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antiseptic1488 [7]
3 years ago
9

1.How far can you travel if you drive 4 hours and can average 120 Km/hr?

Chemistry
2 answers:
forsale [732]3 years ago
8 0

Answer:

B

Explanation:

D=S×T

=120km/h×4hrs

=480km

alexandr1967 [171]3 years ago
3 0

Answer:

the answer is b

Explanation:

this is the answer :)

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H2CO3(aq) → CO2(aq) + H2O(l) After strenuous exercise, you breathe heavily, exhaling and removing CO2 from your body. The remova
Aleksandr-060686 [28]

Answer:

did you find the answer

Explanation:

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6 0
2 years ago
5400 L to KL<br> With work??
Gnesinka [82]

Answer:

5.4KL

Explanation:

Divide by 1000

3 0
2 years ago
How many moles of al does 13.49 g of al represent?
Harlamova29_29 [7]
Use equation
number of moles= sample mass/molar mass
7 0
2 years ago
The absorbance (????)(A) of a solution is defined as ????=log10(????0????) A=log10⁡(I0I) where ????0I0 is the incident‑light int
bulgar [2K]

Answer:

The absorbance of the myoglobin solution across a 1 cm path is 0.84.

Explanation:

Beer-Lambert's law :

Formula used :

A=\epsilon \times c\times l

A=\log \frac{I_o}{I}

\log \frac{I_o}{I}=\epsilon \times c\times l

where,

A = absorbance of solution

c = concentration of solution

\epsilon = Molar absorption coefficient

l = path length

I_o = incident light

I = transmitted light

Given :

l = 1 cm, c = 1 mg/mL ,\epsilon = 15,000 M^{-1}cm^{-1}

Molar mass of myoglobin = 17.8 kDa = 17.8 kg/mol=17800 g/mol

(1 Da = 1 g/mol)

c = 1 mg /mL = {1mg /mL}{\text{Molar mass of myoglobin}}

c = \frac{1 mg/mL}{ 17800 g/mol} = 5.6179\times 10^{-5} mol/L

1 mg = 0.001 g, 1 mL = 0.001 L

A= 15,000 M^{-1}cm^{-1}\times 5.6179\times 10^{-5} mol/L\times 1 cm

A=0.8426 \approx 0.84

The absorbance of the myoglobin solution across a 1 cm path is 0.84.

5 0
3 years ago
How many different substituents are required on a carbon atom for it to be chiral?
zheka24 [161]

Four different substituents are required on a carbon atom for it to be chiral.

<h3>What is Chiral Carbons ?</h3>

The carbon atom which is attached with four different types of group of atoms or atoms is called Chiral carbon. Chiral molecules are non superimposable on their mirror images. Chiral carbon is also called asymmetric carbon.

Example:

Br - \underset{H} {\underset{|} {\overset{CH_3}  {\overset{|}{C}}}} - Cl

In the above example we can see that carbon atom has 4 different group attached with it that is Br, Cl, H, CH₃.

Thus from the above conclusion we can say that Four different substituents are required on a carbon atom for it to be chiral.

Learn more about the Chiral carbon here: brainly.com/question/1195366

#SPJ4

6 0
1 year ago
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