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
marshall27 [118]
2 years ago
12

A student drew atomic models of four elements. Based on these drawings, which element is the least reactive?.

Chemistry
1 answer:
NARA [144]2 years ago
3 0

Answer:

The answer would be A

Explanation:

You might be interested in
A 50.00 g sample of an unknown metal is heated to 45.00°C. It is then placed in a coffee-cup calorimeter filled with water. The
True [87]
First, in order to calculate the specific heat capacity of the metal in help in identifying it, we must find the heat absorbed by the calorimeter using:
Energy = mass * specific heat capacity * change in temperature
Q = 250 * 1.035 * (11.08 - 10)
Q = 279.45 cal/g

Next, we use the same formula for the metal as the heat absorbed by the calorimeter is equal to the heal released by the metal.

-279.45 = 50 * c * (11.08 - 45) [minus sign added as energy released]
c = 0.165

The specific heat capacity of the metal is 0.165 cal/gC
6 0
3 years ago
Read 2 more answers
Proszę napisać wzór kwasu karboksylowego o 7 atomach węgla sumaryczny i strukturalny.
Mice21 [21]

Answer:

Explanation:

Carboxylic acids is a homologous series in which the compounds contain a functional group called the carboxyl group (-COOH). The general molecular formula for carboxylic acids is CnH2n+1COOH. Carboxylic acids contain at least one carboxyl group.

Or in Polish…

Kwasy karboksylowe to homologiczna seria, w której związki zawierają grupę funkcyjną zwaną grupą karboksylową (-COOH). Ogólny wzór cząsteczkowy dla kwasów karboksylowych to CnH2n + 1COOH. Kwasy karboksylowe zawierają co najmniej jedną grupę karboksylową.

8 0
3 years ago
What is an elementary reaction?
tester [92]

Answer:

An elementary reaction is a chemical reaction in which one or more chemical species react directly to form products in a single reaction step and with a single transition state.

8 0
3 years ago
How much will a student earns in 19 weeks if she works for 5 hours each week at a rate of $7 / hour?
koban [17]

Answer:

665

Explanatio

8 0
3 years ago
Read 2 more answers
How can the rescue workers get enrgy to the batteries in their equipment during rescue missions.
Ipatiy [6.2K]

Answer:

a generator that allows them to convert kinetic energy into potential energy

Explanation:

Rescue workers can accomplish this by using a generator that allows them to convert kinetic energy into potential energy. Such as a crank generator, with these, they spin a crank with their hands and the generator takes that kinetic energy that is building up through the work that the rescuer is exerting and converts it to potential electric energy that can properly be used to provide energy to the batteries for their equipment. This is what is generally used for situations such as what rescuers go through when there is no electricity around.

3 0
3 years ago
Other questions:
  • Determine the freezing point of a solution that contains 0.31 mol of sucrose in 175 g of water
    12·1 answer
  • What amounts of sodium benzoate would be required to prepare 2.5L of 0.35M benzoic buffer solution with a pH of 6.10? Ka of benz
    7·1 answer
  • Compared to ultraviolet light, an electromagnetic wave that has a higher frequency will also have ________.
    11·2 answers
  • I kinda need this question answered fast please and thank you :)
    11·1 answer
  • Each 5-ml teaspoon of Extra Strength Maalox Plus contains 450 mg of magnesium hydroxide and 500 mg of aluminum hydroxide. How ma
    5·1 answer
  • What is the pH of a 4.5 x 10 M HI solution?
    5·1 answer
  • Why are so many products made from plastic ?
    6·1 answer
  • Hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
    5·2 answers
  • WHat is zinc please answer correct really important
    6·2 answers
  • What do Arrhenius acids have in common? What do Arrhenius bases have in common? Explain neutralization in terms of the Arrhenius
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!