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
Otrada [13]
3 years ago
9

Which statement is completely accurate?

Chemistry
1 answer:
AURORKA [14]3 years ago
3 0

Answer:The same chemical element can have a different number of neutrons and still be the same element. We refer to the atoms of the same element with different numbers of neutrons as "isotopes"

Explanation:

You might be interested in
Choose all the answers that apply.
Zigmanuir [339]

Answer: The answers are the first and third options.

7 0
3 years ago
Read 2 more answers
what pressure must be applied to compress a gas from 85 L at 3.5 atm to 15 L? a-17.3atm b-24.7atm c-19.8atm d-21.4atm
pychu [463]
A... I think ., not sure
5 0
3 years ago
1. The hydrogenation of ethene gas at 298 K shows a decrease in disorder (AS-120.7 J/mol-K) during an exothermic reaction ( Delt
Anna71 [15]
K shows a decrease in disorder (AS = -120.7 J/(mol-K)) during an exothermic reaction (AH' = -136.9 kJ/mol). Determine whether the reaction is spontaneous or ...
8 0
3 years ago
Identitfy the types of reaction:
Vera_Pavlovna [14]

Answer:

C2H5OH + Na = C2H5ONa + H2 - Single replacement reaction

AgCl + HNO3 = AgNO3 + HC - Double replacement reaction

N2 + H2 = NH3 - Combination reaction

MgCO3 = MgO + CO2  - Decomposition reaction

Explanation:

<u>Single replacement reaction</u> - The type of reaction in which one strong ion replaces the weak ion from the solution.

For example: C2H5OH + Na = C2H5ONa + H2

<u>Double replacement reaction </u>- The reaction in which two compounds in a solution reacts by interchanging their ions and forms a new product.

For example: AgCl + HNO3 = AgNO3 + HCl

<u>Combination reaction</u> - The type of reaction in which two or more compounds combine together to form a single compound.

For example: N2 + H2 = NH3

<u>Decomposition reaction</u> - The type of reaction in which only one compounds break down into two or more new compounds.

For example: MgCO3 = MgO + CO2

Hence, the correct answer is:

C2H5OH + Na = C2H5ONa + H2 - Single replacement reaction

AgCl + HNO3 = AgNO3 + HC - Double replacement reaction

N2 + H2 = NH3 - Combination reaction

MgCO3 = MgO + CO2  - Decomposition reaction

7 0
4 years ago
Which has more thermal energy, a bucketful of water at 21 Celsius degrees or a swimming pool at the same temperature?
Nutka1998 [239]

Swimming pool has more thermal energy than bucket of water at the same temperature.

<h3>What is heat capacity?</h3>

Heat capacity or thermal energy is the amount of heat that is use by an object to produce a unit change in temperature or the heat absorbed by an to produce a change in temperature.

The heat capacity of an object total depends on the objects mass and chemical composition. Because of swimming pool have larger mass, it had larger heat capacity than bucket full of water even at the same temperature.

Therefore, Swimming pool has more thermal energy than bucket of water at the same temperature.

For more details on heat capacity check the link below.

brainly.com/question/21406849

6 0
3 years ago
Other questions:
  • Give the number of valence electrons for each of the following: Ba, Al, P, Se, Br, K
    6·1 answer
  • Should the line of best- fit travel through the origin of the graph ? Explain your reasoning
    11·1 answer
  • Consider the following gas samples: 10. g of hydrogen gas, 10. g of helium gas, 2.5 moles of nitrogen gas, 110. g of carbon diox
    8·1 answer
  • Humans need gasoline for transportation, but using gasoline releases many pollutants. City government cab set policies to decrea
    9·2 answers
  • The use of existing information in books, articles, and electronic databases is known as Group of answer choices Primary researc
    8·1 answer
  • Question 39 (1 point)<br> What chemical family is helium in?
    7·2 answers
  • Scientists believe that the modern horse developed from a short, horse-like mammal about the size of a dog. Over millions of yea
    13·1 answer
  • Calculate the % dissociation of 0.10 M solution of acetic acid (pKa = 4.75)
    12·1 answer
  • When a small piece of sodium metal is dropped into a beaker of water, hydrogen gas (H2) and a solution of sodium hydroxide (NaOH
    7·1 answer
  • How many atoms of carbon or one mole of glucose
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!