end point = -3.03 * 10³ V

c. The magnitude of the electric field is 33.7kV/m

Explanation:

Given.

Charge = Q = 9.40 nC

Distance = d = 9.00 cm = 0.09m

Amount of work = 7.10×10⁻⁵ J

Kinetic energy = K = 4.25×10⁻⁵ J

a. What work was done by the electric force?

This is calculated by; change in Kinetic Energy i.e. ∆KE

∆KE = ∆K2 - ∆Kæ

Where K2 = 4.25×10⁻⁵ J

The body is released at rest, so the initial velocity is 0.

So, K1 = 0

Also, total work done = W1 + W2

Where W2 = 7.10×10⁻⁵J

So, W1 + W2 = W = K2

W1 + 7.10×10⁻⁵ = 4.25×10⁻⁵

W1 = 4.25×10⁻⁵ - 7.10×10⁻⁵

W = -2.85 * ×10⁻⁵ J

Work done by the electric force = -2.85 * ×10⁻⁵ J

b. What is the potential of the starting point with respect to the end point?

The change in potential energy is given as

W = ∆U

W = Q|V2 - V1| where V1 = 0 because the body starts from rest

So, W = QV2

Make V the Subject of the formula

V2 = W/Q

V2 = -2.85 * ×10⁻⁵ J / 9.40 nC

V2 = -2.85 * ×10⁻⁵ J / 9.40 * 10^-9C

V2 = −3031.9148936170212765957V

V2 = -3.03 * 10³ V

The potential of the starting point with respect to the end point = -3.03 * 10³ V

c. What is the magnitude of the electric field?

The magnitude of the electric field is calculated as follows;

W = -Fd = -QEd

And E = V/d

E = -3.03 * 10³ V / 0.09 m

E = −33687.943262411347517730 V/m

E = -33.7kV/m

The magnitude of the electric field is 33.7kV/m

4 0
3 years ago
Covalent compounds do not conduct electric current in a water solution well because they _____.
siniylev [52]
Covalent compounds do not conduct electric current in a water solution well because they do not dissociate into ions.
5 0
3 years ago
Read 2 more answers
Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 4.90 moles of magnesium perchlorate, Mg(ClO4)2.]\
Leviafan [203]

Answer:

 4.90  moles of  Mg(ClO_4)_2   will produce  (9.8) moles of  Cl^{-} ,

                                                    (4.90) moles of Mg^{2+} and

                                                    (39.2) moles of  O^{2-}

Explanation:

From the question we are told that

  The number of moles of  is  n =  4.90  \ mols

The formation reaction of Mg(ClO_4)_2  is

             Mg^{2+} + 2 Cl^{-} + 8O^{2+} \to Mg(ClO_4)_2  

From the reaction we see that

   1 mole of  Mg(ClO_4)_2  is formed by 2 moles of Cl^{-} 1 mole of  Mg^{2+} and 4  O^{2-}

 This implies that

   4.90  moles of  Mg(ClO_4)_2   will produce  (2 * 4.90) moles of  Cl^{-} ,

                                                    (1 * 4.90) moles of Mg^{2+} and

                                                    (8 * 4.90) moles of  O^{2-}

So

  4.90  moles of  Mg(ClO_4)_2   will produce  (9.8) moles of  Cl^{-} ,

                                                    (4.90) moles of Mg^{2+} and

                                                    (39.2) moles of  O^{2-}

                           

4 0
2 years ago
Read 2 more answers
Other questions:
  • Which observation does not indicate that a chemical reaction has occurred?
    13·1 answer
  • Which statement about spontaneous and nonspontaneous processes is correct? Spontaneous processes are favored by a decrease in H,
    13·2 answers
  • Determine the average rate of decomposition of h3po4 between 10.0 and 40.0 s. express your answer with the appropriate units.
    6·1 answer
  • The New Deal was created under the Roosevelt administration and included components like the Civilian Conservation Corps, Works
    15·2 answers
  • Complete and balance the precipitation reactions. Include physical states. Refer to the solubility rules as necessary. precipita
    14·1 answer
  • In an atom of barium, how many electrons have: <br> ℓ = 0<br><br> mℓ = 1
    12·1 answer
  • How long would it take to reduce 1 mole of each of the following ions using the current indicated? Assume the voltage is suffici
    7·1 answer
  • What is the half life of the element in the picture<br><br> HELP BRAINLIEST
    15·1 answer
  • What is the speed of sound in dry air at 20°C?
    7·1 answer
  • Come up with 2 examples of derived units from everyday life.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!