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Semenov [28]
4 years ago
15

Why should you clean up after every investigation

Chemistry
2 answers:
ella [17]4 years ago
8 0
<span>Why should you clean up after every investigation?

Simple, it is for safety ....and a clean classroom/lab</span>
8_murik_8 [283]4 years ago
6 0
You should clean up after every investigation because if you leave a mess, maybe another detective will come in and get lost because of the mess you left.
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What is the frequency of a radio wave with a a wavelength of 3 m? (Hint: MHz
Ostrovityanka [42]

Answer:
a. 1 x 10^8

Explanation:

100 MHz = 100,000,000 Hz = 10^8 Hz

4 0
2 years ago
Part A
PilotLPTM [1.2K]

Answer:

4200ml

Explanation:

Converting 3.1kg to g

3.1*1000= 3100g

Since density = mass/volume, then

volume = mass/ density

Therefore volume = 3100/0.74

= 4189.2ml

converting it to two significant figures

= 4200ml

6 0
2 years ago
There are many methods used to obtain energy for use in our our daily lives. Some of these methods have possible environmental c
Len [333]
(A)wind and solar should be the answer

8 0
3 years ago
How many particles of oxygen gas are in 22.0 grams of oxygen ?
lianna [129]

Moles of oxygen = 22g / 32 (Mr of O2)

Moles of oxygen = 0.7 moles (1 dp)

Avogadro's constant = 6.02×10^23 particles per mole

0.7 moles×(6.02×10^23) = Answer

This is assuming it wants O2, if it wants pure oxygen then replace 32 with 16.

5 0
2 years ago
How many grams are in 1.60 moles Hg(NO3)2
Ilia_Sergeevich [38]
Molar mass=MM

MM(Hg)=200.59g/mol
MM(N)=14.01g/mol
MM(O)=16.00g/mol

MM(Hg(NO3)2)=MM(Hg)+2*MM(N)+6*MM(O)=200.59g+2*14.01g+6*16g=324.61g/mol

1.60mol Hg(NO3)2*(324.61g/mol)=519.376 g=519 g Hg(NO3)2
6 0
3 years ago
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