All categories

3 years ago

Don’t waste your time answering with links because I won’t even open it. Plz just give a normal answer. Thanks.

Chemistry

2 answers:

Norma-Jean [14]3 years ago

3 0

im really sorry I need points so I’m answering this again really sorry!

Alexeev081 [22]3 years ago

3 0

Answer:

Not sure if you still need help, but here ya go. I'm not going to rewrite the chemical names, so this is the order of answers.

P2H6

NO3

N4H6

Explanation:

Just gotta break down the names and look at the roots. I'll walk through the first one.

ex) Diphosphorus hexahydride:

Di means two, and Phosphorus means just that, phosphorus. So we have two phosphorus, represented by P on the periodic table. So, P2

Hexa means 6, and hydride means hydrogen. We know this because we take the part of the word before 'ide' to get hydr, the first part of hydrogen.

Thus, we have six hydrogen, represents by an H on the periodic table. So, H6

Put it together, we have P2H6

Just have to do that to all the other ones. Look at the prefix to get the number of atoms, then the suffix to know what the atom is. That being said, KNOW YOUR PREFIXES or this gets really hard.

note: metals, if compound is ionic, are always first in the name

You might be interested in

How are physical and<br>chemical changes different?

astra-53 [7]

Physical changes happen when you do/mix something that can be reversed. Best example is ripping a paper, you can just tape it back together so it is just an observable thing that changes, which is a physical change. Chemical changes happen when you mix things and they make a new substance and can’t be reversed. The best example of this is the Statue of Liberty, which changed in color due to the chemical change between the oxygen and copper, which created a new substance (rust) which made it green instead of copper.
Sorry for the long answer but hope this helps!

5 0

3 years ago

What is the iupac name of:

exis [7]

Explanation:

saturated hydrocarbon

7 0

2 years ago

Problem Page A chemist measures the amount of bromine liquid produced during an experiment. He finds that of bromine liquid is p

masha68 [24]

The question is incomplete, here is the complete question:

A chemist measures the amount of bromine liquid produced during an experiment. She finds that 766.g of bromine liquid is produced. Calculate the number of moles of bromine liquid produced. Round your answer to 3 significant digits.

<u>Answer:</u> The amount of liquid bromine produced is 4.79 moles.

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

We are given:

Given mass of liquid bromine = 766. g

Molar mass of liquid bromine, $(Br_2)$ = 159.8 g/mol

Putting values in above equation, we get:

$\text{Moles of liquid bromine}=\frac{766.g}{159.8g/mol}=4.79mol$

Hence, the amount of liquid bromine produced is 4.79 moles.

6 0

3 years ago

Forests are the only carbon sinks on Earth. Please select the best answer from the choices provided T F

dmitriy555 [2]

False, as oceans can act as carbon sinks along with forests.

4 0

3 years ago

Read 2 more answers

A 7.5 L cylinder contains 5 moles of gas at a temperature of 274°C. What is its pressure in kiloPascals (kPa)?

AleksAgata [21]

<h3><u>Answer;</u></h3>

= 3032.15 kPa

<h3><u>Explanation;</u></h3>

Using the equation;

PV = nRT , where P is the pressure,. V is the volume, n is the number of moles and T is the temperature and R is the gas constant, 0.08206 L. atm. mol−1.

Volume = 7.5 L, T = 274 +273 = 547 K, N = 5 moles

Therefore;

Pressure = nRT/V

= (5 × 0.08206 × 547)/7.5 L

= 29.925 atm

But; 1 atm = 101325 pascals

Hence; Pressure = 3032150.63 pascals

<u>= 3032.15 kPa</u>

3 0

3 years ago