All categories

3 years ago

Help please, please,please. ....

Chemistry

1 answer:

Vaselesa [24]3 years ago

3 0

Answer:

the answer is nitrogen

Explanation:

u can right this for explain your answer-

( nitrogen is unreactive

nitrogen doesn't support burning )

orrrrr

(contains no oxygen

all the other jars contain oxygen)

You might be interested in

If the half-life of hydrogen-3 is 11.8 years, after two half-lives the radioactivity of a sample will be reduced to one-half of

maw [93]

Answer:

False

Explanation:

Half life is the time period at which the concentration of the radioactive substance in decay reduced to half.

Thus, if the hydrogen-3 has gone 2 half lives, it means that it has first reduced to its half and then again the half of what it was, i.e. 1/4

Thus, after two successive half-lives, the concentration must be 1/4 of the initial concentration and hence, the statement is false.

4 0

4 years ago

What does a positive H look like on a potential energy diagram?

Iteru [2.4K]

Answer:

D because i did this last week and got it right.

6 0

3 years ago

Given the formula representing a compound: what is a chemical name of this compound? 2-pentene 2-pentyne 3-pentene 3-pentyne

Aleks [24]

The question is incomplete. Complete question is attached below.
..........................................................................................................................

Correct Answer: Option 1) 2-pentene

Reason:
Following are the IUPAC rules for naming the compound
1) Select the longest carbon chain. In present case longest carbon chain has 5 carbon atom. Hence, it is a pentane derivative.
2) In case of alkene, replace 'e' of alkane by 'ene'
3) Give lowest number to function group. In present case, it is double bond.

Applying above rules, the IUPAC name of compound is 2-pentene

4 0

3 years ago

What coefficient is missing in C2H4 + (?)O2 → 2CO2 + 2H2O?

Daniel [21]

Answer:

Explanation:

you must multiply everything out till everything is equal on both sides

7 0

3 years ago

At which condition will the entropy of a pure solid be zero?

miss Akunina [59]

The condition at which the entropy of a pure solid will be zero is when a substance is at absolute zero. Absolute zero is the lowest temperature that is theoretically possible, at which the motion of particles which constitutes heat would be minimal. It is zero on the Kelvin scale, equivalent to −273.15°C.

5 0

3 years ago

Read 2 more answers

Help please, please,please. ....​

Help please, please,please. ....