If a motorcyclist accelerates from rest to 40 m/s in 8 seconds, what is their acceleration?

What is lassaigne's test?

krek1111 [17]

Answer:

The Lassaigne's test, also known as

the sodium fusion test, is used in

elemental analysis to determine the

presenceof foreign elements,

specifically halogens, nitrogen, and

sulfur, in an organic compound.

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☆Hope it helps

☆Have a great day!!

3 0

3 years ago

What is ionic bond,,,?

andreev551 [17]

Answer:

An ionic bond is the bonding between a non-metal and a metal, that occurs when charged atoms (ions) attract.

Explanation:

Here I put the function of Iconic Bond.

Ionic bonds form so that the outermost energy level of atoms are filled. Ion. an atom or group of atoms that bring out a positive or negative electric charge as a result of having lost or gained one or more electrons.

Therefore, I hope this helps!

7 0

3 years ago

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Which of the compounds found in wood are difficult to degrade (or break apart)? (select all that apply.)?

Lera25 [3.4K]

There are four major components found in wood, and these are:

cellulose

lignin

starch

protein

Among the four, I believe that cellulose and lignin are the most difficult to degrade because they contain large amount of cross-linked heavy hydrocarbons.

Answer:

cellulose

lignin

3 0

3 years ago

Read that From picture and tell me the answer please

Dafna11 [192]

Answer:

1g Hydrogen

Explanation:

<h3>Getting to the equation:</h3>

Calcium in water reacts vigorously to give a cloudy white Precipitate (compound) called Calcium hydroxide alongwith the evolution of Hydrogen gas.

$\boxed{ \mathsf{Ca + H_2O \rightarrow Ca(OH)_2 + H_2}}$

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

<h3>Balancing the equation: </h3>

This reaction is not in it's balanced form! The number of atoms of Hydrogen on the left is 2 while that on the right is 4,I.e.,they're not equal.

Adding a 2 in front of H2O solves the problem by making the number of atoms of each element on both the sides equal.

$\mathsf{Ca +2 H_2O \rightarrow Ca(OH)_2 + H_2}$

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

<h3>Observations:</h3>

Looking into the equation more carefully, we see:

1 atom of Calcium reacts with 2 molecules of water to give 1 molecule of Calcium Hydroxide alongwith 1 molecule of Hydrogen gas.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

<h3>Gram atomic and molecular masses </h3>

Mass of one atom of Calcium = it's gram atomic mass

= 40 g

Mass of one "molecule" of Hydrogen

= it's Gram molecular mass

= gram mass of one atom × number of atoms in one molecule

= 1 × 2

= 2 g

So,

according to our observation:

One atoms of Calcium gives one molecule of Hydrogen (during the particular reaction)

=> 40g of Calcium gives = 2g of Hydrogen

•°• 1 g of Calcium gives = $\frac{2}{40}$

= $\frac{1}{20}$ g Hydrogen

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<h3>Answer:</h3>

We're provided with 20g of Calcium,

=> 20g of Calcium gives = 20 × $\frac{1}{20}$ g H2

= 1 g H2

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Hope this helps!

6 0

3 years ago

What type of decay process is demonstrated in the following reaction 40 -19K to 0 -1e+40-20Ca?

Dmitry_Shevchenko [17]

The decay process that is demonstrated by the equation above would be a beta decay. This type of radioactive decay involves the emission of a beta particle. It happens when one of the protons is transformed in the other. The beta particle here is represented by 0 -1e.

3 0

3 years ago

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