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4 years ago

The first step in scientific inquiry would be

1 answer:

7 0

The first step in scientific inquiry or the scientific process is to pose or ask a question concerning a natural and or intriguing phenomenon. The subsequent steps involve formulating an hypothesis, and designing and then carrying out the experiment.

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HELPP WILL MAKRK BRAILLeST

Nina [5.8K]

B parts eroded by wind or water

4 0

3 years ago

Read 2 more answers

What influences attraction for electrons?

Troyanec [42]

If you are talking about bonds they are influenced by electronegativity and how many valence electrons they have.

7 0

3 years ago

Read 2 more answers

Write structural formulas for each of the possible isomers of n-hexene that are formed by moving the position of the double bond

dem82 [27]

Answer : The structural formulas for each of the possible isomers of n-hexene are shown below.

Explanation :

Isomer : It is defined as a molecule have the same molecular formula but the different chemical structure.

There are three structural isomers of n-hexene that is based on the location of the double-bonded carbon atoms with the other atoms.

In n-hexane, 'n' shows that the chain should be straight chain there is no branching.

The three structural isomers of n-hexene are:

(1) 1-hexene

(2) 2-hexene

(3) 3-hexene

Thus, the structural formulas for each of the possible isomers of n-hexene are shown below.

5 0

3 years ago

gA scientist is trying to discover information about an unknown metal in a compound. The formula for the compound is believed to

Hitman42 [59]

Solution :

It is given that :

The formula of the compound = $XBr_3$

And that 4.70 g of the sample contains $4.834 \times 10^{-2}$ mol of Br.

It means that :

1 mol of $XBr_3$ contains = 3 mol of Br

∴ 3 mol of $Br^-$ contain in 1 mol of $XBr_3$

$4.834 \times 10^{-2}$ mol of $Br^-$ contains $1.576 \times 10^{-2}$ mol of $XBr_3$

Thus the mol of $XBr_3$ = $1.576 \times 10^{-2}$ mol

The given mass is = 4.700 g

Therefore, the $\text{molar mass}$ of $XBr_3$ $=\frac{\text{mass}}{\text{mol}}$

$=\frac{4.700 \ g}{1.576 \times 10^{-2} \ mol}$

= 298.4 g/mol

So $\text{molar mass}$ of $XBr_3$ = $\text{molar mass}$ of X + 3 x $\text{molar mass}$ of Br

298.4 g/mol = $\text{molar mass}$ of X + 3 x 79.90 g/mol

298.4 g/mol = $\text{molar mass}$ of X + 239.7 g/mol

$\text{molar mass}$ of X = 58.71 g/mol (since 1 amu = 1 g/mol)

Therefore the atomic mass of the unknown metal = 58.71 g/mol

So the unknown meta is Nickel.

3 0

3 years ago

The displacement of a bromine atom by an amine is a substituion reaction. Write out the mechanism of this reaction (2-->3) Wh

weqwewe [10]

Answer:

An alkyl halide can undergo SN2 reaction with an amine

Explanation:

The displacement of a bromine atom by an an amine (step 2---> 3) in the reaction sequence is an example of an SN2 reaction in which the amine is the nucleophile.

The nitrogen atom of the amine which bears a lone pair of electrons functions as the nucleophile and attacks the electrophilic carbon atom of the alkyl halide displacing the bromide and creating a new Carbon-Nitrogen bond. An ammonium intermediate is immediately formed and the reaction is completed by the abstraction of a hydrogen by a base (such as excess amine present in the system).

This reaction is slower with t-BuNH2 because of steric hindrance and steric crowding in the transition state. SN2 reactions are faster with methylamine where the alkyl carbon is easily accessible.

The detailed mechanism of this reaction has been attached to this answer.

4 0

3 years ago