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
mylen [45]
3 years ago
8

How can a chemical reaction be sped up?Select from the drop-down menu to correctly complete the statement.

Chemistry
2 answers:
viktelen [127]3 years ago
8 0

Answer: Temperature

Explanation:

RoseWind [281]3 years ago
6 0

Answer:

Concetration

Explanation:

You might be interested in
when a number in scientific notation contains a significant zero, is that zero also significant in the expanded notation? give t
AlexFokin [52]
I believe you are referring zero as the exponent. <span>Any number (except 0) with exponent 0 is defined to mean 1.
</span>

For one thing, there is a rule: 

<span> a^m/ a^m = a^m-m = a^0

</span>But (when a is not equal to <span>0),
</span>
a^m/ a^m = 1

Therefore, we must define a^0 as 1.

4 0
3 years ago
Which element in group 2 (Alkaline Earth Metals) is the most reactive?
never [62]

Answer:

the reactivity of alkaline earth metals increases from top to the bottom of the group, that's because the atoms get bigger from the top to the bottom so the valence electrons are farther from the nucleus.

8 0
2 years ago
Which one of the following atoms has the largest radius? Ова Осо OCa
RUDIKE [14]

Answer:

Ba

Explanation:

<u>The elements  Calcium ( Ca ) and Cobalt ( Co ) , are both present in the same period , and across the period the atomic radius decreases from left to right , since , the atomic number increases , so the electrons increases , which in turns increases the effective nuclear charge , and hence the size decreases , </u>

Therefore ,

Calcium will have bigger atomic radii as compared to Cobalt .

Now,

<u>The elements Barium ( Ba ) and Calcium ( Ca ) are , both are present in the same group , and down the group , atomic radii increases , since , as going down the group , the atomic number increase , so the shells increases , hence the size increases .</u>

Therefore , the atom with the largest radii is Barium .

7 0
3 years ago
Which of the following is in intensive property a. mass b. magnetism c shape D. volume
lisov135 [29]

Answer:

b. Magnetism (sorry im very late)

Explanation:

Intensive properties do not depend on size, no matter what it doesn't. For example, magnetism, density, melting and boiling points, and color. All of those support intensive property.

3 0
3 years ago
HELPPP What method should you use to separate this sample of mixture?
kozerog [31]

Answer:

The answer to your question is: D. Fractional distillation

Explanation:

A. Column chromatography  this method is use to separate mixtures base in its capacity to be absorbed.

B. Fractional crystallization  this method use the solubility of solutes in a solvent.

C. Simple distillation  is a method to separate 2 liquids based on the difference in their boiling points.

D. Fractional distillation  is a method used to separate a mixture of liquids which have their boiling points very close.

E. Paper chromatography is a method to separate a mixture based on their different rate of migration on a paper.

8 0
3 years ago
Other questions:
  • Is gold amalgamation a chemical reaction with gold and mercury?
    8·1 answer
  • The process of joining many small molecules into larger molecules is called(1) neutralization (3) saponification(2) polymerizati
    15·2 answers
  • Why is it important to balance a chemical equation
    8·1 answer
  • What is the atomic number of carbon and the number of protons
    6·1 answer
  • Suppose these substance were placed in a freezer set to -50 grades celsius. Which substance would become a liquid. Clorine, Merc
    11·1 answer
  • What is the mass of 2.64 moles of water
    10·1 answer
  • Percentage composition
    14·2 answers
  • what quantity of ethylen glycol must be added to 125 g of water to raise the boiling point of 1.0 degrees celsuis
    13·1 answer
  • How does water’s ability to form hydrogen bonds explain why ice is less dense than liquid water?
    15·1 answer
  • Agree or disagree that a scientific theory can be modified provide evidence along!!!!!!!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!