1) the average rate of reaction in the first minute
2)the average rate of reaction in the second minute
3)the time when the reaction has completed
4)the average rate of reaction for overall reaction
5)the rate of reaction at 30 seconds
6)the rate of reaction at 105 seconds ​

1. 0+15+30+45+60=150/5=30 s

0+10+16+22+27=75/5=15 cm^3

then, 15/30= 0.5 cm^3/s(average rate of rxn)

2. 0+15+30+45+60+75+90+105+120=540/9=60 s

0+10+16+22+27+31.50+36+39.5+42=224/9=24.89cm^3

then, 24.89/60=0.414cm^3/s (avrg rate of rxn)

3. overall rxn add all the time divide by 12 and the volume add them too and divide by 12. after take average volume divide by the average time to get the average rate of overall rxn

4. 16/30= 0.533cm^3/s

5. 39.5/105= 0.37cm^3/s

A hypothetical element has two main isotopes with mass numbers of 59 and 62. If 73.00% of the isotopes have a mass number of 59 amu, what atomic weight should be listed on the periodic table for this element? Answer in units of amu.

In an ionic bond
a. electrons are shared equally
b. protons are transferred
c. electrons are shared unequally
d. electrons are transferred

A 15 % salt (NaCl)solution is made with 750.0 grams of solution. What is the mass of sodium chloride used to make the solution?

FAST I NEED THIS TO STUDY MY QUIZ IS TOMORROW!!!!
How is an atom’s atomic number related to its number of protons? To its number of electrons?

(13 POINTS + BRAINLIEST) On a hot and windy day a farmer is cleared all the grasses from a field next to a stream in order to plant some crops. He worked all day removing the grasses, and planting seeds for his next crop. The next day the farmer noticed that half of his field had eroded away. What choice below best describes why the river was able to erode so much of the field?

A.
The wind blew the freshly cleared dirt in the field away.

B.
The river was eroded the ground since the grasses and roots were removed.

C.
Animals dug into the freshly cleared dirt looking for food.

D.
The hot temperatures caused the ground to crack and fall apart.

Which statement describes an unanticipated impact of a technological
advance?
O A. Birds known as starlings were introduced to North America from
Europe and have since competed with native species for
resources.
O B. A laser system developed by NASA to help spaceships dock with
space stations was later adapted to help doctors perform eye
surgery.
O C. Used glass can be recycled as an additive to concrete, which gives
structures made of concrete more strength and better thermal
insulating properties.
O D. A network of undersea cables was constructed to provide Internet
connections between continents that are faster and more reliable
than other transmission methods.

Does changing the number of neutrons change the identity of the element you have built?

Which of the following contains the GREATEST number of atoms of argon gas?
20.0 g of Ar
5.0 L of Ar at STP
6.02 x 10^23 atoms of Ar
0.75 moles of Ar

What causes the change within every twenty four hours from day to night on Earth?
A)
Earth's rotation on its axis
the tilt of Earth on its axis
Tarth's revolution around the sun
the distance from Larth to the Sun
Tamashenomena on the top of the sun that appear as dark spots compar
Please answer

A sample of a gas occupies 6.00 liters at a temperature of 200 K. If the pressure remains constant and the temperature is raised to 600 K, the volume of gas sample would be 1.)18.0 L 2.)2.00 L 3.)3.00 L 4.)12.0 L​

what types of cells did Matthias Schleiden study?... HELP PLZ!!!

At the top of a hlgh mountaln, the welght of an object Is:
O the same as that at sea level
O less than at sea level
Ogreater than at sea level​

why does a liquid take the shape but not the volume of its container

The government, through the FCC (Federal Communications Commission), has set rules and guidelines for the use of radio equipment to better control wireless frequency "traffic".
A wireless server gives off 3.3 X 10-24 joules of energy. What is the wavelength of this server in meters?
Answer
A 22x10-57 m
B 60 X 10-52 m
5.0 X 100m
D 9.1 X1031m

A roller skater has a mass of 75 kg and accelerates at 1.5 m/s 2 squared. What is the net force acting on her?

Which of the following configurations would form a bent molecule?
A. A molecule with three bound atoms and no lone electron pairs
B. A molecule with two bound atoms and no lone electron pairs
C. A molecule with one bound atom and two lone electron pairs
D. A molecule with two bound atoms and one lone electron pair

The ___ has many functions; one is to regulate growth.

There is no pattern between boiling point and where the substance is located on the periodic table.
O True
O False

Directions: Use the words in the word box to complete the following sentences.
acceleration
gravity
counteract
resistance
balanced
force
When the forces acting on an object are _______________ , there is no change in the object's motion.
A _________________ acting on a resting object can cause the object to move.
On Earth, __________________ pulls all objects toward the ground.
When a force acts in the opposite direction of another force, the forces ______________ each other.
More than one force acting on a falling object can reduce its downward ____________________.
Air _____________________ is caused by molecules of air pushing against a moving object.

Selena breaks a piece off the end of a stick she found and notes that’s a physical change has occurred which of the following properties of the remaining piece of the stick has changed

The size of the gray circle represents atomic radius, or
the size of an atom. Which area of the periodic table
has elements with the largest atomic radius?

1. An atom has 57 neutrons and 42 protons. How many electrons will this atom have if it
neutral?
57
44
42
40

PLZ HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Burning is a type of_________reaction.

O replacement
O decomposition
O synthesis
O combustion

How many moles of NH3 can be produced from 3.76 moles of nitrogen
in the following reaction:
N2 (g) + 3 H2 (g) → 2 NH; (g)

If 130 J of energy were added to 1 kg of each of these samples, which would experience the GREATEST temperature
increase?

A) Aluminum
B) Brass
C) Copper
D) Platinum

HELP ME ASAP PLEASE IDK THIS

HELP!!!!PLEASE which to terms describe how waves the them blue light are different from waves of bright red light? A. Higher amplitude B. Lower amplitude C. Longer wavelength D. Shorter wavelength choose two answers

Which statements describe functions of the backbone? Check all that apply.
o It supports the body's weight.
O It helps to break down food.
It surrounds and protects the brain.
It replaces the spinal cord in vertebrates.
O It allows for flexibility and movement.
It helps regulates water balance.
The answer is it supports body weight and it allows flexibility and movement

The temperature at which a substance in its solid state melts into the same substance in a liquid is known as