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3 years ago

11

During a volcanic eruption, large amounts of poisonous gases and particles are released into the atmosphere. How do some of thes

e gases eventually reach the Earth's surface?
A) through rain
B) through wind
C) through lava
D) through trees

2 answers:

Alexandra [31]3 years ago

6 0

Yea it’s aaaaaaaaaaaaa

suter [353]3 years ago

5 0

The answer is A because it gets caught in clouds then is let down in rain

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Why can gasses change volume?

soldi70 [24.7K]

Answer:

b. I've seen a question like this before lol

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3 years ago

Read 2 more answers

1. Describe how you can use the graduated cylinder to determine the volume of a small, irregularly-shaped metal. 2. What safety

alisha [4.7K]

Explanation:

1.

i. Measure the initial volume of water in a graduated cylinder.

ii. Now submerge the irregularly shaped metal into water in a graduated cylinder.

iii. Measure the final volume of water.

iv. The difference between the final volume and the initial volume is the volume of the irregularly shaped metal.

2.

When adding the irregularly shaped metal into the glass graduated cylinder. Make sure that the irregularly shaped metal is completely submerged into the water.

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2 years ago

(6 points) Alice owns 20 grams of a radioactive isotope that has a half-life of ln(4) years. (a) Find an equation for the mass m

Cloud [144]

<u>Answer:</u> The equation to calculate the mass of remaining isotope is $[A]=\frac{20}{10^{-0.217t}}$

<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 = $\ln 4=1.386yrs$

Putting values in above equation, we get:

$k=\frac{0.693}{1.386yrs}=0.5yrs^{-1}$

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 = $0.5yr^{-1}$

t = time taken for decay process

$[A_o]$ = initial amount of the sample = 20 grams

[A] = amount left after decay process = ? grams

Putting values in above equation, we get:

$0.5=\frac{2.303}{t}\log\frac{20}{[A]}$

$[A]=\frac{20}{10^{-0.217t}}$

Hence, the equation to calculate the mass of remaining isotope is $[A]=\frac{20}{10^{-0.217t}}$

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3 years ago

Answer the 2 following questions: (ill give brainlist to someone)

julsineya [31]

Answer:

I think that both have the same mass

Explanation:

PLEASE MARK ME AS BRAINLIEST THANK YOU

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2 years ago

Name 3 characteristics that can be used to identify minerals

algol13

Streak
Scent
Cleavage

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2 years ago