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sergejj [24]
2 years ago
13

HALPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP!!!!!!!!!!!!!!!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
What does a negative slope on a distance versus time graph represent?
Constant time
Constant distance
Distance decreasing over time
Distance increasing over time
Chemistry
1 answer:
Vilka [71]2 years ago
3 0

Answer:

in position and time graphs the slope of line indicates the velocity

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Complete the chemical formula for each ionic compound. Consult the periodic table to help you answer the question. beryllium nit
Montano1993 [528]

The answers would be:

Be₃N₂

Al₂S₃

Here's more about the question:

To find the chemical formula first you need to know the charges. You can do that by first figuring out the transfer of valence electrons of each so that it can complete the octet rule.

Let's start with Beryllium Nitride

Beryllium is a cation with a charge of 2+ and Nitrogen is an anion with a charge of 3-.

We write charges as superscripts:

Be³⁺ N²⁻

Now to get the formula, all you need to do is exchange superscripts but write them as subscripts.

Be₂N₃

Let's do the second one:

Aluminum sulfide

Another way I do this though, is just think of the first element and think about how many valence electrons it has, this is how many it can give away.

When you think about the second element, think about how many valence electrons it has, then think how many does it need to have 8.

Aluminum has 3 valence electrons (It can give away 3)

Sulfur has 6 valence electrons, (it needs 2 to complete 8)

Now those are your superscripts!

Al³⁺S²⁻

Then exchange!

Al₂S₃

4 0
2 years ago
Read 2 more answers
Aspirin synthesis involves the addition of an acetyl group to salicylic acid in a condensation reaction with an alcohol. The ace
BARSIC [14]

Answer:

The correct appropriate will be Option 1 (Acid anhydrides are less stable than esters so the equilibrium favors the ester product.)

Explanation:

  • Acid anhydride, instead of just a carboxyl group, is typically favored for esterification. The predominant theory would be that Anhydride acid is somewhat more volatile than acid. This is favored equilibrium changes more toward the right of the whole ester structure.
  • Extremely responsive than carboxylic acid become acid anhydride as well as acyl chloride. Thus, for esterification, individuals were most favored.

The other options offered are not relevant to something like the scenario presented. So, the solution here is just the right one.

3 0
2 years ago
6. Un volumen de 1.0 mL de agua de mar contiene casi 4 x 10-12 g de Au. El volumen total de agua en los océanos es de 1.5 x 1021
Aleks [24]

Answer:

The total amount of Au is $ 2.0\times10^{24}

Explanation:

Given that,

Mass of 1.0 ml of Au m=4\times10^{-2}\ g

Total volume of water in oceans V=1.5\times10^{21}\ L

We need to calculate the volume in ml

Using given volume

V=1.5\times10^{21}\times1000\ mL

V=1.5\times10^{24}\ mL

We need to calculate the total mass of Au  

Using given data

1\ ml\ volume = 4\times10^{-2}\ g

1.5\times10^{24}\ ml=4\times10^{-2}\times1.5\times10^{24}

So, The total mass of Au is 6\times10^{22}\ g

The mass will be in ounce,

Mass=0.035274\times6\times10^{22}

Mass=2.12\times10^{21}\ ounce

The total amount of the Au Will be

Total\ amount=2.12\times10^{21}\times948

Total\ amount=2.0\times10^{24}

Hence, The total amount of Au is $ 2.0\times10^{24}

3 0
2 years ago
Based on the crystal-field strengths cl- < f- < h2o < nh3 < h2nc2h4nh2, which octahedral ti (iii) complex below has
kati45 [8]
<span>Based on the crystal field strength, Cl ligand would give the longest d-d transition when complexed with Ti(III). as this is the weak field ligand and would cause minimum splitting of d orbitals.</span>
8 0
2 years ago
How many moles of O2 should be supplied to burn 1 mol of C3H8 (propane) molecules in a camping stove
Shkiper50 [21]
The combustion of any hydrocarbon yields water and carbon dioxide. We will now construct a balanced equation:

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O

Each mole of propane requires 5 moles of oxygen.
4 0
2 years ago
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