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Ipatiy [6.2K]
2 years ago
14

HELPPPPPPPPPP 100 POINTSSSSSSSSSS

Chemistry
2 answers:
Jobisdone [24]2 years ago
7 0

Answer:

Introduction

1. What was the purpose of the experiment?

Type your answer here:

The purpose of this experiment is test how much time does the hot water get vaporize.

2. What were the independent, dependent, and control variables in your investigation?

Type your answer here:

Dependent variable / Responding variable: Its response depends on any change in the independent variable. The dependent variable is the one that is being investigated, studied, and measured. It represents a quantity of something which value depends on how the independent variable is modified. It is usually identified by the letter Y.  A change in the dependent variable might be proportional or inversely proportional to the change in the manipulated variable. In the exposed example, the dependent variable is the egg circumference.

Experimental Methods

1. What tools did you use to collect your data?

Type your answer here:

Some hot water and ice cub and phone for set time…

2. Write your procedure. List each step so that another student could follow the procedure and repeat your experiment.

Type your answer here:

Gather all your materials.

Pour a small amount of hot water into the cup (it must be hot)

Place a second cup on top of the cup and cover, then tape the rim of the cup, or place plastic wrap on top of the cup and wrap the plastic wrap with tape.

Place an ice cube or two on the glass or plastic wrap.

Start the stopwatch.

Look for water droplets that form on the plastic wrap or the side of the cup. Stop the stopwatch when you see droplets form.

Data and Observations

1. Record your observations in a data table.

Type your answer here:

The first try I have wait 3min.  

The second try I have wait 30 sec.  

Conclusions

1. What conclusions can you draw about how the temperature of air affects the time for water vapor to condense when it mixes with warm, humid air? Write an evidence-based claim.

Type your answer here:

The warmer the air is water vapors will condense quicker when it mixes with human or warm air.

2. A cold front is the zone where a cold air mass is replacing a warmer air mass. What do you predict will happen to the weather at a cold front when the air is humid? Use cause-and-effect relationships and evidence from your experiment to support your prediction.

Type your answer here:

A cold weather front is defined as the changeover region where a cold air mass is replacing a warmer air mass. Cold weather fronts usually move from northwest to southeast. The air behind a cold front is colder and drier than the air in front.

Explanation:

I am from k12, from 1.12LabCondensation. Give me brainlist. but i only get 80%. this is my result. my friends

Lynna [10]2 years ago
4 0
:o oh wow this is… djdjd
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A factory discharges clean, warm water into a nearby stream. Fish keep dying in this part of stream. Explain why.
Ostrovityanka [42]

Answer:

the fish can't survive in that warm water

Explanation:

when the factory puts that warm water into the stream where the fish live they changed their environment. by adding unknown chemicals and changing the temp of the water the fish start to die.

The fish aren't used to living in that warm water, and if they can't adapt fast enough they will die, also the unknown chemicals that could be in the water will act as a poison for them making that stream unable to support any life.

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2 years ago
How many kg are in 50 lb luggage bag
Darya [45]
There are 0.454 kg in 1 lb

Cross multiply

0.454 kg = 1 lb
X kg. = 50 lb

50* 0.454 = 22.7 kg

Answer : 22.7 kg in 50 lbs
7 0
3 years ago
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The equilibrium constant for the formation of ammonia from nitrogen and hydrogen is 1.6 × 102. what is the form of the equilibri
Nimfa-mama [501]

Answer: The expression for equilibrium constant is \frac{[NH_3]^2}{[H_2]^3[N_2]}

Explanation: Equilibrium constant is the expression which relates the concentration of products and reactants preset at equilibrium at constant temperature. It is represented as k_c

For a general reaction:

aA+bB\rightleftharpoons cC+dD

The equilibrium constant is written as:

k_c=\frac{[C]^c[D]^d}{[A]^a[B]^b}

Chemical reaction for the formation of ammonia is:

N_2+3H_3\rightleftharpoons 2NH_3

k_c=1.6\times 10^2

Expression for k_c is:

k_c=\frac{[NH_3]^2}{[H_2]^3[N_2]}

1.6\times 10^2=\frac{[NH_3]^2}{[H_2]^3[N_2]}

8 0
3 years ago
Element X had a mass of 300g and a 1/2 life of 10 years. how many grams will remain after 40 years?
kiruha [24]
<h3>Answer:</h3>

18.75 grams

<h3>Explanation:</h3>
  • Half-life refers to the time taken by a radioactive material to decay by half of the original mass.
  • In this case, the half-life of element X is 10 years, which means it takes 10 years for a given mass of the element to decay by half of its original mass.
  • To calculate the amount that remained after decay we use;

Remaining mass = Original mass × (1/2)^n, where n is the number of half-lives

Number of half-lives = Time for the decay ÷ Half-life

                                 = 40 years ÷ 10 years

                                  = 4

Therefore;

Remaining mass = 300 g × (1/2)⁴

                            = 300 g × 1/16

                             = 18.75 g

Hence, a mass of 300 g of an element X decays to 18.75 g after 40 years.

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I think Bleach formula is <span>NaClO</span>
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