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
Roman55 [17]
3 years ago
7

Examples of elements​

Chemistry
1 answer:
DedPeter [7]3 years ago
5 0
Oxygen, carbon, hydrogen, nitrogen, aluminum
You might be interested in
What is the best way to organize desert several several million different types of organisms on earth
SCORPION-xisa [38]

Answer:

The desert should be divided into different types based on its properties. The organisms living in specific type of desert should be named accordingly.

Explanation:

There are usually five major types of desert in the world. Tropical, rainy, semi arid desert, coastal desert and dry desert. There are many different types of organisms living in these deserts. The biodiversity has made it difficult for the humans to analyse and identify the millions of different types. The best way is to organize and name the organisms that live in specific types of deserts.

5 0
2 years ago
when the volume of a gas is changed from 3.75 L to 6.52 L the temperature will change from 100k to blank k
Makovka662 [10]
Guy-Lussac's Law states that the volume and the temperature are directly proportional given that the pressure remains constant.

For this problem, we will assume constant pressure. Based on the law:
(Volume/Temperatur)1 = (Volume/Temperature)2
(3.75/100) = (6.52/T)
T = 166.667 kelvin
4 0
3 years ago
Read 2 more answers
HELP PLSSSSSSSSSS
Nat2105 [25]

Answer:

ask your mom

Explanation:

copy this \pink{ \rule{999pt}{999999pt}}

and the result is here

btw if you want to change color change the \pink (if you want?)

\red{ \rule{999pt}{999999pt}}

8 0
2 years ago
Help me now plssssssss i will give brainliest!!!!!!!!!!!!!!!!!!!!!!!
yanalaym [24]

Answer:

products are copper and aluminium chloride

reactants are aluminium and copper chloride

Explanation:

products are formed at the end of a reaction

reactants are what's reacting to form the products ie the things at the start of the equation

4 0
2 years ago
A 0.25-mol sample of a weak acid with an unknown Pka was combined with 10.0-mL of 3.00 M KOH, and the resulting solution was dil
Masteriza [31]

Answer : The value of pK_a of the weak acid is, 4.72

Explanation :

First we have to calculate the moles of KOH.

\text{Moles of }KOH=\text{Concentration of }KOH\times \text{Volume of solution}

\text{Moles of }KOH=3.00M\times 10.0mL=30mmol=0.03mol

Now we have to calculate the value of pK_a of the weak acid.

The equilibrium chemical reaction is:

                          HA+KOH\rightleftharpoons HK+H_2O

Initial moles     0.25     0.03        0

At eqm.    (0.25-0.03)   0.03      0.03

                     = 0.22

Using Henderson Hesselbach equation :

pH=pK_a+\log \frac{[Salt]}{[Acid]}

pH=pK_a+\log \frac{[HK]}{[HA]}

Now put all the given values in this expression, we get:

3.85=pK_a+\log (\frac{0.03}{0.22})

pK_a=4.72

Therefore, the value of pK_a of the weak acid is, 4.72

7 0
3 years ago
Other questions:
  • Which of the following is a unit for volume?<br> m3<br> km<br> cg<br> dkm
    8·2 answers
  • In a physical change of matter,​
    5·2 answers
  • The Environmental Protection Agency (EPA) and the National Highway Traffic Safety Administration (NHTSA) are coordinating standa
    7·2 answers
  • If an object loses electrons it will become negatively charged. <br><br><br> True<br><br> False
    6·1 answer
  • Can the crabs see the plankton they eat near the ocean floor?
    7·2 answers
  • During _____________ there are 24 hours of daylight at the North Pole.
    14·1 answer
  • Which molecule is butyne?
    5·1 answer
  • If there are more shells does the nuclear charge decrease
    14·1 answer
  • What is the first thing you must do to solve a stoichiometry problem
    6·1 answer
  • Many people in the world don't have access to clean drinking water. What may be the cause of this?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!