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tekilochka [14]
3 years ago
10

The motion of a toy truck was investigated. The total distance covered vs. time was recorded in the table.

Chemistry
1 answer:
DIA [1.3K]3 years ago
3 0

Answer:

Where the chart pls I can answer

Explanation:

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Suppose you did the lab and someone came and said your unknown acid sample was
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Answer:

I will love to help but I don't understand the question

7 0
3 years ago
Read 2 more answers
The following is known as the thermite reaction: 2Al(s)+Fe2O3(s)→Al2O3(s)+2Fe(s) This highly exothermic reaction is used for wel
Colt1911 [192]

Answer:

\Delta H_{rxn}=-847.6\ KJ/mol.

Explanation:

The balanced chemical equation is:

2Al(s)+Fe_2O_3(s)-->Al_2O_3+2Fe(s)

Now, standard values of \Delta H_f\ of\ all\ participants\ of\ reaction.

\Delta H_f(Al_2O_3)=-1669.8\ KJ/mol\\\Delta H_f(Fe_2O_3)=-822.2\ KJ/mol\\\Delta H_f(Al(s))=0\ KJ/mol\\\Delta H_f(Fe(s))=0\ KJ/mol\\

Now, We know \Delta H_{rxn}=\Delta H_{products}-\Delta H_{reactants}

Putting all values of \Delta H_f to above equation.

We get,

\Delta H_{rxn}=-847.6\ KJ/mol.

Hence, this is the required solution.

6 0
4 years ago
Why does 5060 have three significant figures?
Morgarella [4.7K]
<h2>5060 have three significant figures : Explanation given below </h2>

Explanation:

Significant figures

The significant figures (also known as the significant digits and decimal places) of a number are digits that possess certain  meaning .

It  includes all digits except: zeros

Rules to find significant figures

1.All non-zero digits are considered significant. For example, 23  has two significant figures.

2.Zeros in between two non-zero digits are significant: like in 202.1201  has seven significant figures.

3.Zeros to the left of the significant figures are not significant. For example, .000021 has two significant figures, zeros have no value .

4.Zeros to the right of the significant figures are significant.

That is the reason in number 5060 , it has 3 significant figures .

3 0
3 years ago
Are pterosaurs more closely related to turtles or to crocodilians? Explain your answer.
Reptile [31]

Answer:

Pterosaurs are more closely related to crocodilians. They share a more recent common ancestor than do pterosaurs and turtles.

Explanation:

Hope this Helps! :)

8 0
3 years ago
How many miles are there if you have 70.5g of Nacl
GenaCL600 [577]
70.5g x 1 mol / 58.5g = 1.2mol of nacl
4 0
3 years ago
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