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lesantik [10]
2 years ago
6

Waves in the ocean are 6m apart and pass a surfer every 2 s. what is the wave speed​

Chemistry
2 answers:
Nataly_w [17]2 years ago
8 0
  • Distance=6m
  • Time=2s

\\ \tt\hookrightarrow Speed=\dfrac{Distance}{Time}

\\ \tt\hookrightarrow Speed=\dfrac{6}{2}

\\ \tt\hookrightarrow Speed=3m/s

Evgesh-ka [11]2 years ago
3 0

Answer:

Given, Distance travelled(d)=6m

Time taken(t)=2sec

Speed(s)=?

We know that,

\purple {speed(s) =  \frac{distance \: travelled(d)}{time \: taken(t)}}

\purple{speed(s) =  \frac{6m}{2sec} }

\purple{speed(s) = 3 m /s}

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What is a molecular formula?
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The symbolic representation of its compound and its composition. 

or a chemical formula that indicates the kinds of atoms and the number of each kind in a molecule of a compound. 
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5 0
2 years ago
Of their
pishuonlain [190]

Answer:

the chemical equation of ethanol as fuel is

C2H5OH(l)+3 02(g)------2CO2(g)+3H2O(g)

the preparation process of ethanol from cassava is

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3 0
3 years ago
Many metals react with acids to produce hydrogen gas. A certain reaction produces 32.6 L of hydrogen gas at STP. How many moles
morpeh [17]

Answer: 1.46moles

Explanation:

Applying PV= nRT

P= 1atm, V= 32.6L, R= 0.082, T = 273K

Substitute and simplify

1×32.6/(0.082×273)=n

n= 1.46moles

4 0
3 years ago
ethanol is a common laboratory solvent and has a density of 0.789 g/mL. what is the mass, in grams, of 151 mL of ethanol
natta225 [31]
<em>V = 151 mL = 151 cm³</em>
<em>d = 0,789 g/mL = 0,789 g/cm³</em>
--------------------------------------

d = m/V
m = d×V
m = 0,789×151
<u>m = 119,139g</u>

3 0
3 years ago
Read 2 more answers
Describe how particles of iron (Fe) an oxygen (O2) react to how produce oxide (Fe2O3), also known as rust.
forsale [732]

Answer:

Described by a redox reaction below

Explanation:

Iron(III) oxide is an ionic compound, since it consists of a metal, iron, and a nonmetal, oxygen.

Ionic compounds are formed when metals lose their valence electrons in order to have an octet in their previous shell and donate them to nonmetal atoms, so that nonmetals fill their outer shell to have an octet.

As a result, positive ions (cations) and negative ions (anions) are formed. When iron reacts with oxygen, the following reaction takes place:

4 Fe (s) + 3 O_2 (g)\rightarrow 2 Fe_2O_3 (s)

This is a redox (oxidation–reduction) reaction, since we have electron loss and gain. Four iron atoms lose a total of 12 electrons to obtain a +3 charge in the final compound, while 3 oxygen molecules gain these 12 electrons to become 6 oxide anions with a -2 charge.

4 0
3 years ago
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