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amid [387]
3 years ago
5

PEASE HELP!! I NEED THIS DUE BY THIS FRIDAY!!!!

Chemistry
2 answers:
elixir [45]3 years ago
6 0

Answer:

pat pat is most likely to have made the hydrochloric acid

Alekssandra [29.7K]3 years ago
6 0

Answer:

please im begging youif you already have the answer help a girl out and give the answers

Explanation:

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The velocity of a car changes from 10 m/s east to 30 m/s east in 4 seconds.
Blababa [14]

Answer:

5m/s²

Explanation:

Given parameters:

Initial velocity  = 10m/s due east

Final velocity  = 30m/s due east

Time = 4s

Unknown:

Acceleration of the car = ?

Solution:

Acceleration is the rate of change of velocity with time.

Mathematically;

 Acceleration  = \frac{v - u}{t}  

v is the final velocity

u is the initial velocity

t is the time taken

  Insert the parameters and solve;

  Acceleration  = \frac{30 - 10}{4}   = 5m/s²

3 0
3 years ago
When a drawing made with a black marker gets wet, the marker bleeds and more separates into several colors. What method of separ
Mnenie [13.5K]
This example is describing the Chromatography method. 
8 0
3 years ago
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Identify a chemical reagent used in this experiment that can be used to distinguish solid CaCl2 (soluble) from solid CaCO3 (inso
stiks02 [169]
A chemical reagent that is used in this experiment is silver nitrate (AgNO3). It is used to distinguish calcium chloride and calcium carbonate. when this reagent is used, silver from silver nitrate reacts with Chloride to calcium chloride and forms silver chloride, making a precipitates of white color.
6 0
3 years ago
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Two of the simplest compounds containing just carbon and hydrogen are methane and ethane. Methane contains 0.3357 g of hydrogen
Natasha_Volkova [10]
Let the ratio of grams of hydrogen per gram of carbon in methane be M, we know that:
M = 0.3357 g / 1 g

Next, lets represent the grams of hydrogen per gram of carbon in ethane be E. The final piece of information we have is:

M / E = 4/3

If we cross multiply,

3M = 4E

Now, substituting the value of M from earlier and solving for E,

E = (3 * 0.3357) / 4
E = 0.2518

There are 0.2518 grams of hydrogen per gram of carbon in ethane.
5 0
3 years ago
What is energy, what is power, and how are they related?
Romashka [77]

Answer:

Energy and power are closely related but are not the same physical quantity. Energy is the ability to cause change; power is the rate energy is moved, or used. Energy main article Energy is the ability to create a change, for example, creating motion. Tasks (like lifting a box) require an amount of energy to complete.

Explanation:

7 0
2 years ago
Read 2 more answers
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