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
lbvjy [14]
2 years ago
12

The circumference of a circle is 6.28 millimeters. What is the circle's diameter?

Chemistry
1 answer:
dangina [55]2 years ago
6 0

Answer:2

Explanation:

You might be interested in
An electrochemical cell is powered by the half reactions shown below.
andrezito [222]
Reduction reactions are those reactions that reduce the oxidation number of a substance. Hence, the product side of the reaction must contain excess electrons. The opposite is true for oxidation reactions. When you want to determine the potential difference expressed in volts between the cathode and anode, the equation would be: E,reduction - E,oxidation. 

To cancel out the electrons, the e- in the reactions must be in opposite sides. To do this, you reverse the equation with the negative E0, then replacing it with the opposite sign. 

Pb(s) --> Pb2+ +2e-      E0 = +0.13 V
Ag+ + e-  ---> Ag           E0 = +0.80 V

Adding up the E0's would yield an overall electric cell potential of +0.93 V.
7 0
3 years ago
How many elements are there​
Levart [38]

Answer:

there r 118 elements in periodic table..

hope it helps.

6 0
2 years ago
Read 2 more answers
The reaction 2a + b --> c + d has an activation energy of 80.0 kj/mol. at 320°c, the rate constant k = 1.80 x 10-2 l mol-1 s-
Naddik [55]
To determine the k for the second condition, we use the Arrhenius equation which relates the rates of reaction at different temperatures. We do as follows:

ln k1/k2 = E / R (1/T2 - 1/T1) where E is the activation energy and R universal gas constant.

ln 1.80x10^-2 / k2 = 80000 / 8.314 ( 1/723.15 - 1/593.15)

k2 = 0.3325 L / mol-s
5 0
3 years ago
How many grams will be needed​
klio [65]
787.57 grams GIVE ME BRAINLIEST
8 0
3 years ago
What important processes in your body depend on mitosis
PilotLPTM [1.2K]
Mitosis makes new cells and replaces the cells that are old, lost or damaged
3 0
3 years ago
Other questions:
  • Ammonia (NH3) burns in air to form nitrogen dioxide and water. Calculate grams of nitrogen dioxide produced if 4.0 grams of ammo
    14·1 answer
  • What are at least two things people can do today to help protect Earth and reduce levels of CO2.
    12·1 answer
  • A balloon has a volume of 125mL with 10 pumps of gas. The balloon is reduced in volume to 88mL, how much gas is in the balloon?
    14·1 answer
  • If an atom has 12 protons, 13 neutrons, and 10 electrons, what charge would the atom have?
    7·1 answer
  • which analogy best represents a supersaturated solution? an empty elevator that has a maximum load of 20 people a single person
    15·2 answers
  • Please help fast! I will give brainliest!
    14·1 answer
  • Microorganisms have a major role in maintaining soil biodiversity. They recycle nutrients in ecosystems and decompose organic ma
    13·1 answer
  • PLS HELPPPPP ASAP
    6·1 answer
  • Please help me with this questions
    10·1 answer
  • present day india is in south asia at the northern end of the indian ocean what evidence found in india matches that of other lo
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!