Standard 1.11
The blue and red parts of the atoms represent the?

Answers

Answer 1

Answer: The number of protons in the nucleus for that element

Related Questions

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Calculate the pOH of a 0.410 M Ba(OH)2 solution.
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What can happen when a fission chain reaction gets out of control? This can cause a loss of heat. This can cause an explosion. This can cause extreme cooling of radioactive waste. This can cause a rapid decrease in pressure. This can cause neutrons to combine to form new atoms.

The vapor pressure of a liquid is 0.92 atm at 60°C. The normal boiling point of the liquid could be(1) 35°C (3) 55°C(2) 45°C (4) 65°C

Answers

The answer is (4) 65°C. For this question, you need to know that the definition of boiling is when a liquid's vapor pressure equals atmospheric pressure. Normal boiling point just means boiling point at sea level, when atmospheric pressure is 1atm. For this particular liquid, you would need to raise the temperature a little for the vapor pressure to rise to 1atm (because vapor pressure increases with temperature). Therefore your temperature must be higher than 60°C, and the only such choice available to you is (4).

Answer:

4 ¥

TRUST REASON

The answer is 4 because when the vapor pressure is in liquid form, the boiling point would be the hottest point

An igneous rock originally has 3 grams of uranium 238 in it. When dated the rock only contains 1.8 grams. What are the parent and daughter concentrations (in percentages) and what is its age?

Answers

Answer :

The parent and daughter concentrations (in percentages) is, 60 % and 40 % respectively.

The age of rock is $3.32* 10^9\text{ years}$

Explanation :

First we have to calculate the parent and daughter concentrations (in percentages).

$\text{Parent concentrations}=(1.8g)/(3g)* 100=60\%$

and,

$\text{Daughter concentrations}=((3-1.8)g)/(3g)* 100=40\%$

As we know that, the half-life of uranium-238 = $4.5* 10^9$ years

Now we have to calculate the rate constant, we use the formula :

$k=(0.693)/(t_(1/2))$

$k=\frac{0.693}{4.5* 10^9\text{ years}}$

$k=1.54* 10^(-10)\text{ years}^(-1)$

Now we have to calculate the time passed.

Expression for rate law for first order kinetics is given by:

$t=(2.303)/(k)\log(a)/(a-x)$

where,

k = rate constant = $1.54* 10^(-10)\text{ years}^(-1)$

t = time passed by the sample = ?

a = initial amount of the reactant = 3 g

a - x = amount left after decay process = 1.8 g

Now put all the given values in above equation, we get

$t=(2.303)/(1.54* 10^(-10))\log(3)/(1.8)$

$t=3.32* 10^9\text{ years}$

Therefore, the age of rock is $3.32* 10^9\text{ years}$

What are particles of carbon otherwise known as, and what kind of pollution do they cause???

Answers

Particles of carbon can also be called co2 or also a greenhouse gas. The emission of carbon into the atmosphere causes air pollution and can also lead to global warming.

Carbon otherwise known as CO2 causes an greenhouse effect( which thickens our atmosphere) , causing the heat absorbed from the sun in our atmosphere to be trapped and resulting in global warming

Which of the following compounds will experience dipole-dipole forces of attraction? Cl2
NaCl
H2S
C2H4

Answers

NaCl and H2S will experience dipole-dipole interaction because they are permanently polarized.

NaCl and H2s are the answers

Select the correct answer from each drop-down menu.Much of the mass of an atom is concentrated in its nucleus. The nucleus contains (blank), and the outer part of the atom contains (blank)

Answers

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, Much of the mass of an atom is concentrated in its nucleus. The nucleus contains protons and neutrons and the outer part of the atom contains electrons.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit. Electron has -1 charge while proton has +1 charge. Neutron is neutral.

Much of the mass of an atom is concentrated in its nucleus. The nucleus contains protons and neutrons and the outer part of the atom contains electrons.

Therefore, much of the mass of an atom is concentrated in its nucleus. The nucleus contains protons and neutrons and the outer part of the atom contains electrons.

To know more about atom, here:

brainly.com/question/13518322

#SPJ2

Answer: 1) The answer is: c) protons and neutrons.

2) The answer is: a) electrons.

Explanation:

2Al + 6HCl → 2AlCl3 + 3H2 If 3.0 grams of H2 were produced, how many grams of Al reacted? (Molar mass of Al = 27 g/mol, molar mass of H2 = 2.0 g/mol) ___ grams