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
kolezko [41]
3 years ago
8

How does a smoke detector utilize radiation?

Chemistry
1 answer:
Schach [20]3 years ago
5 0
D. Beta radiation ionizes the air. When smoke
interacts with the ionized particles it causes the
alarm to sound.
You might be interested in
PLEASE HELP:<br><br> iron reacts with nitrogen to form iron(III) nitride
lutik1710 [3]

Answer:

2Fe +N_{2} -> 2FeN

Explanation:

Iron is Fe, nitrogen is N. Nitrogen is diatomic, which means it occurs as a molecular pair by itself. Iron III nitride has a chemical formula of FeN because nitrogen has a charge of 3-, and iron III tells us the iron has a charge of 3+ so you just need one of each to make the charges balance and the compound neutral.

3 0
2 years ago
The following characteristics describe which type of mixture, homogeneous or heterogeneous? The substance is mixed uniformly thr
alexira [117]
The correct answer to this question is letter "A. homogeneous mixture." The following characteristics describe the type of mixture, which is a homogeneous mixture. The substance is mixed uniformly throughout and each part of <span>the substance contains the same ratio of materials with the same properties</span>
3 0
3 years ago
What is the pressure in mm hg of a 0.025 mole sample of co2 at 350 k in a 200 l container?
Leni [432]

Answer:

0.65mmHg

Explanation:

Take R =8.314J/mol/K

V=200dm3

PV=nRT

P=0.025×8.314×623/200

=0.65mmHg

7 0
1 year ago
The specific heat of copper metal is 0. 385 J/(g °C). How much energy must be added to a 35. 0-gram sample of copper to change t
Rus_ich [418]

The amount of heat required for changing the temperature of copper has been 606 J. Thus, option B is correct.

Specific heat has been defined as the amount of heat required to raise the temperature of 1 gram of substance by 1 degree Celsius.

The heat required to raise the temperature has been expressed as:

\rm Heat=mass\;\times\;specific\;heat\;\times\;Change\;in\;temperature

<h3>Computation for the heat energy required</h3>

The given specific heat of copper has been \rm 0.385\;J/g^\circ C

The mass of copper has been, \rm 35\;g

The initial temperature of copper has been, \rm 20^\circ C

The final temperature of copper has been, \rm 65^\circ C

The change in temperature has been, \Delta T

\Delta T=\text{Final\;temperature-Initial\;temperature}\\\Delta T =65^\circ \text C-20^\circ \text C\\\Delta T=45^\circ \text C

Substituting the values for the heat required as:

\rm Heat=35\;g\;\times\;0.385\;J/g^\circ C\;\times\;45^\circ C\\Heat=606\;J

The amount of heat required for changing the temperature of copper has been 606 J. Thus, option B is correct.

Learn more about specific heat, here:

brainly.com/question/2094845

7 0
2 years ago
there are tiny plants growing on rock fence after the several year . you observe something happened on the rock which of the fol
Bingel [31]

it is moss

Explanation:

5 0
3 years ago
Other questions:
  • The equilibrium concentrations of the reactants and products are [ HA ] = 0.260 M [HA]=0.260 M , [ H + ] = 2.00 × 10 − 4 M [H+]=
    11·1 answer
  • Who came up with the idea that all the continents were once joined together
    7·2 answers
  • Identify the number with the correct number of significant figures for each step of the calculation and for the final answer. No
    8·2 answers
  • If atoms are made up smaller parts such as electrons, why are atoms considered the basic unit of matter
    5·1 answer
  • Can you mix copper with rubbing alcohol
    7·1 answer
  • A solution has a pOH of 8.20. What is the concentration of H3O+?
    14·1 answer
  • Here is the balanced chemical equation for the combustion of isopropyl alcohol: 2C3H7OH(l) + 9O2(g) → 6CO2(g) + 8H2O(g) Multiply
    15·2 answers
  • State the law of multiple proportions.
    12·2 answers
  • Which of these describes a chemical property of a substance?
    7·2 answers
  • Which of the following is not correct Stated? '
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!