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
Kruka [31]
3 years ago
12

A substance has a pH of 4. Is it an acid or a base?

Chemistry
2 answers:
Drupady [299]3 years ago
8 0
Acid; a ph less than 7 is acidic and more than 7 is a base
LenaWriter [7]3 years ago
3 0
Acid if it’s more that 7 then it is a base.
You might be interested in
Which of these illustration shows isotopes of the elements boron b
Delvig [45]
The isotopes are elements with the same number of protons but different number of neutrons.

Boron atomic number is 5. That is the number of protons.

The natural occurring isotopes of boron contain 5 or 6 neutrons. Other, non stable isotopes, contain from 1 to 16 neutrons.
5 0
3 years ago
In the reaction C + O2 → CO2, 18 g of carbon react with oxygen to produce 72 g of carbon dioxide. What mass of oxygen would be n
melamori03 [73]

Answer:

54 g

Explanation:

Given data:

Mass of carbon = 18 g

Mass of CO₂ = 72 g

Mass of oxygen needed = ?

Solution:

Chemical reaction:

C + O₂     →       CO₂

according to law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

This law was given by French chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

In given photosynthesis reaction:

6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.

In a similar way,

C   +    O₂     →       CO₂

18 g +   X      = 72

X = 72 -18

X = 54 g

Thus, 54 g of O₂ are required.

3 0
3 years ago
Read 2 more answers
Whoever can answer this I will give all of my points to and brainliest award.
ZanzabumX [31]

i dont see the picture.

7 0
3 years ago
Read 2 more answers
You run a 5k for charity. How many feet do you run?
slamgirl [31]

You run approximately 16404 feet.

3 0
3 years ago
What does heat mean in chemistry
Tpy6a [65]

Answer:

Heat is the transfer of energy that results from the difference in temperature between a system and its surroundings. At a molecular level, heat is the transfer of energy that makes use of or stimulates disorderly molecular motion in the surroundings.

Explanation:

8 0
3 years ago
Other questions:
  • Why do we use copper for iPhone chargers
    8·1 answer
  • In which cellular structure is food produced in plants
    15·1 answer
  • Describe general characteristics of potassium
    14·1 answer
  • 3) Water is a very important factor for us individually, but its importance stretches further than that. For instance, because w
    7·2 answers
  • Describe the makeup of Earth’s atmosphere. How do solids get into the air?​
    15·2 answers
  • How many electrons does an aluminum ion have?<br> a. 10<br> b. 13<br> c. 14<br> d. 16
    12·2 answers
  • In the reaction H2S + NH3 NH4+ + HS–, the two Brönsted-Lowry bases are
    12·2 answers
  • 3. How is the potential energy of any object released? What happens to this released energy? I
    6·1 answer
  • The value of Avogadro number is
    13·1 answer
  • In what areas of the periodic table do you find the most highly reactive elements?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!