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
photoshop1234 [79]
3 years ago
13

What is the formula to find the area of circle​

Chemistry
1 answer:
Advocard [28]3 years ago
6 0

Answer:

A= π * r *2

Explanation:

You might be interested in
An organic compound in which a carbonyl group is bonded to two different carbon atoms is a(n) amide. aldehyde. ketone. ester.
77julia77 [94]
An organic compound in which a carbonyl group is bonded to two different carbon atoms is a ketone. The ketones are organic compounds in which a carbonyl group (C=O) is bonded to two carbon atom. A carbonyl group is a carbon-oxygen double bond. Ketones are of great importance in industry and in biology, <span>as solvents, polymer precursors, and pharmaceuticals.</span>
4 0
3 years ago
Read 2 more answers
Which mineral(s) might you be examining if you place some hydrochloric (hcl) acid on a sample and it fizzes?
makvit [3.9K]
The minerals that one might be examining if you place some hydrochloric acid on a sample and it fizzes are Calcite and Dolomite.
Calcite and dolomite are very similar minerals. Both have the same hardness, the same rhombohedral cleavage, and are found in identical geologic settings. The best way to tell one from the other is the acid test; A drop of 1 M HCl on calcite produces an instant , obvious Fizz; a drop on dolomite produces slow or no obvious bubbling. 
4 0
2 years ago
A gas has a volume of 490. mL at a temperature of -35.0 degrees C. What volume would the gas occupy at 42.0 degrees Celsius? Ple
miskamm [114]

Answer:

648.5 mL

Explanation:

Here we will assume that the pressure of the gas is constant, since it is not given or specified.

Therefore, we can use Charle's law, which states that:

"For an ideal gas kept at constant pressure, the volume of the gas is proportional to its absolute temperature"

Mathematically:

\frac{V}{T}=const.

where

V is the volume of the gas

T is its absolute temperature

The equation can be rewritten as

\frac{V_1}{T_1}=\frac{V_2}{T_2}

where in this problem we have:

V_1=490 mL is the initial volume of the gas

T_1=-35.0^{\circ} + 273 = 238 K is the initial temperature

T_2=42.0^{\circ}+273=315 K is the final temperature

Solving for V2, we find the final volume of the gas:

V_2=\frac{V_1 T_2}{T_1}=\frac{(490)(315)}{238}=648.5 mL

8 0
3 years ago
Is a glass window good reflector of heat??
Inessa05 [86]

Answer:

Yes, Is a glass window good reflector of heat.

4 0
3 years ago
Read 2 more answers
As Mia mixed two substances in a test tube, she noticed that the test tube became warm. She also noticed gas coming from the tes
ss7ja [257]

Answer:

a new substance was forming

Explanation:

8 0
3 years ago
Other questions:
  • This reaction is a type of ________ action
    10·1 answer
  • Whats an organic chemist
    15·1 answer
  • Which of these is an example of asexual reproduction?
    13·1 answer
  • The body's nervous system is made up of the brain,the spinal cord, the retina ,and many other nerves. The circulatory system is
    13·2 answers
  • Which cell copies its dna
    10·1 answer
  • The mathematics of combining quantum theory with wave motion of atomic particles is known as _____.
    6·1 answer
  • I want the answer of first and last question not middle question answer ​
    5·2 answers
  • A student has a balloon that looks shiny like a metal and wants to perform an experiment to determine if it contains any metal.
    12·1 answer
  • WHEN A SOCCER PLAYER KICKS A BALL, THE BALL ACCELRATES. EXPLAIN WHAT CAUSES THIS ACCELERATION IN TERMS OF FORCES?
    11·1 answer
  • A
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!