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3 years ago

WHATS THE LAST OPTION HELP ASAP I WILL MARK BRAINLIEST

Chemistry

2 answers:

RideAnS [48]3 years ago

6 0

I agree with person as well SI-28

MArishka [77]3 years ago

3 0

Answer:

SI-28

Explanation:

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Give the formula of the alkanes his molecule contains 28 hydrogen atoms

suter [353]

Answer:

jayfeather friend me

Explanation:

Table 1. Summary of the Straight-Chain Alkanes

Name Formula Number of Structural Isomers

Octadecane C18H38

Nonadecane C19H40

Eicosane C20H42 366,319 (!)

29 more rows

4 0

3 years ago

The speed of light in a vacuum is 2.998 x 108 m/s. What is its speed in (a) km/h; (b) mi/min?

love history [14]

Answer :

(a) The speed of light in km/hr is, $10.7928\times 10^8Km/hr$

(b) The speed of light in mi/min is, $1.117\times 10^7mi/min$

Explanation :

(a) We are given the speed of light is, $2.998\times 10^8m/s$

As we know that,

$1m=\frac{1}{1000}m$

and,

$1s=\frac{1}{3600}hr$

By using both the conversion, we get:

$2.998\times 10^8m/s$

$\Rightarrow \frac{2.998\times 10^8m}{1s}\times \frac{3600s}{1hr}\times \frac{1km}{1000m}$

$\Rightarrow 10.7928\times 10^8Km/hr$

The speed of light in km/hr is, $10.7928\times 10^8Km/hr$

(b) We are given the speed of light is, $2.998\times 10^8m/s$

As we know that,

$1m=\frac{1}{1609.34}mi$

and,

$1s=\frac{1}{60}min$

By using both the conversion, we get:

$2.998\times 10^8m/s$

$\Rightarrow \frac{2.998\times 10^8m}{1s}\times \frac{60s}{1min}\times \frac{1mi}{1609.34m}$

$\Rightarrow 1.117\times 10^7mi/min$

The speed of light in mi/min is, $1.117\times 10^7mi/min$

5 0

3 years ago

6. what is the metric system prefix for the quantity 0.000 001? a) centi- b) deci- c) kilo- d) micro-

Sergeeva-Olga [200]

The metric system prefix for the above quantity would be D. Micro. Which is 10^-6.

8 0

4 years ago

Read 2 more answers

The area of a telescope lens is 6.668 × 103 mm2. What is the area in square feet (ft2)? Enter your answer in scientific notation

ollegr [7]

Answer:

$7.13\times 10^{-2}\ ft^2$

Explanation:

The area of a telescope lens is 6.668 × 10³ mm²

We need to convert the area in ft².

We know that,

$1\ mm^2=1.07\times 10^{-5}\ ft^2$

It means,

$6.668 \times 10^3\ mm^2=6.668 \times 10^3\times 1.07\times 10^{-5}\ ft^2\\\\=0.0713\ ft^2$

$0.0713\ ft^2=7.13\times 10^{-2}\ ft^2$

So, the required answer is $7.13\times 10^{-2}\ ft^2$ .

3 0

3 years ago

Which is one way that waves erode coastlines?

topjm [15]

Answer:

Four main processes erode the destructive waves; hydraulic action, compression, abrasion and attrition. Hydraulic Action is the sheer force of water crashing off the coastline causing the material to dislodge and be carried away by the sea.

8 0

3 years ago