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
Llana [10]
3 years ago
11

An element that speeds up chemical reactions is called a/an

Chemistry
1 answer:
mel-nik [20]3 years ago
7 0
I think it is enzymes.Inside our body most of the chemical reactions are speeds up by enzymes.These enzymes decreases the minimum energy that is required for the reaction to happen. ;-]. Actually it works like a catalyst.
You might be interested in
A gold coin contains 3.47 × 10^23<br> gold atoms.<br> What is the mass of the coin in grams?
VashaNatasha [74]

Answer:

Mass = 114.26 g

Explanation:

Given data:

Number of gold atoms = 3.47×10²³ atoms

Mass in gram = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

3.47×10²³ atoms × 1 mol  /6.022 × 10²³ atoms

0.58 mol

Mass of gold:

Mass = number of moles × molar mass

Mass = 0.58 mol × 197 g/mol

Mass = 114.26 g

4 0
3 years ago
Sarah is in her chemistry lab doing an experiment. When she goes to take the mass of the chemical she is working with, she disco
cupoosta [38]

Answer:

10 x 5 = 50

Explanation:

50 is the mass of her chemical.

7 0
3 years ago
Of the five salts listed below, which has the highest concentration of its cation in water? assume that all salt solutions are s
Zigmanuir [339]
First of all, I need to know what these five salts are. Luckily, I found a similar problem from another website which is shown in the attached picture. The Ksp is the solubility product constant. It follows the formula:

Ksp = [cation concentration]ᵃ[anion concentration]ᵇ
where a and b are the subscripts of the metal and nonmetal, respectively. 

For the solutions ahead, let x be the concentration of the cation.

A.  The formula is PbCr₂O₄.
2.8×10⁻¹³ = [x][x]
Solving for x, x = 5.29×10⁻⁷ M

B. The formula is Co(OH)₂. 
 1.3×10⁻¹⁵ = [x][x]²
Solving for x, x = 1.09×10⁻⁵ M

C. The formula is CoS. 
 5×10⁻²² = [x][x]
Solving for x, x = 2.24×10⁻¹¹ M

D. The formula is Cr(OH)₃. 
 1.6×10⁻³⁰ = [x][x]³
Solving for x, x = 3.56×10⁻⁶ M

E. The formula is Ag₂S. 
 6×10⁻⁵¹ = [x]²[x]
Solving for x, x = 1.82×10⁻¹⁷ M

<em>Thus,the highest concentration is letter B, Cobalt (II) Hydroxide.</em>

5 0
3 years ago
Rango carefully mixed 15.6 g of sodium with chlorine. The reaction produced 39.7 g of sodium chloride. How many grams of chlorin
Evgen [1.6K]

Answer:

24.1g of chlorine & 15.6g of sodium

Explanation:

according to the law of conservation of mass

Na+Cl=NaCl only

5 0
3 years ago
What is the total number of electron pairs shared between the carbon atom and one of the oxygen atoms in a carbon dioxide molecu
TEA [102]
The answer is 2 pairs. The carbon atom has 4 electrons and oxygen atom has 6 electrons. The purpose of shared electron is to get 8 electrons at the outer layer. So the carbon atom needs to share 4 electrons which is 2 pairs with oxygen to be stable.
7 0
3 years ago
Other questions:
  • At what pressure will CO2 dissolve in water? ​
    7·1 answer
  • The electron
    15·1 answer
  • Prostate cells usually require testosterone and other androgens to survive
    11·1 answer
  • Is uranium a mixture or pure substance
    5·2 answers
  • What volume of lead (of density 11.3 g/cm3 ) has the same mass as 395 cm3 of a piece of redwood (of density 0.38 g/cm3 )? Answer
    11·1 answer
  • How many grams of a precipitate are formed after mixing 10.0 mL of a 1.30 M solution of sodium sulfate with 20.0 mL of a 1.10 M
    7·1 answer
  • How many kinds of horses are there in the world? Give me a real number, plz its for a magazine article!
    10·2 answers
  • What volume (L) will 3.56 mol NH3 occupy at STP. (1 point)
    11·1 answer
  • What mass of glucose can be produced from photosynthesis reaction using 10.0 mols co2
    6·1 answer
  • Why is water sometimes called the ""universal solvent?"".
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!