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3 years ago

How many oxygen atoms are there in the products of this equation: C6H12O6+6O2 ➪6CO2+6H2O+energy?

1 answer:

6 0

Glucose has a chemical formula of: C6H12O6 That means glucose is made of 6 carbon atoms, 12 hydrogen atoms and

(6 oxygen atoms)

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A Ca atom (atomic number = 20) is in the ground state. Light is shined on the atom, exciting the most energetic electron. Which

Vikentia [17]

Answer:

The possible quantum numbers for Ca atom when it is in excited

n = 4

l= 1

m =-1,0,1

Explanation:

Given that,

Atomic number = 20

The configuration of Ca

$Ca = 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2$

So, The principle quantum number is n =4.

The azimuthal quantum number can take value from 0,1,2...(n-1)

In the ground state, l= 0

When it is excited to p state

Then, l = 1

The magnetic quantum number can take value from l to -l

$m=1,0,-1$

Hence, The possible quantum numbers for Ca atom when it is in excited

n = 4

l= 1

m =-1,0,1

4 0

3 years ago

11. What's the best example of a source

earnstyle [38]

Answer:

D. A dry cell battery

Explanation:

A dry cell is a type of electric battery, commonly used for portable electrical devices. It was developed in 1886 by the German scientist Carl Gassner, after development of wet zinc-carbon batteries by Georges Leclanché in 1866.

3 0

3 years ago

20 pts

alexdok [17]

Answer: 2

Explanation:

3 0

3 years ago

An airplane propeller rotates with an angular speed of 260 rad/s though what angul does the propeller rotate in 5.0s? Give your

ch4aika [34]

Answer:

1300 rad ( $74522^{\circ}$ )

Explanation:

The angular speed of an object is the rate of change of angular position.

It is given by:

$\omega=\frac{\theta}{t}$

where

$\omega$ is the angular speed

$\theta$ is the angular displacement of the object

t is the time elapsed

For the propeller rotating in this problem, we have

$\omega=260 rad/s$ is the angular speed

t = 5.0 s is the time elapsed

Therefore, the angular displacement is:

$\theta=\omega t=(260)(5.0)=1300 rad$

And since $2\pi rad = 360^{\circ}$ , the angle in degrees is

$\theta=\frac{1300}{2\pi}(360)=74522^{\circ}$

7 0

4 years ago

During a lab, a student tapes a ruler to a lab table and sets the ruler in motion. A laser detector pointed at the ruler records

zimovet [89]

Answer:

Four; Two; One; Three

Explanation:

During a lab, a student tapes a ruler to a lab table and sets the ruler in motion. A laser detector pointed at the ruler records how many times the ruler vibrates back and forth in a period of time.

Pitch or frequency is defined as the number of cycles per unit time. We can calculate the pitch for each trials i.e.

Trial one, $pitch=\dfrac{10}{0.25}=40\ s^{-1}$

Trial two, $pitch=\dfrac{11}{0.30}=36.67\ s^{-1}$

Trial three, $pitch=\dfrac{13}{0.31}=41.93\ s^{-1}$

Trial four, $pitch=\dfrac{12}{0.33}=36.36\ s^{-1}$

Hence, the order of the trials from least to greatest pitch is :

Trial four, Trial two, Trial one and Trial three i.e. option (d) is correct.

6 0

4 years ago