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dedylja [7]
3 years ago
6

How does the scientific process generally begin

Chemistry
1 answer:
e-lub [12.9K]3 years ago
7 0
It begins by trying to solve a problem and or making a hypothesis.
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Which of the following is the largest volume?
Artist 52 [7]
I will use this conversion:

1m = 1000 mm => 1 = 1m / 1000mm

1 m = 100 cm=> 1 = 1m / 100cm

1m = 10 dm=> 1 = 1m / 10 dm

So,

B) 3.8 * 10^7 cm^3 = 3.8 * 10^7 cm^3 * [1m / 100cm]^3 = 38 m^3

C) 3.8 * 10^5 dm^3 * [1m / 10 dm]^3 = 380 m^3

D) 3.8 * 10^8 mm^3 * [1m / 1000 mm]^3 = 0.38 m^3

Now you can compare the four volumes and conclude which is the largest.

Answer: option C) 3.8 * 10^5 dm^3
5 0
3 years ago
If 8.2 mL of 0.055 M NaOH is required to titrate a 5.5 mL sample of potassium bitartrate, what is the [K +]?
ipn [44]

Answer:

.082 M

Explanation:

You just do C1V1=C2V2

7 0
2 years ago
`Silver salts have antimicrobial properties--they can kill bacteria by interfering with certain proteins. Silver nitrate used to
Lostsunrise [7]

Answer:

3.6 × 10²⁴ atoms of O

Explanation:

Let's consider the molecular formula of silver nitrate: AgNO₃.

We can establish the following relations:

  • 1 mol of AgNO₃ has 6.02 × 10²³ molecules of AgNO₃ (Avogadro's number).
  • 1 molecule of AgNO₃ has 3 atoms of oxygen.

The atoms of oxygen in 2.0 moles of silver nitrate are:

2.0molAgNO_{3}.\frac{6.02\times10^{23}moleculeAgNO_{3}  }{1molAgNO_{3}} .\frac{3atomO}{1moleculeAgNO_{3}} =3.6\times10^{24}atomO

3 0
3 years ago
In which type of chemical bonding are electrons shared between adjacent atoms?
Vikki [24]
In covalent bonding electrons are shared betweed adjacent atoms.

This kind of bonding means that none of the atoms are detached from its electrons.

A molecule of compound is formed when two or more atoms are bonded through covalent bonds. The electrons shared are considered part of the valence electrons (outer energy level) of both atoms forming the covalent bonding.
3 0
3 years ago
Calculate the mass in grams of each of the followinga. 5.94 x 10^20 H2O2 moleculesb. 2.8 x 10^22 SO2 moleculesc. 4.5 x 10^25 O3
ryzh [129]

Answer:

0.0335\ \text{g}

2.978\ \text{g}

3586.84\ \text{g}

0.0026\ \text{g}

Explanation:

Mass in grams is given by

m=\dfrac{nM}{N_A}

where

n = Number of molecules

N_A = Avogadro's number = 6.022\times 10^{23}\ \text{mol}^{-1}

M = Molar mass of molecule

Molar mass of H_2O_2 = 34.0147 g/mol

n=5.94\times 10^{20}

m=\dfrac{5.94\times 10^{20}\times 34.0147}{6.022\times 10^{23}}\\\Rightarrow m=0.0335\ \text{g}

Mass of H_2O_2=0.0335\ \text{g}

Molar mass of SO_2 = 64.066 g/mol

n=2.8\times 10^{22}

m=\dfrac{2.8\times 10^{22}\times 64.066}{6.022\times 10^{23}}\\\Rightarrow m=2.978\ \text{g}

Mass of SO_2=2.978\ \text{g}

Molar mass of O_3 = 48 g/mol

n=4.5\times 10^{25}

m=\dfrac{4.5\times 10^{25}\times 48}{6.022\times 10^{23}}\\\Rightarrow m=3586.84\ \text{g}

Mass of O_3=3586.84\ \text{g}

Molar mass of CH_4 = 16.04 g/mol

n= 9.85\times 10^{19}

m=\dfrac{9.85\times 10^{19}\times 16.04}{6.022\times 10^{23}}\\\Rightarrow m=0.0026\ \text{g}

Mass of CH_4=0.0026\ \text{g}

4 0
3 years ago
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