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
olasank [31]
3 years ago
11

A substance that speeds up the rate of a chemical reaction is called

Chemistry
2 answers:
GuDViN [60]3 years ago
4 0
A substance that speeds up the rate of a chemical reaction is called a A. Catalyst.
Tatiana [17]3 years ago
4 0

The answer is Catalyst. 100% final answer.

You might be interested in
A 36.0−g sample of an unknown metal at 99°C was placed in a constant-pressure calorimeter containing 70.0 g of water at 24.0°C.
Dimas [21]

Answer: 0.52849 j /g °C

Explanation:

Given the following :

Mass of metal = 36g

Δ Temperature of metal = (28.4 - 99)°C = - 70.6°C

Mass of water = 70g

Δ in temperature of water = (28.4 - 24.0) = 4.4°C

Heat lost by metal = (heat gained by water + heat gained by calorimeter)

Quantity of heat(q) = mcΔT

Where; m = mass of object ; c = specific heat capacity of object

Heat lost by metal:

- (36 × c × - 70.6) = 2541.6c - - - - (1)

Heta gained by water and calorimeter :

(70 × 4.184 × 4.4) + (12.4 × 4.4) = 1288.672 + 54.56 = 1343.232 - - - - (2)

Equating (1) and (2)

2541.6c = 1343.232

c = 1343.232 / 2541.6

c = 0.52849 j /g °C

8 0
3 years ago
Some properties of liquid water are very different from those of solid water (ice). Explain why freezing is considered a physica
drek231 [11]

Answer:

A chemical change is a change in the chemical makeup of a substance and results in a new substance. Ice and water both have the same chemical makeup - ice is just a different state and has the same atoms but in an expanded form.

Explanation:

8 0
3 years ago
Hydrogen gas has a density of 0.090 g/L, and at normal pressure and -1.72 C one mole of it takes up 22.4 L. How would you calcul
BlackZzzverrR [31]

Answer:

n= \frac{m}{ \rho }* \frac{1 mol}{22.4 L}

Explanation:

Assuming that all caculations are at normal pressure and -1.72°C :

n= \frac{m}{ \rho }* \frac{1 mol}{22.4 L}

Where

n is the number of moles of hydrogen

n is the mass of hydrogen

\rho is the density of hydrogen

6 0
3 years ago
Read 2 more answers
The reaction of an Arrhenius acid with an Arrhenius base produces water and A) a salt B) an ester C) an aldehyde D) a halocarbon
Ratling [72]
The reaction of an Arrhenius acid with an Arrhenius base produces water and <span>A) a salt</span>
8 0
3 years ago
Read 2 more answers
Why is it better to allow the solvent front to move almost to the top of a paper strip rather than stopping it at the halfway po
m_a_m_a [10]

Answer:

To allow all the elements or compounds to separate complete.

Explanation:

In chromatography, the compounds need some space and time to separate, one from each other, if you  just use the half of the paper strip maybe you will not notice the different spots of compounds. Remember all the substances have different affinity for the solvents, that means, some react very quickly but others need more time as the colors that conform the black color in an ink.

4 0
2 years ago
Other questions:
  • What type of energy is present inside the bonds of atoms?
    6·2 answers
  • A website promoting the use of alternative energy vehicles and hybrid technologies claims that "A typical automobile in the USA
    13·1 answer
  • Complete the paragraph about the formation of sodium phosphide.
    13·1 answer
  • Iron (Fe): [Ar]4s23d6 core electrons valence electrons
    9·2 answers
  • How does mass and acceleration affect force? (What happens to force if mass increases? What happens to force if acceleration inc
    8·1 answer
  • 1 mole of sulfur atoms has how much mass
    6·2 answers
  • How many moles are in 33.12 grams of Titanium?
    12·1 answer
  • 50 POINTS PLEASE ANSWER CORRECTLY
    8·1 answer
  • Give the name of the products formed
    15·1 answer
  • Which disease is caused by a living pathogen? a. common colds b. smallpox c. cholera d. influenza
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!