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
Aliun [14]
3 years ago
7

Evaluate the exponential expression (−2)6.

Chemistry
1 answer:
Olegator [25]3 years ago
6 0

A general exponential expression is something like:

A^n

This means that we need to multiply the number A by itself n times.

Using that we will get (-2)^6 = 64

With that definition, we can rewrite:

(-2)^6 = (-2)*(-2)*(-2)*(-2)*(-2)*(-2)

So we just need to solve the above expression.

Also, remember the rule of signs:

(-)*(-) = (+)

We will get:

(-2)*(-2)*(-2)*(-2)*(-2)*(-2) =  [(-2)*(-2)]*[(-2)*(-2)]*[(-2)*(-2)]

                                        =  4*4*4 = 16*4 = 64

Then we got:

(-2)^6 = 64

If you want to learn more, you can read:

brainly.com/question/17172630

You might be interested in
I am a metal that has 3 valence electrons and 123 neutrons
zlopas [31]

Answer:

The answer is Boron

Explanation:

3 0
3 years ago
47.0ml of a HBr solution were titrated with 37.5ml of a 0.215M LiOH solution to reach the equivalence point. what is the molarit
faltersainse [42]

Hello!

The molarity of the HBr solution is 0,172 M.

Why?

The neutralization reaction between LiOH and HBr is the following:

HBr(aq) + LiOH(aq) → LiBr(aq) + H₂O(l)

To solve this exercise, we are going to apply the common titration equation:

M1*V1=M2*V2

M1=\frac{M2*V2}{V1}= \frac{0,215 M * 37,5 mL}{47 mL}=0,172 M

Have a nice day!

4 0
4 years ago
Why do different elements make different color flames when you burn them?
Dovator [93]
When you heat an atom, some of its electrons are "excited* to higher energy levels. When an electron drops from one level to a lower energy level, it emits a quantum of energy. ... The different mix of energy differences for each atom produces different colours. Each metal gives a characteristic flame emission spectrum.
7 0
3 years ago
Why is a kite flying in the sky an example of potential energy?
Alenkinab [10]
The answer is b because the wind exerts a force on the kite
6 0
4 years ago
At a given temperature, the elementary reaction A − ⇀ ↽ − B , in the forward direction, is first order in A with a rate constant
ZanzabumX [31]

Answer:

0.24

Explanation:

We are given that

Rate constant for A=k=0.0180/s

Rate constant for  B,k'=0.0750/s

We have to find the value of equilibrium constant for the reaction

A\rightleftharpoons B

Equilibrium constant, for k=\frac{k}{k'}

Using the formula

k=\frac{0.0180}{0.0750}=0.24

Hence, the value of the equilibrium constant for the reaction

A\rightleftharpoons B at this temperature=0.24

4 0
3 years ago
Other questions:
  • I have attached all the problems, but really if you just do one so I understand how to do it, that would be great!
    13·1 answer
  • How many atoms of oxygen are in one formula unit of Al2(SO4)3
    10·2 answers
  • Please help! The answer has to have a decimal notation​
    15·1 answer
  • When comparing elements in the same column of the periodic table, which factor- distance or the number of protons seems to be th
    10·1 answer
  • Chapter 2.4.1. The ______ energy lost by the inward movement of nickel-iron within a differentiating molten planetary body would
    10·1 answer
  • What is the number of moles in .025g (NH4)2Cr2O7?
    11·1 answer
  • Rank the four gases (air, exhaled air, gas produced from the decomposition of H2O2, gas from decomposition of NaHCO3) in order o
    13·1 answer
  • In the Haber process, nitrogen (N2) and hydrogen (H2) are directly combined to form ammonia (NH3). Which illustration contains t
    5·1 answer
  • The outer surface of a steel gear is to be hardened by increasing its carbon content; the carbon is to be supplied from an exter
    7·1 answer
  • Which of the following colors is/are produced when white light from sun is passed through a prism?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!