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
Lina20 [59]
3 years ago
12

At the beginning of an experiment, a scientist has 176 grams of radioactive goo. After 165 minutes, her sample has decayed to 5.

5 grams.
What is the half-life of the goo in minutes?

Find a formula for G(t) , the amount of goo remaining at time t.G(t)=?

How many grams of goo will remain after 50 minutes? ...?
Chemistry
1 answer:
Paul [167]3 years ago
6 0
The half-life equation is written as:

An = Aoe^-kt

We use this equation for the solution. We do as follows:

5.5 = 176e^-k(165)
k = 0.02
<span>What is the half-life of the goo in minutes? 
</span>
0.5 = e^-0.02t
t = 34.66 minutes <----HALF-LIFE


Find a formula for G(t) , the amount of goo remaining at time t.G(t)=? 

G(t) = 176e^-0.02t

How many grams of goo will remain after 50 minutes? 

G(t) = 176e^-0.02(50) = 64.75 g
You might be interested in
Below is a list of substances. Some are mixtures and some are not. Select all of the substances which are homogeneous.
Papessa [141]

B the atmosphere

D. gasoline

C. a carbonated soft drink (without bubbles)


6 0
3 years ago
Q1.
dlinn [17]

Answer:

there are four peaks in the 13c NMR (B)

3 0
3 years ago
Round 0.0011675cg to four significant figures
atroni [7]

Answer:

answer is 0.001168 is correct

8 0
2 years ago
What does the law of conservation of energy imply?
GenaCL600 [577]
Answer a is the correct one
4 0
2 years ago
Read 2 more answers
How does salt help melt the road?​
QveST [7]

Lower the melting point

Explanation:

Salts helps to melt road by lowering the melting point. It acts as an impurity and generally, impurities low the melting point of substances.

Salts are used as an antifreeze.

  • Water freezes at 0°C and forms ice/snow which can impede human and vehicular movement.
  • When salt is added, it causes the depression of the freezing point by lowering it further.
  • The freezing point is pegged back at -6°C.
  • This way it takes more low temperature to freeze the water.
  • The salt acts as an impurity and causes the depression of melting point and widening of the melting range.

learn more:

Matter brainly.com/question/10972073

#learnwithBrainly

8 0
3 years ago
Read 2 more answers
Other questions:
  • According to the following reaction, how many grams of water are produced in the complete reaction of 29.7 grams of ammonia? 4 N
    7·1 answer
  • Write the formula for barium nitrite. write the formula for barium nitrite. bn ba(no2)2 ba3n2 b(no2)3 bano3
    5·1 answer
  • Gravity does NOT * 10 points increase when the distance between two objects increases. increase when the distance between two ob
    9·1 answer
  • An automobile gasoline tank holds 22 kg of gasoline. When the gasoline burns, 86 kg of oxygen is consumed and carbon dioxide and
    14·1 answer
  • Does anyone know how to do common ion effect in chemistry?
    9·1 answer
  • What is public property​
    11·2 answers
  • How many grams are in 6.02E23 atoms of carbon?
    13·1 answer
  • How does gravity affect the rain during a rainstorm?
    13·2 answers
  • Pls help I will give u points pls
    10·1 answer
  • Fish-liver oil is a good source of vitamin A, whose concentration is measured spectrometrically at a wavelength of 329 nm.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!