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Hunter-Best [27]
4 years ago
10

An experiment that uses sound or reliable scientific principles includes the important step of scientists communicating ideas an

d experimental results. Provide 2 examples of how scientists can communicate their data with each other.
Chemistry
1 answer:
Alina [70]4 years ago
5 0

the use of Morse codes in communicating with one another

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How many grams of ammonia (NH3) will produce<br> 300 grams of N2?<br> 4NH3 + 6NO → 5N2 + 6H2O
jeka57 [31]
Molar mass

NH3 = 17 g/mol
N2 = 28 g/mol

4 NH3 + 6 NO = 5 N2 + 6 H2O

4 x 17 g NH3 ------------ 5 x 28 g N2
?? g NH3 --------------- 300 g N2

300 x 4 x 17 / 5 x 28 =

20400 / 140 => 145.71 g of NH3


6 0
4 years ago
I don’t understand this one at all
harkovskaia [24]

Answer:

NaF(aq)

Explanation:

When sodium bromide react with fluorine sodium fluoride is formed. Florine is more reactive than bromine that's why it displace the bromine and form compound with sodium.

Chemical reaction:

NaBr(aq)  + F₂(aq)  →  NaF(aq)  + Br₂(aq)

Balanced chemical equation:

2NaBr(aq)  + F₂(aq)  →  2NaF(aq)  + Br₂(aq)

Sodium is alkali metal and have one valance electron. It loses one electron and show +1 charge. While all halogen elements need one electron to complete the octet and show -1 charge.

That's why one halogen atom is combine with one sodium atom to make overall compound neutral.

3 0
3 years ago
What are the differences between HDL and LDL?​
il63 [147K]

Answer:

LDL is

low density lipid

HDL is

high density lipid

Explanation:

HDL helps rid your body is excess cholesterol so so it won't end up in your arteries

LDL is also called "bad cholesterol" because it takes cholesterol to your arteries

6 0
4 years ago
I’m not good at chemistry
dimulka [17.4K]

Answer:

λ = 5.56 × 10⁻³ m

Explanation:

You have to use the formula c = λv to solve the problem.  Review what you are given.  You are given v and c, where v = 5.40 × 10¹⁰ Hz and c = 3.00 × 10⁸ m/s.  The value c is for the speed of light and is something you need to memorize.  You will use it often in physics and sometimes in chemistry.

Now that you figured out what you know, you can see that there is only one unknown, allowing you to solve.

c = λv

λ = c/v

λ = (3.00 × 10⁸ m/s)/(5.40 × 10¹⁰ Hz)

λ = 5.56 × 10⁻³ m

5 0
3 years ago
Calculate the number of joules released when 72.5 grams of water at 95.0 degrees Celsius cools to a final temperature of 28.0 de
Airida [17]
Water's specific heat capacity is 4200 J/Kg°C
95-28=67
72.5grams in kg is 0.0725kg
Energy = 67×0.0725×4200
Energy = 20,401.5 J or 20.4015 kJ
7 0
3 years ago
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