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
Neko [114]
4 years ago
15

Which of the following statements is true?

Chemistry
2 answers:
sammy [17]4 years ago
7 0

Answer:

A

Chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates are constant.

Explanation:

B/c chem reactions can be affected by temperature, pressure, etc. whereas, nuclear decays are constant. The decay rate itself is measured over a long period of time and it remains constant I believe.

tankabanditka [31]4 years ago
6 0
I’m pretty sure it’s A!
You might be interested in
What word or two-word phrase best describes the shape of the fluoroform molecule?
Vlad [161]

Answer : The shape of the fluoroform molecule is Tetrahedral.

Explanation :

First we have to calculate the Hybridization of the molecule by formula,

\text{Number of electrons} = \frac{1}{2}[V+H-C+A]

where,

V = Number of valence shell electron in central atom

H = Number of neighboring monovalent atom

C = charge of cation

A = charge of anion

The central atom in this molecule is Carbon, it has 4 electrons in their valence shell.

The neighboring monovalent atoms are one Hydrogen atom and three Fluorine atom.

There is no charge of cation and anion on the given molecule.

V = 4

H = 1 Hydrogen atom + 3 fluorine atom = 4

C = 0

A = 0

By the above hybridization formula, we get

\text{Number of electrons}= \frac{1}{2}[4+4-0+0] = 4

The number of electron pair = 4

The number of lone pair = 0

The number of electrons is 4, this means that the hybridization is sp^{3} and the geometry of the molecule is Tetrahedral.

The geometry of the molecule is shown below.


3 0
3 years ago
A gas has a volume of 590 ml at a temperature of -55.0°C. What volume will the gas occupy at 30.0°C?
Alexeev081 [22]

819 ml is the volume the gas will occupy at 30.0°C.

Explanation:

Data given:

initial volume of the gas V1 = 590 ml

initial temperature of the gas T1 = -55 degrees OR 218.15

final volume of the gas V2 = ?

final temperature of the gas T2 = 30 degrees OR 303.15

Charles' Law equation is used to calculate the volume of gas at 30 degrees from the data given in the question.

\frac{V1}{T1}= \frac{V2}{T2}

V2 = \frac{V1T2}{T1}

V2 = \frac{590 X 303.15}{218.15}

V2 = 819 ml

The final volume of the gas would be 819 ml.

6 0
4 years ago
How many atoms are found in a 15.5 g sample of bismuth?
dmitriy555 [2]

Answer:

The number of particles in the 41.8g sample of Bismuth is 12.044 × 10²³

Explanation:

3 0
3 years ago
A sample of Strontium-90 is found to have decayed to one-fourth of its original amount after 58.2 years. What is the half-life o
mafiozo [28]
The half-life of strontium-90 is 28.8 years.
3 0
4 years ago
Read 2 more answers
What is the overall reaction order for this rate law: rate = k[A]2[B][C]?
Kay [80]

Explanation:

uuhgcthcfgjmobaocodo

7 0
3 years ago
Other questions:
  • Helpppp I need helpp plesse
    14·2 answers
  • How is the thermal energy of a substance related to its physical state 
    10·2 answers
  • How many moles are in 2.16 x 1024 atoms of silver??
    9·2 answers
  • What happens to solubility when the solute is crushed before adding to water
    9·1 answer
  • To convert from Mass A to moles of B in stoichiometry problems, the following steps are followed:
    14·1 answer
  • the principle that under similar pressures and temperatures, equal volumes of gases contain the same number of molecules is attr
    9·1 answer
  • The Lewis dot system is a way of visualizing
    10·2 answers
  • Why does ice have a different density than liquid water?
    11·1 answer
  • Final volume of a .50 M H3PO4 solution prepared from 50 mL of a 6 M H3PO4 solution
    15·1 answer
  • El aguacate al oxidarse, ¿que fenómeno es?, ¿físico, químico o alotropicos?​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!