- Write down Rutherford's atomic model with diagram .also write down defects of Rutherford's atomic model. - write down neil bohar atomic model

Answer:

Keep flammables away

Explanation:

this would avoid anything catching on fire or burning down

Given :

A balanced chemical equation :

[tex]Zn +Cl_2->ZnCl_2[/tex]

To Find :

How many grams of zinc are needed to produce 12 grams of zinc chloride.

Solution :

Moles of [tex]ZnCl_2[/tex] ,

[tex]n=\dfrac{Given \ wt}{Molecular\ Mass}\\\\n =\dfrac{12}{136.30}\ mol\\\\n=0.088\ mol[/tex]

Now, by balanced chemical equation we can say that 1 mol of Zn produce

1 mol of [tex]ZnCl_2[/tex] .

So, 0.088 mol of Zn is required to produced 0.088 mol of [tex]ZnCl_2[/tex] .

[tex]Mass \ required = molecular \ mass \times moles\\\\m = 65.38 \times 0.088\\\\m=5.8 \ gm[/tex]

Therefore, 5.8 grams of zinc is required.

Hence, this is the required solution.

Answer:

B. Electrons

Explanation:

Protons have a positive (+) charge.

Neutrons have a neutral (0) charge.

Electrons have a negative (-) charge.

Alpha Particles is a helium atom.

Gamma Rays are radiation.

Neutrino is Quantum Physics.

Answer:

42.3529412 m/min or 0.705882353 m/s

Explanation:

We can calculate speed using the following formula.

[tex]s=\frac{d}{t}[/tex]

where [tex]d[/tex] is distance and [tex]t[/tex] is time.

The Olympic swimmer can swim 360 meters in 8.5 minutes. Therefore,

[tex]d= 360 \ m \\t= 8.5 \ min[/tex]

Substitute the values into the formula.

[tex]s=\frac{360 \ m}{ 8.5 \ min}[/tex]

Divide.

[tex]s= 42.3529412 \ m / min[/tex]

Her speed is 42.3529412 meters per minute.

If we want to find her speed in meters per second, convert the minutes to second.

1 minute is equal to 60 seconds, so we can multiply 8.5 by 60.

[tex]8.5 *60=510[/tex]

The swimmer can swim 360 meters in 510 seconds.

[tex]s=\frac{d}{t}[/tex]

[tex]d= 360 \ m \\t= 510 \ s[/tex]

[tex]s=\frac{360 \ m}{510 \ s}[/tex]

[tex]s=0.705882353 \ m/s[/tex]

Her speed is also 0.705882353 meters per second.

Answer:

Analytical chemistry

Explanation:

because in analytical chemistry checks that different chemicals in water,salt etc....

Answer:

64 mL.

Explanation:

From the question given above, the dimension of box is:

Dimension = 2 cm × 4 cm × 8 cm

Thus, the volume of the box is:

Volume = 2 cm × 4 cm × 8 cm

Volume = 64 cm³

Finally, we shall convert 64 cm³ to mL. This can be obtained as follow:

Recall:

1 cm³ = 1 mL

Therefore,

64 cm³ = 64 cm³ × 1 mL / 1 cm³

64 cm³ = 64 mL

Therefore, the volume of the box in millilitres (mL) is 64 mL.

Answer:

Use a giant magnet to pick up the iron and nickel ones, leaving the aluminum behind.

Explanation:

Stay safe!

Answer:

Explanation:

1. It is five valence electrons.

2. It is four valence electrons.

3. It is six valence electrons.

4. It is two valence electrons.

I do hope I helped you! :)

Answer:

1. c

2. b

3. a

4.d

Explanation:

False.

It won’t become one if it’s not proven true.

Answer:

The answer is

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

[tex]volume = \frac{mass}{density} [/tex]

From the question

mass of substance = 5668 g

Density = 3.56 g/mL

The volume is

[tex]volume = \frac{5668}{3.56} \\ = 1592.1348314[/tex]

We have the final answer as

Hope this helps you

Answer:

6. Scientific inquiry - D

7. Hypothesis - E

8.  Control group - G

9. Experimental group - A

10. Independent variable - B

11. Dependent variable - H

12. Scientific theory - C

13. Scientific law - F

Explanation:

6. Scientific inquiry - D

Scientific inquiry is the study of the explanation for the natural world phenomenon and it requires many scientific steps.

7. Hypothesis - E

A hypothesis is a possible explanation for a phenomenon or problem. It is tested in order to see if true or not.

8.  Control group - G

The control group in a scientific experiment is a group of subjects did not get the treatment and left alone.

9. Experimental group - A

The experimental group is another hand group of subjects that gets treatment and shows the effect of the variable being tested.

10. Independent variable - B

Independent variables change or manipulated during an experiment and cause a response from the dependent variable.

11. Dependent variable - H

The dependent variable is a variable that is dependent on independent variables and changes in the independent variable.

12. Scientific theory - C

A well-tested explanation for experimental results with the scientific process.

13. Scientific law - F

This describes an observed pattern in nature

Answer:

sorry but dorks dont learn maths

Explanation:

just kidding no offense but i think umm 1st one will stay same

i searched google

Answer:

environmentalism I think

Explanation:

...................

Answer:

2nd choice answer

Explanation:

thats ez tbh

Answer:

1. B   2. B   3. C   4. A     5. A

Explanation:

1 Which atom contains exactly 16 neutrons?

Neutrons = Mass Number - Proton

A -33;

Neutrons = 33 - 16 = 17

B P-31

Neutrons = 31 - 15 = 16 Correct option

C O-16

Neutrons = 16 - 8  = 8

D Cl – 35

Neutrons = 35 - 17 = 18

2. In a mass spectrometer, the heaviest particles are least deflected and that with the least mass are deflected the most. The correct option is B.

3. 1 mol of C = 12 grams;

3 mol = x

x = 3 * 12 = 36 grams Correct option is C

4. 1 mol = 27g of Al;

x mol = 65g

x = 65 / 27 = 2.4 moles. Correct option is A.

5. There are 6.022 x 10^23 atoms in 23 grams of sodium;

x atoms in 4.5g

x = 6.022 x 10^23 * 4.5 / 23 = 1.2 x 10^23 atoms Correct option is option A.

Answer:

An electrolytic cell uses electrical energy to drive a non-spontaneous redox reaction. An electrolytic cell is a kind of electrochemical cell. ... The electrolyte is usually a solution of water or other solvents in which ions are dissolved. Molten salts such as sodium chloride are also electrolytes.

Explanation:

Explanation:

An electrolytic cell has three component parts: an electrolyte and two electrodes (a cathode and an anode). The electrolyte is usually a solution of water or other solvents in which ions are dissolved. Molten salts such as sodium chloride are also electrolytes.

Answer:

septembar 9 2003

Explanation:

he died in september 9 2003

Answer:

Your answer:

His cause of death was a stroke ( heart attack)

hope this helped you

please mark as the brainliest (ㆁωㆁ)

Given :

Half-life of Iodine , [tex]t_{0.5}=8 \ days[/tex] .

Initial concentration , [tex][A_o]=100\ mg[/tex] .

To Find :

The amount of sample remains after 32 days .

Solution :

Rate constant is given by :

[tex]k=\dfrac{0.693}{t_{0.5}}\\\\k=\dfrac{0.693}{8}\ s^{-1}\\\\k=0.086625\ s^{-1}[/tex]

Now , by rate law :

[tex][A]=[A_o]e^{-kt}[/tex]

Putting all given values, we get :

[tex][A]=100\times e^{-(0.086625)\times 32}\\[/tex]

[tex][A]=6.25\ mg[/tex]

Therefore , the remaining sample after 32 days is 6.25 mg .

Hence , this is the required solution .

Answer:

A) The temperature at which the particles of matter are at their lowest energy points.

Explanation:

Absolute temperature refers to the lowest  possible temperature. At this state,  no heat energy remains in the substance; the energy of the particles are at their lowest energy points.

Answer:

C. accuracy of the data sample size of the data

Explanation:

Measuring instruments, such as rulers and graduated cylinders, are often used in experiments to increase the accuracy of the data sample size which is usually gotten from the taken reading.

Measuring instruments such as rulers have accurate readings which makes measurements in any form very easy and more accuracy.

Answer:

Healthy kidneys clean your blood and remove extra fluid in the form of urine. They also make substances that keep your body healthy. Dialysis replaces some of these functions when your kidneys no longer work. There are two different types of dialysis - hemodialysis and peritoneal dialysis. The following is about hemodialysis.

Answer:

2000 km/sec

1km=1000m

2000×1000

2000,000 m/sec

Answer: 6

Explanation:

Because it's 6 after the decimal