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
Rama09 [41]
2 years ago
13

An atom that has 13 protons and 15 neutrons is element

Chemistry
1 answer:
ololo11 [35]2 years ago
4 0

Answer:

you are correct

Explanation:

i double checked u are correct :D

You might be interested in
Which of these data points is the most reliable?
Sonja [21]

Answer:

third point

Explanation:

omniscient because it gives info about every character instead of one  

hope this helps

5 0
1 year ago
WILL MARK BRAINLIEST please
astra-53 [7]

Answer:

C is the only reasonable answer.. but this is 6th grade science and I'm in 7th, so I'm pretty sure I'm right

5 0
3 years ago
How likely is it that a scientific theory is correct?
yan [13]
It all depends what theory it is most are supported by really good evidence but they just don't have all the evidence so it can't be proven a fact at that time

5 0
3 years ago
Below is a bar graph on candy allowance compared to the child's happiness.
rjkz [21]

Answer:

There is no bar graph attached to this question, however, the question can be answered based on the information given in the question.

The answer is A) average level of happiness

Explanation:

In an experiment, the dependent variable is the variable which is measured by the experimenter. It is the variable that responds to changes made to another variable called independent variable.

In the case of this question, it can be determined, even without the bar graph, that the experiment entails how candy allowance affects a child's happiness. Hence, the candy allowance is changed to influence or cause a response in the child's happiness, which is then measured. Therefore, the AVERAGE LEVEL OF HAPPINESS is the dependent variable.

3 0
3 years ago
Enthalpy of combustion of ethyl alcohol, C2 H5 OH, is – 950 kJ mol–1. How much heat is evolved when one gram of ethyl alcohol bu
melomori [17]
<h3>Answer:</h3>

20.62 Kilo-joules

<h3>Explanation:</h3>
  • The Enthalpy of combustion of ethyl alcohol is -950 kJ/mol.
  • This means that 1 mole of ethyl alcohol evolves a quantity of heat of 950 Joules when burned.

Molar mass of ethyl ethanol = 46.08 g/mol

Therefore;

46.08 g of  C₂H₅OH evolves heat equivalent to 950 kilojoules

We can calculate the amount of heat evolved by 1 g of C₂H₅OH

Heat evolved by 1 g of C₂H₅OH  = Molar enthalpy of combustion ÷ Molar mass

                                      = 950 kJ/mol ÷ 46.08 g/mol

                                      = 20.62 Kj/g

Therefore, a gram of C₂H₅OH  will evolve 20.62 kilo-joules of heat

7 0
3 years ago
Other questions:
  • 7.744 Liters of nitrogen are contained in a container. Convert this amount to grams.
    15·1 answer
  • Which of these would a very short plant most likely use to move water and nutrients through the plant?
    15·2 answers
  • Which of the following is an example of a heterogeneous mixture?
    11·1 answer
  • In the following reaction, when a surplus of hydrazine (N2H4) reacts with 20 liters of hydrogen peroxide (H2O2), how many liters
    11·2 answers
  • Write a balanced equation for double replacement of KOH+ZnCl2
    5·1 answer
  • Air containing 20.0 mol% water vapor at an initial pressure of 1 atm absolute is cooled in a 1- liter sealed vessel from 200°C t
    12·1 answer
  • The leaves on a green plant soak up sunlight to make food. A cow's stomach digests grass that was eaten. These are examples of w
    9·1 answer
  • Which of the 3 molecules: Methane, Propane, Butane would release the most energy when combusted?
    5·1 answer
  • ¿Por qué hay sal de diversos colores?
    14·1 answer
  • A. Dùng chữ số và kí hiệu biểu diễn các ý sau:
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!