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
Travka [436]
2 years ago
8

For a concave mirror, incident light beams through C will reflect:

Chemistry
1 answer:
Katena32 [7]2 years ago
6 0

Answer:

c

Explanation:

You might be interested in
Which organelle below is the "brain" or control center for a cell?
jeka94
The answer will be A. Hoped it help!
4 0
3 years ago
Read 2 more answers
Cobalt-60 is a strong gamma emitter that has a half- life of 5.26 yr. The co balt-60 in a radiotherapy unit must be replaced whe
Alenkasestr [34]

<u>Answer:</u> The sample of Cobalt-60 isotope must be replaced in January 2027

<u>Explanation:</u>

The equation used to calculate rate constant from given half life for first order kinetics:

t_{1/2}=\frac{0.693}{k}

where,

t_{1/2} = half life of the reaction = 5.26 years

Putting values in above equation, we get:

k=\frac{0.693}{5.26yrs}=0.132yrs^{-1}

Rate law expression for first order kinetics is given by the equation:

k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}

where,

k = rate constant = 0.132yr^{-1}

t = time taken for decay process = ? yr

[A_o] = initial amount of the sample = 100 grams

[A] = amount left after decay process =  (100 - 75) = 25 grams

Putting values in above equation, we get:

0.132=\frac{2.303}{t}\log\frac{100}{25}\\\\t=10.5yrs

The original sample was purchased in June 2016

As, June is the 6th month of the year, which means the time period will be 2016+\frac{6}{12}=2016.5

Adding the time in the original time period, we get:

2016.5+10.5=2027

Hence, the sample of Cobalt-60 isotope must be replaced in January 2027

3 0
3 years ago
What statement does not accurately describe the following equation? C6H12O6+---&gt;6H20+6CO2+energy A) oxygen is a react ant B)
STatiana [176]
The answer is B. The complete equation is C6H12O6 + 6O2 -->6H2O + 6CO2 + energy. So we can know that A and C and D is right. For B, the reaction release energy so it is exothermic reaction.
4 0
3 years ago
Read 2 more answers
Which phrase describes how metamorphic rocks form?
goldfiish [28.3K]
From Melting! Hope this helped
3 0
3 years ago
Read 2 more answers
A scientist performs an experiment in which a radium–226 (Ra–226) atom decays into radon–222 (Rn–222). The scientist concludes t
tangare [24]

Answer:

B)

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • If you have 220 liters O2 at STP how many moles of O2 do you have
    8·1 answer
  • When a gas is Perfect, or Ideal, what properties can be related in an equation?
    5·1 answer
  • How to tell which chair conformation is more stable?
    15·1 answer
  • Which of the following of the following is the same for both hydrogen and potassium ?
    9·1 answer
  • How many moles of carbon atoms are there in 0.500 mol of C2H6?
    5·1 answer
  • If I have 36ml of water and 64ml of guava juice to make a 100ml solution, what would the percent composition be?
    11·1 answer
  • Consider the reaction 3O2(g) 2O3(g) At 298 K, the equilibrium concentration of O2 is 1.6 x 10^-2 M, What is the equilibrium cons
    14·1 answer
  • What is the definition of bond (in chemistry) ?
    5·2 answers
  • Kinetic energy CANNOT be converted into potential energy<br> True<br> False
    6·2 answers
  • What is the molarity of a solution with 55 grams of CaCL2 dissolved in. 78 L of water?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!