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
victus00 [196]
3 years ago
11

Compute 4.659×104−2.14×104. Round the answer appropriately.

Chemistry
1 answer:
erma4kov [3.2K]3 years ago
6 0
261.976 which rounds to 261.98(if rounding to the hundredths.
You might be interested in
What is the index of hydrogen deficiency of a compound with a molecular formula of c6h15n?
7nadin3 [17]

Answer:

IHD = 0

Explanation:

Given that

C₆H₁₅N

Number of carbon atoms(n) = 6

Number of hydrogen atoms(x') = 15

Number of nitrogen atoms = 1

There is nitrogen atoms then x = x' -1

The index of hydrogen deficiency given as

IHD=\dfrac{2n+2-x}{2}

So

IHD=\dfrac{2n+2-x}{2}

IHD=\dfrac{2\time 6+2-(15-1)}{2}

IHD = 0

The index of hydrogen deficiency is zero.

6 0
3 years ago
Identify the acid, base, conjugate acid and conjugate base in the following reactions:
Leni [432]

Answer:

a. NH₃ : base

CH₃COOH (acetic acid) : acid

NH₄⁺ : conjugate acid

CH₃COO⁻ : conjugate base

b. HClO₄ (perchloric acid) : acid

NH₃ : base

ClO₄⁻ : conjugate base

NH₄⁺ : conjugate acid

Hope this helps.

4 0
3 years ago
What happens to the composition of an atom to cause it to become positively or negatively charged?
cupoosta [38]
<span>The addition and subtraction of negatively charged electrons can easily change an atom’s charge, because they perpetually spin in valence shells outside the nucleus. It is easier for a neighboring atom to share or steal an electron rather than a positively charged proton, which is found in the nucleus. It requires a strong energy input to split a proton free from other protons and neutrons. thus, the atoms lose or gain electrons from neighboring ones and become what is known as "ions". Hope it helped!</span>
6 0
3 years ago
Physical Science pre-Test 2020-2021
poizon [28]

Answer:

exothermic I think

Explanation:

IM TWKIGN THE TEST

4 0
2 years ago
Unstable isotopes undergo radioactive decay. what occurs during radioactive decay?
mel-nik [20]
Here is what radioactive decay is:
<span>Radioactive decay is the spontaneous breakdown of an atomic nucleus resulting in the release of energy and matter from the nucleus. Remember that a radioisotope has unstable nuclei that does not have enough binding energy to hold the nucleus together.</span>
5 0
3 years ago
Other questions:
  • Ephedrine, a central nervous system stimulant, is used in nasalsprays as a decongestant. this compound is a weak organic base: {
    6·1 answer
  • How many ethyne molecules are contained in 84.3 grams of ethyne (C2H2)?
    14·2 answers
  • A beaker holds 962 g of a brine solution that is 6.20 percent salt. If 123g of water are evaporated from the beaker, how much sa
    15·1 answer
  • Although cannabinol and methyl alcohol are both alcohols, cannabinol is very slightly soluble in methyl alcohol at room temperat
    12·2 answers
  • Which property is NOT used to separate a mixture?
    12·1 answer
  • 13) State four factors that can disrupt the<br>balance of the ecosystem-<br><br>​
    14·2 answers
  • A beaker contains a small amount of baking soda. A few drops of hydrochloric acid are added to the baking soda. Fizzing and bubb
    12·1 answer
  • In which way does electricity flow in a DC circuit? *
    14·1 answer
  • Emma strikes a match and sets some logs on fire. As the fire burns, which two forms of energy are released?
    9·1 answer
  • What is the relationship between kinetic energy and mass?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!