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
postnew [5]
3 years ago
15

What is true about energy

Chemistry
1 answer:
gogolik [260]3 years ago
6 0
Can not be created or destroyed
You might be interested in
Which of the following elements has the lowest first ionizition energy ?
Hatshy [7]

Answer:

I think Mg is correct I am not sure

5 0
2 years ago
Read 2 more answers
you have been observing an insect that defends itself from enemies by secreting a caustic liquid. analysis of the liquid shows i
Alexus [3.1K]

pH of the buffer solution is 1.76.

Chemical dissociation of formic acid in the water:

HCOOH(aq) ⇄ HCOO⁻(aq) + H⁺(aq)

The solution of formic acid and formate ions is a buffer.

[HCOO⁻] = 0.015 M; equilibrium concentration of formate ions

[HCOOH] + [HCOO⁻] = 1.45 M; sum of concentration of formic acid and formate

[HCOOH] = 1.45 M - 0.015 M

[HCOOH] = 1.435 M; equilibrium concentration of formic acid

pKa = -logKa

pKa = -log 1.8×10⁻⁴ M

pKa = 3.74

Henderson–Hasselbalch equation: pH = pKa + log(cs/ck)

pH = 3.74 + log (0.015 M/1.435 M)

pH = 3.74 - 1.98

pH = 1.76

More about buffer: brainly.com/question/4177791

#SPJ4

4 0
1 year ago
What is the kinetic evidence for SN1 reaction
inn [45]

Answer:

In doubling the concentration of the alkyl halide, the reaction rate also increases two-fold. However, doubling the concentration of the nucleophile does not in any way alter the reaction rate. Thus, the reaction rate is proportional only to the alkyl halide's concentration.

7 0
3 years ago
Metallic crystals are excellent conductors of electricity due to the existence of positive and negative ions.
My name is Ann [436]

the answer is FALSE


4 0
3 years ago
Read 2 more answers
Calculate the number of moles of NaOH contained in 250. mL of a 0.05M solution.
steposvetlana [31]

Answer:

0.0125mol

Explanation:

Molarity (M) = number of moles (n) ÷ volume (V)

n = Molarity × Volume

According to this question, a 0.05M solution contains 250 mL of NaOH. The volume in litres is as follows:

1000mL = 1L

250mL = 250/1000

= 0.250L

n = 0.05 × 0.250

n = 0.0125

The number of moles of NaOH is 0.0125mol.

3 0
3 years ago
Other questions:
  • What is the most abundant gas in the atmosphere is _____. argon oxygen nitrogen hydrogen
    7·2 answers
  • What is a likely oxidation<br> state of Chlorine?<br> a)-1<br> b) 7<br> C) -7<br> d) +1
    9·1 answer
  • What is the proper safety response to a trash-can fire in a lab?
    9·2 answers
  • For the mineral torbernite, Cu(UO2)2(PO4)2⋅8H2O, determine the total number of atoms in one formula unit
    15·1 answer
  • The single proton that forms the nucleus of the hydrogen atom has a radius of approximately 1.0×10−13cm. The hydrogen atom itsel
    13·2 answers
  • What is the relationship between air pressure, density, and altitude?
    15·1 answer
  • 7. At what structures in the lungs do the exchange of oxygen and carbon dioxide take place?
    9·2 answers
  • What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?
    15·1 answer
  • 9 Some people say that something that does not
    7·1 answer
  • Which of the following are SI units? Select<br> all that apply.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!