Ask question

Ask question

All categories

3 years ago

15

The data table for the decomposition reaction of hydrogen peroxide H2 O2 shows how the reaction rate changes over time which sta

tement describes the conclusion you can sharpen the table

2 answers:

WITCHER [35]3 years ago

5 0

Answer:

<em>A. The rate of reaction slows down</em>

Explanation:

Ap.Ex

DedPeter [7]3 years ago

4 0

I believe the answer is A.

You might be interested in

Intersystem crossing is:

Semenov [28]

An intersystem crossing (ISC) is a non-radiative process that involves the transition between two electronic states with different spin multiplicity. That is, when an electron is excited in a molecule in a basal singlet state (either by absorption or radiation) into a state of greater energy, an excited singlet or triplet state can be obtained.

Therefore, ISC is understood as an a non radio active transition between states with different spin multiplicity.

Correct answer is C: a radiative transition between states with the same spin.

8 0

4 years ago

A level curve on a country road has a radius of 150 m. What is the maximum speed at which this curve can be safely negotiated on

SSSSS [86.1K]

The maximum speed of the car is 24.3 m/s

Explanation:

For a car moving along an unbanked turn, the frictional force provides the centripetal force required to keep the car in circular motion. Therefore, we can write:

$\mu mg = m\frac{v^2}{r}$

where the term on the left is the frictional force while the term on the right is the centripetal force, and where

$\mu=0.40$ is the coefficient of friction between the tires and the road

m is the mass of the car

$g=9.8 m/s^2$ is the acceleration of gravity

v is the speed of the car

r = 150 m is the radius of the curve

Solving for v, we find the (maximum) speed at which the car can move along the turn:

$v=\sqrt{\mu gr}=\sqrt{(0.40)(9.8)(150)}=24.3 m/s$

For speed larger than this value, the frictional force is no longer enough to keep the car along the turn.

Learn more about circular motion:

brainly.com/question/2562955

brainly.com/question/6372960

#LearnwithBrainly

8 0

3 years ago

Mature salmon swim upstream, returning to spawn at their birthplace. During the arduous trip they leap vertically upward over wa

patriot [66]

Answer:

The minimum speed is 7.5 m/s.

Explanation:

Given that,

Height = 2.87 m

We need to calculate the minimum speed

Using equation of motion

$v^2=u^2-2gh$

$u=\sqrt{2gh}$

Where, u = minimum velocity

g = acceleration due to gravity

h = height

Put the value into the formula

$u=\sqrt{2\times9.8\times2.87}$

$u=7.5\ m/s$

Hence, The minimum speed is 7.5 m/s.

5 0

4 years ago

A(n) ____ is a collection of 105 to 106 stars in a region 10 to 30 pc in diameter. The stars in the collection tend to be more t

prisoha [69]

Answer:

Open cluster

Explanation:

<u>Open cluster is the group of stars of number up to few thousand which were formed from same cloud and had approximately same age. They are mostly red and yellow stars and these stars are bound loosely by the mutual gravitational attraction</u> and the stars become disrupted by the close encounters with other clouds of gas and clusters ss these stars orbit galactic center.

6 0

3 years ago

Explain why atomic radius decreases as you move to the right across a period for main-group elements but not for transition elem

Aleksandr-060686 [28]

Answer:

Explained.

Explanation:

Only the first question has been answered

In a period from left to right the nuclear charge increases and hence nucleus size is compressed. Thus, atomic radius decreases.

In transition elements, electrons in ns^2 orbital remain same which is the outer most orbital having 2 electrons and the electrons are added to (n-1) d orbital. So, outer orbital electron experience almost same nuclear attraction and thus size remains constant.

7 0

3 years ago