If an atom has 35 protons in the nucleus, how many will it have orbiting nucleus

Answers

Answer 1

Answer: It will have 35 ''electrons'' . Basically the number of protons in the nucleus of an atom is always equal to the number of electrons but its just that protons are positively charged and electrons are negatively charged.

Answer 2

Answer:

Final answer:

An atom is electrically neutral when it has an equivalent number of protons and electrons. Therefore, an atom with 35 protons in the nucleus will also have 35 electrons orbiting the nucleus.

Explanation:

In atomic theory, an atom is neutral when the number of protons present in the nucleus is equal to the number of electrons orbiting the nucleus. For example, hydrogen atoms all have one proton in the nucleus and one electron orbiting the nucleus. Therefore, if an atom has 35 protons in the nucleus, it will also have 35 electrons orbiting the nucleus. This is due to the characteristic of atomic structure that aims for neutrality by maintaining an equal number of positive protons and negative electrons.

Learn more about Atomic Structure here:

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What are the four states of matter?

Answers

Solid, Liquid, Gas, and Plasma

Describe how rows and columns in the modern periodic table are organized

Answers

They are organized by their atomic number

16 Which change results in the formation of different substances?(1) burning of propane(2) melting of NaCl (s)
(3) deposition of CO2(g)
(4) solidification of water

Answers

Answer:The correct answer is option (1).

Explanation:

Burning of propane in the presence of oxygen will form carbon-dioxide, water and heat.The chemical reaction can represented as in chemical equation:

$C_3H_8+5O_2\rightarrow 3CO_2+4H_2O+heat$

This is an example of chemical change where new product is formed.

Where as in melting of sold sodium chloride, deposition of carbon-dioxide gas and solidification of water ;phase of the substance is changing that is a physical change is taking place.

Hence, the correct option is (1).

1. The burning of propane creates different substances: propane and oxygen combine to create water and carbon dioxide:

C3H8 + 5 O2 becomes 3 CO2 + 4 H2O + heat

2. When NaCl melts, it is changing state, but it is still the same NaCl.

3. When gaseous CO2 deposits it is changing state, but it is still the same CO2.

4. When (presumably liquid) water solidifies, it is changing state, but it is still the same water.

So the answer is 1.

"A sphere of radius 0.50 m, temperature 27oC, and emissivity 0.85 is located in an environment of temperature 77oC. What is the net flow of energy transferred to the environment in 1 second?"

Answers

Explanation:

It is known that formula for area of a sphere is as follows.

A = $4 \pi r^(2)$

= $4 * 3.14 * (0.50 m)^(2)$

= 3.14 $m^(2)$

$T_(a)$ = (27 + 273.15) K = 300.15 K

T = (77 + 273.15) K = 350.15 K

Formula to calculate the net charge is as follows.

Q = $esA(T^(4) - T^(4)_(a))$

where, e = emissivity = 0.85

s = stefan-boltzmann constant = $5.6703 * 10^(-8) Wm^(-2) K^(-4)$

A = surface area

Hence, putting the given values into the above formula as follows.

Q = $esA(T^(4) - T^(4)_(a))$

= $0.85 * 5.6703 * 10^(-8) Wm^(-2) K^(-4) * 3.14 * ((350.15)^(4) - (300.15)^(4))$

= 1046.63 W

Therefore, we can conclude that the net flow of energy transferred to the environment in 1 second is 1046.63 W.

Why are x-rays telescopes and gamma-ray telescopes in space?

Answers

Because those can leak and cause cancer

How many grams of CaCl₂ should be dissolved in 500.0 mL of water to make a 0.20M solution of CaCl₂?

Answers

0.2M means 0.2mol CaCl2/1L solution.

This question didn't give us a density of the solution so needs an assumption that the solution has equal volume to water.

xmol/0.5L=0.2M
x = 0.1

0.1mol of CaCl2 is needed. Ca=40g/mol, Cl=35.5g/mol.
CaCl2 0.1mol = (40+35.5*2)*0.1=11.1g

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