250 संतरे में से 50 संतरे एक कक्षा में बाँट दिए गए, तो कितने प्रतिशत संतरे बचे 1. 80% 2.25%

A loaded coal wagon with a total mass of 20 000 kg is pushed by a force of 300 000 N. What was the wagon’s acceleration?

AlexFokin [52]

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

$a = \frac{f}{m} \\$

f is the force

m is the mass

From the question we have

$a = \frac{300000}{20000} = \frac{30}{2} \\$

We have the final answer as

Hope this helps you

5 0

3 years ago

When two atoms form a covalent bond, they share electrons from all of their orbitals. All of their orbitals, in turn, combine to

erma4kov [3.2K]

Answer:

It's false.

Explanation:

Molecular orbital theory states that the number of molecular orbitals is equal to the number of atomic orbitals that overlap. The lowest energy molecular orbital is formed when two atomic orbitals that are in phase overlap, forming a bonding molecular orbital. However, another molecular orbital is also formed, called an anti-binding orbital.

So if an "n" quantity of atomic orbitals is combined, an "n" quantity of molecular orbitals is formed.

Have a nice day!

8 0

3 years ago

Conditions for an experimental chemistry reaction require a temperature of 300 K. The temperature in the lab is 55 F. Which of t

OLga [1]

The suggested answers are for K=298 degrees and the nearest correct answer seems to be increase the room temperature by 22 degrees Fahrenheit. But by calculation, for 300 K, then convert 300k to degrees Celsius = 300-273.15=26.85 degrees celsius. Then convert the 26.85 to degrees F, so F=9/5C + 32= 48.33+32=80.33-55F (present room temperature)=25.33 degrees F to increase the room temperature by.

6 0

3 years ago

Read 2 more answers

Predict the two most likely mechanisms for the reaction of 1-iodohexane with potassium tert-butoxide.

Rudiy27

Answer:

C) SN2 and E2

Explanation:

For this question, we have analyzed the substrate and the base/nucleophile. The substrate, in this case, is 1-iodohexane and the base/nucleophile is potassium tert-butoxide.

Substrate

In the 1-iodohexane the iodide "I" is bonded to a primary carbon (carbon 1). Therefore we will have a primary substrate. If we have a primary substrate an Sn1 can not take place. We can not have a primary carbocation due to this instability. So, we can disccard options A) and B).

Base/nucleophile

In the potassium tert-butoxide we have an ionic compound. A positive charge is placed in the potassium atom a negative charge is placed in the oxygen of the ter-butoxide ion. So, we will have a strong base (a molecule with the ability to remove electrons) and a strong nucleophile (a molecule with ability to bond with an electrophile). With all this in mind, we can not have an E1 reaction.

With both analyses, the answer is C).

See figure 1

I hope it helps!

6 0

3 years ago

"Which statement is true about the removal of a terminal phosphate" from ATP? Choose one: A. The reaction is associated with a p

Mamont248 [21]

Answer:

C. The reaction is energetically favorable.

Explanation:

The reaction which shows the removal of the terminal phosphate from the ATP is shown below:

$ATP+H_2O\rightarrow ADP+P_i+\ energy$

The Gibbs' free energy change of this reaction, $\Delta G^0=-7.3\ kcal/mol$

Hence, Option A is not correct.

It is a type of hydrolysis reaction in which water is being added to the molecule.

Hence, Option B is not correct.

The Gibbs' free energy change is negative which means that the reaction is energetically favorable.

Option C is correct.

6 0

4 years ago

250 संतरे में से 50 संतरे एक कक्षा में बाँट दिए गए, तो कितने प्रतिशत संतरे बचे 1. 80%2.25%​

250 संतरे में से 50 संतरे एक कक्षा में बाँट दिए गए, तो कितने प्रतिशत संतरे बचे 1. 80%2.25%