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3 years ago

What elements start with Ne

Chemistry

1 answer:

tatyana61 [14]3 years ago

3 0

The element that starts with Ne is Neon.

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Science begins with an observation, true or false?

JulijaS [17]

Answer:

true!

Explanation:

if youre going by the scientific method, observations are mainly first. then questions, research, etc

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3 years ago

What are the two different ions present in the compound al(no3)3?

Aleks [24]

$Al^{3+}$ and $NO_3^{-}$

Aluminum nitrate is an ionic compound, meaning that it is made up cations and anions. By convention when writing the formula for an ionic compounds the cation part shall be placed in front the anions. Thus the cation would contain aluminum and the anion shall be a polyatomic nitrate ion consisting of nitrogen and oxygen. The bracket with subscript 3 attached resembles the ratio between the two species, aluminum ions and nitrate ions. For each aluminum ion in the compound there shall be three corresponding nitrate ions.

Aluminum form ions of charge +3 whereas nitrate ions are of charge -1. Write the charge of the ion as the superscript in reverse (i.e., write $3+$ as in $Al^{3+}$ and $-$ in $NO_3^{-}$ , omitting any 1.)

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3 years ago

Sarita measures the mass and volume of a metal cube. The average mass is 25.3 +0.3 g. The average

Art [367]

Answer:

I beleive the first option is correct

8 0

3 years ago

What is the molecular formula for a compound with a molar mass of 42.08g/mol and an empirical formula of ch2

yan [13]

Answer:

$C_3H_6$

Explanation:

Hello!

In this case, since the empirical formula is the smallest representation of the molecular formula, it is known that the times in which the empirical formula is into the molecular formula is a whole number and is computed by dividing the molar mass of the molecular formula by that of the empirical formula as shown below:

$\frac{42.08g/mol}{12.01+1.01x2}= \frac{42.08g/mol}{14.03g/mol}=3$

Thus, the molecular formula times the empirical formula by 3 to obtain:

$C_3H_6$

Regards!

3 0

2 years ago

If x is a string, then x = new String("OH"); and x = "OH"; will accomplish the same thing. Group of answer choices True False

Vinvika [58]

Answer:

True is the correct answer to the above question.

Explanation:

If x is a string then it can be assigned by the help of two ways in java:
By the help of constructor:- When we write " x = new String("OH");", then it will create a pass a string "OH" into the constructor. It is because the String is a class in java and x is an object created by the constructor of the String class.
With the help of assigning: The "x= OH", which assigns the value of x which is an object of String class it can also use the constructor to initialize the "OH" string on the class.
The above question states the two scenarios which are defined above. Hence the question statement is true.

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3 years ago

Read 2 more answers