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
natali 33 [55]
3 years ago
14

What is a control?

Chemistry
2 answers:
White raven [17]3 years ago
6 0

Answer:

a is the answer

please mark it brainliest

Neporo4naja [7]3 years ago
6 0

Answer:

A control variable (or scientific constant) in scientific experimentation is an experimental element which is constant and unchanged throughout the course of the investigation.

Explanation:

You might be interested in
What is electron configuration? How does it work?
Leya [2.2K]
Electron configuration<span> is the standard notation used to describe electronic structure of an atom. </span>
7 0
4 years ago
Read 2 more answers
If 0.60 L of a solution contains 6.6 g of NaBr, what is its molar concentration?
-BARSIC- [3]

Answer:

Molarity = moles ÷ liters

to get moles of NaBr divide grams of NaBr by its molar mass (mass of Na + mass of Bromine)

Na = 22.989769

Br = 79.904

molar mass of NaBr = 102.893769

6.6g ÷ 102.893769 = 0.064143826 moles of NaBr

0.064143826 moles ÷ 0.60 liters = 0.1069 molar concentration or 11 %

7 0
3 years ago
Why does the rate of a chemical reaction increase with a rise in the temperature of the reactants?
klasskru [66]
More collisions occur making the particles used up
4 0
3 years ago
An element has five valence electrons available for bonding.this element is most likely which of the following?
MrRa [10]
Carbon most likely !
4 0
4 years ago
To completely neutralize a 0.325 g sample of pure aspirin, 15.50 mL of a sodium hydroxide solution is added. If 16.25 mL of the
Kruka [31]
<span>a. 0.325 g / 63.55 g/mol = 5.11 X 10^-3 moles Cu. SHould form 5.11 X 10^-3 mol Cu2+

b. Should form 5.11 X 10^-3 mol Cu(OH)2

c. 1 g Zn / 65.4 g/mol = 0.0153 mol Zn
Excess Zn = 0.0153 - 0.0051 = 0.0102 moles excess zinc

d. 5.11 X 10^-3 mol Mg X 24.3 g/mol = 0.124 grams Mg</span>
3 0
3 years ago
Other questions:
  • 10.0 mL of a HF solution was titrated with a 0.120 N solution of KOH; 29.6 mL of
    8·1 answer
  • Oswald avery helped build our understanding of genetics by showing that
    12·1 answer
  • Based on Table I, which compound dissolves in water by an exothermic process?
    13·1 answer
  • Which element is used to "paint" the skin to prevent infection from cuts and scratches?
    15·2 answers
  • Write the product concentration expression for the decomposition of ammonia to hydrogen and nitrogen.
    12·1 answer
  • RIGHT ANWSER GETS MARKED BRAINLIEST
    11·2 answers
  • Which represents the smallest percentage of earths water a.frozen water b. Ground water c. Salt water d.surface fresh water
    9·1 answer
  • You will write 2-3 paragraphs about how you think the earth was formed
    6·2 answers
  • Did the transformed plant grow into a healthy mature plant?
    13·1 answer
  • When a substance like sugar dissolves in water, the particles intermingle. This is possible because the particles of sugar
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!