this from ionic compounds escape room​

The correct statement : The atomic number of the radioactive nuclide is 90.

In the following element notation,

[tex]\large {{{A} \atop {Z}} \right X}[/tex]

X = symbol of elemental atom

A = mass number

   = number of protons + number of neutrons

Z = atomic number

   = number of protons = number of electrons, on neutral elements

The symbol for a radioactive nuclide :

[tex]\tt ^{234}_{90}Th[/tex]

atomic number  = 90

mass number  = 234

number of neutrons = 234-90=144

number of protons = atomic number = 90

Answer:

A on EDG

Explanation:

Answer:

[tex]\boxed {\boxed {\sf C. \ Lead-204}}[/tex]

Explanation:

One way of writing an isotope is hyphen notation or:

We know the mass number (protons and neutrons) is 204. We can automatically eliminate choices A and C, because they claim the mass number is 82.

Now we must find the element name. We know the atomic number or number of protons is 82. Look on the periodic table for the element with atomic number 82, which is lead.

Therefore,

The isotope notation in hyphen notation is: Lead-204

Answer:

An uninterruptible power supply can save data during an outage, and a surge protector can prevent damage from a surge. Surge protectors absorb or ground overvoltage from spikes. Each time a surge protector does its job, resulting damage can reduce effectiveness for the next surge.

Explanation:

Answer:

the answer is hot,dense points; each smaller than an atom

Explanation:

the big bang theory was proposed to suggest the expansion of the universe by describing the origin of all components of the universe and its planetary bodies. its suggested that the whole universe was in a state of high temperature and highly dense points (which were smaller than atoms) but continuously expanded by cooling down which gave rise to the formation of subatomic particles, atoms, etc.

btw I found this on brainly

Answer:

the correct answer is B.....please give me BRAINLEST

Explanation:

im so sorry for being so late to answer

Answer:

B

Explanation:

Answer:

Mass of reactant and mass of product must be equal.

Explanation:

Law of conservation of mass:

According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.

Explanation:

This law was given by French chemist  Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.

For example:

In given photosynthesis reaction:

6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂

there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction followed the law of conservation of mass.

Answer:

B

Explanation:

Atomic # = Protons

it says 4 p in the inside of the orbital

Answer:

Biosphere

Explanation:

The biosphere covers all living organisms on Earth. There is an estimated 20 million to 100 millions different species in the world organized into the 100 phyla that make up the five kingdoms of life forms. These organisms can be found in almost all parts of the geosphere.

5g

Anything between 4 and 6 is ok.

The additional mass of solute to be added will be determined by the mass of solute required to saturate a solution of NaNO3 in 100. grams of H2O.

A saturated solution is one that contains just as much solute as it can normally hold at a given temperature. We should now that when additional solute is added to a saturated solution, the additional solute does not dissolve.

The table is not presented hence the question is incomplete. However, the additional mass of solute to be added will be determined by the mass of solute required to saturate a solution of NaNO3 in 100. grams of H2O.

Learn more about solubility: https://brainly.com/question/953809

Answer:

No, it will not exist in real life

Explanation:

Let us consider the electronic configuration of magnesium; Ne 3s2

We must also assume that the compound Mg20 is ionic. If this is the case, then it involve Mg+ and O^2-.

The electronic configuration of Mg+ is Ne 3s1. We can see that this specie has not yet attained a stable noble gas configuration, As a result of this, the ion is not stable. Hence, Mg20 does not occur in real life,

Answer:

c. I, Br, Cl

Explanation:

The option C group of elements is expected to have the highest ionization energy.

Ionization energy is the energy needed to remove the most loosely held electron from an atom.

Answer:

Greater electronegativity and these are non metals.

Explanation:

Strontium ( Atomic Number 38 ) undergoes beta minus decay. Atomic mass of Strontium is 90 u. The given reaction shows the complete nuclear reaction of Strontium.

⁹⁰₃₈ Sr → ⁹⁰₃₇ Y + ⁰₋₁ β + ⁻∨ₑ

Beta particle β is a high speed electron. Whenever Strontium undergoes beta minus decay, the neutron located inside its nucleus gets converted into proton. During the same reaction, a beta particle and electron antineutrino are also being released or emitted.

In the nuclear reaction ( Beta minus decay ) of Strontium, mass and charge are conserved. 

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Answer:

Plants use carbon dioxide to make food.

Explanation:

Answer:B

Explanation: i did it

[tex]{ \qquad\qquad\huge\underline{{\sf Answer}}} [/tex]

Here's what we observed in the following two scenarios :

When the mixture of salt and sand is placed in a beaker, they form a heterogeneous mixture, and it is a bit troublesome to separate those two

But when water is added to the mixture, salt gets dissolved in it, whereas sand doesn't and it settles down with time, amd here we can easily separate sand and salt mixture, we just need to take out the water when sand has settled and just heat it to get salt back.

Answer:

a. 5.39 atm

Explanation:

Pressure = ?

Volume = 1 L

Temperature = 298 K

Mass = 9.70g

The formular relating these variables is the ideal gas equation;

PV = nRT

where R = gas constant = 0.082057 L.atm.K-1.mol-1

n can be obtained from the formular below;

n = mass / molar mass = 9.70 / 44

n = 0.2205 mol

P = nRT / V

P = 0.2205 * 0.082057 * 298 / 1

P = 5.392 atm

The correct option is option A.

Answer:

titanium

Explanation:

according to my knowledge titanium is more expensive than diamonds....A country becomes powerfull by having more quantity of titanium....all the bombs, nuclear weapons and nuclear enegry are made from titanium so it is expensive and powerfull too..

The carbon dioxide readily absorbs radiation with an energy of 4.67×10⁻²⁰J and wavelength is 7.04 x 10¹³, then the frequency is 4.26 x 10⁻¹¹ m.

Frequency can be defined as the number of occurrences of a repeating event per unit of time. It is also known as temporal frequency to emphasizes the contract to spatial frequency and can be called as ordinary frequency to emphasize the contract to angular frequency. It is denoted by f.

f = hc / ∧

f = 6.626 x 10⁻³⁴ x 3.0 x 10³ / 4.67 x 10⁻²⁰

f = 4.26 x 10⁻¹¹ m

Thus, carbon dioxide readily absorbs radiation with an energy of 4.67×10⁻²⁰J and wavelength is 7.04 x 10¹³, then the frequency is 4.26 x 10⁻¹¹ m.

To learn more about frequency, refer to the link below:

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Answer:

a. 5 protons and 5 neutrons

b. 11 protons and 13 neutrons

c. 27 protons and 32 neutrons

d. 82 protons and 126 neutrons

e. 92 protons and 143 neutrons

Explanation:

Using isotope notation:

ˣN

X = Amount of neutrons and protons

N is the atom. If N is nitrogen, the atomic number is 7, that means there are 7 protons.

X - Amount of protons = Neutrons

a. ¹⁰B. Atomic number = 5 = Number of protons

10 - 5 = 5 = Number of neutrons

5 protons and 5 neutrons

b. ²⁴N. Atomic number = 11 = Number of protons

24 - 11 = 13 = Number of neutrons

11 protons and 13 neutrons

c. ⁵⁹Co. Atomic number = 27 = Number of protons

59 - 27 = 32 = Number of neutrons

27 protons and 32 neutrons

d. ²⁰⁸Pb. Atomic number = 82 = Number of protons

208 - 82 = 126 = Number of neutrons

82 protons and 126 neutrons

e. ²³⁵U. Atomic number = 92 = Number of protons

235 - 92 = 143 = Number of neutrons

92 protons and 143 neutrons

Answer:

45460.9

Explanation:

Answer:

37854.12

Explanation:

for every 1 US gallon there is 3.78541 liters. So if there is 10,000 gallons, you would multiply 3.78541 by 10,000.

Answer:

19.6 J

Explanation:

The following data were obtained from the question:

Mass (m) of object = 2 Kg

Height (h) = 1 m

Workdone =?

NOTE: Acceleration due to gravity (g) = 9.8 m/s²

Thus, we can obtain the workdone in lifting the object by using the following formula:

Workdone = mgh

Workdone = 2 × 9.8 × 1

Workdone = 19.6 J

Therefore, the workdone in lifting the object to height of 1 m is 19.6 J

Answer:

The correct answer is 0.373 M.

Explanation:

The reaction will be,

H3PO4 (aq) + 3KOH (aq) ⇔ 3H2O (l) + K3PO4 (aq)

Based on the given information, the molarity of the solution KOH is 0.100 M, the volume of the solution given is 112 ml or 0.112 L.

The molarity of the solution with respect to KOH is,

M = Moles/Volume of Solution (liters)

Moles of solute = Molarity * Volume of solution

Moles = 0.100 M * 0.112 L

= 0.0112 moles

From the reaction it is clear that 3 moles of KOH needed 1 mole of H3PO4, thus, 0.0112 moles of KOH will require,

1/3 * 0.0112 = 0.00373 moles of H3PO4

The volume of the H3PO4 solution is 10 ml or 0.01 L.

The molarity of the solution will be,

M = Moles/ Volume of Solution (liters)

M = 0.00373/0.01 = 0.373 M

Thus, the concentration of the solution is 0.373 M.

The concentration of the H3PO4 would be 0.37 M

Going by the balanced equation of the reaction:

[tex]3KOH + H_3PO_4 ---> 3H_2O + K_3PO_4[/tex]

The mole ratio of KOH to H3PO4 is 3:1.

Using the equation: CaVa/CbVb = 1/3

What we are looking for is Ca:

Ca = CbVb/3Va

              = 0.1 x 112/3 x 10

                 = 0.37 M

More or calculations involving neutralization reactions can be found here: https://brainly.com/question/7305038?referrer=searchResults

Answer:

Mitosis

Mitosis is a method of cell division in which a cell divides and produces identical copies of itself.

Explanation:

Answer:

A

Explanation:

because they have 1 process

Answer:

Fractional distillation

Explanation:

Answer:

its 2.86 kg I believe.......

Answer: 14.52J

Explanation:

Answer: true

Explanation: In this example, the processes (perceive, process, and respond), are done in a matter of milliseconds, but reaction time can vary depending on a variety of factors: Complexity of the stimulus-The more complex the stimulus, the more information that has to be processed, the longer this process will take.

Answer:

0.49 mol HCl

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

18 g HCl

Step 2: Identify Conversions

Molar Mass of H - 1.01 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar mass of HCl - 1.01 + 35.45 = 36.46 g/mol

Step 3: Convert

[tex]18 \ g \ HCl(\frac{1 \ mol \ HCl}{36.46 \ g \ HCl} )[/tex] = 0.493692 mol HCl

Step 4: Check

Round our answer to 2 decimal places.

0.493692 mol HCl ≈ 0.49 mol HCl

Answer:

0.49 mol

Explanation:

Answer:

Charles's law

Explanation:

The expression:

     V1/T1 = V2/T2

represents Charles's law

The law states that "the volume of a fixed mass of a gas varies directly as its absolute temperature if the pressure is constant".

 So,

    V1/T1 = V2/T2

Pressure and the number of moles are constant

V and T are the volume and temperature

1 and 2 are the initial and final states.

Answer:

charle's law

Explanation:

Answer:

carbon dioxide

Explanation:

Putting the Brakes on Carbon Emissions

Every year, nuclear-generated electricity saves our atmosphere from more than 506 million metric tons of carbon dioxide, equivalent to taking more than 110 million passenger cars off the road.