Which of the following is not a balanced nuclear equation?
O a) 130 Sn + B + 1315b
d) 19Pt → 158 Os+ja
c) Be → 19 Li + AB
b) 2U → 1a +
234
90
Th
Ne

Answer:

chlorine

Explanation:

This is because the electronegativity increases from left to right and decreases from top to bottom of the periodic table.

Answer:

Chemists generally use the mole as the unit for the number of atoms or molecules of a material. One mole (abbreviated mol) is equal to 6.022×1023 molecular entities (Avogadro's number), and each element has a different molar mass depending on the weight of 6.022×1023 of its atoms (1 mole).\

Have a great day!!!!

Explanation:

1 mole of (NH₄)₂CO₃ has:

Let's consider the chemical formula of ammonium carbonate: (NH₄)₂CO₃.

The subscripts inform us of the number of moles of atoms in 1 mole of molecules.

Nitrogen has 2 subscripts: "1" (which is not written) and "2" (outside the parenthesis). The global subscript for nitrogen is obtained by multiplying both subscripts.

[tex]N: 1 \times 2 = 2[/tex]

Hydrogen has 2 subscripts: "4" and "2" (outside the parenthesis). The global subscript for nitrogen is obtained by multiplying both subscripts.

[tex]H: 4 \times 2 = 8[/tex]

The subscript for carbon is "1".

The subscript for oxygen is "3".

1 mole of (NH₄)₂CO₃ has:

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The net ionic equation for the reaction between iron (iii) sulfate and potassium hydroxide is

Fe³⁺(aq) + 3OH¯(aq) —> Fe(OH)₃(s) (Option B)

Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.

The reactants are located on the left side while the products are located on the right side.

Reactants —> Products

The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.

In solution

Fe₂(SO₄)₃ (aq) --> 2Fe³⁺(aq) + 3SO₄²⁻(aq)

KOH (aq) --> K⁺(aq) + OH¯(aq)

The reaction proceeds as follow

Fe₂(SO₄)₃ (aq) + KOH (aq) —>

Fe³⁺(aq) + SO₄²⁻(aq) + K⁺(aq) + OH¯(aq) —> Fe(OH)₃(s) + SO₄²⁻(aq) + K⁺(aq)

Cancel out the spectator ions (i.e SO₄²⁻ + K⁺) and balance to obtain the net ionic equation

Fe³⁺(aq) + 3OH¯(aq) —> Fe(OH)₃(s)

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Answer:

calcium

Explanation:

Answer:

A. Whenever the population has increased, steel consumption has increased as well.

Explanation:

Based on the graph of US population and steel consumption, what could have led to the increase in steel consumption seen  on the graph is that whenever the population has increased, steel consumption has increased as well.

A critical look at the graph, you will discover that the population and the steel consumption are moving upwards (i.e they are increasing). It's seen that as the population increases, steel consumption increases. This is true because as the population increases, people are building houses, more transportation systems that require steel are being manufactured, more household utensils that are steel products are being fabricated etc; therefore the consumption of steel increases.

Answer:

Hydrogen, lithium, sodium, and potassium all have 1 valence electron ( an electron in the outermost energy level is a valence electron).

Answer: C.

Explanation:

Answer: True

Explanation: The farther away from the center or heat.

Answer:

Yes

Explanation:

The equator is the imaginary belt around the earth and it is created and named because the sun mostly shines on that part/line making heat which causes it to be hot.

Answer:

Explanation:

The density of a substance can be found by using the formula

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

From the question we have

[tex]density = \frac{57.3}{6.3} \\ = 9.095238...[/tex]

We have the final answer as

Hope this helps you

d. Fe(s) and Al(s)

In the redox reaction, it is also known  

Reducing agents are substances that experience oxidation  

Oxidizing agents are substances that experience reduction

The metal activity series is expressed in voltaic series  

Li-K-Ba-Ca-Na-Mg-Al-Mn- (H2O) -Zn-Cr-Fe-Cd-Co-Ni-Sn-Pb- (H) -Cu-Hg-Ag-Pt-Au  

The more to the left, the metal is more reactive (easily release electrons) and the stronger reducing agent  

The more to the right, the metal is less reactive (harder to release electrons) and the stronger oxidizing agent

So that the metal located on the left can push the metal on the right in the redox reaction  

The electrodes which are easier to reduce than hydrogen (H), have E cells = +

The electrodes which are easier to oxidize than hydrogen have a sign E cell = -

So the above metals or metal ions will reduce Pb²⁺ (aq) will be located to the left of the Pb in the voltaic series or which have a more negative E cell value (greater reduction power)

The metal  : d. Fe(s) and Al(s)

Answer:

A.wood

Explanation:

It is a poor conductor of heat

Answer:

The oxidation state of nitrogen in NO changes from +2 to 0, and the oxidation state of carbon in CO changes from +2 to +4 as the reaction proceeds.

Explanation:

In the catalytic converter, the oxidation number of nitrogen in NO changes from +2 to 0, and of carbon in CO changes from +2 to +4 as the reaction proceeds. Thus, option C is correct.

The catalytic converter is a device used in vehicle exhaust to reduce the emission of toxic gas. The reaction in the device occurs to convert the nitric oxide into oxygen and nitrogen.

The redox reaction is given as,

2NO(g) + 2CO(g) → N₂(g) + 2CO₂(g)

In the reduction half of the reaction, the electrons are lost (addition of oxygen) like in carbon monoxide the oxygen is added that changes the number from +2 to +4. CO is a reducing agent that oxidized the carbon atom.

In the reduction half of the reaction, the oxygen is removed (electrons are added) and is shown by NO where the oxygen was lost to form N₂ with oxidation +2 to 0.

Therefore, option C. NO is a reducing agent that reduced nitrogen in the reaction.

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Answer: Al2O3

Explanation:

Answer:

Therefore 9 moles of nitrogen are required to produce 18 moles of ammonia.

Answer:

Gravitational to Mechanical to electrical

Explanation:

In a hydropower dam, the gravitational potential energy is converted to mechanical energy which in turn produces electrical energy.

Answer:

0.600 g/cm³

Explanation:

Step 1: Given data

Step 2: Calculate the volume of the cylinder

First, we have to determine the radius, which is half of the diameter.

r = d/2 = 2.34 cm/2 = 1.17 cm

Then, we use the formula for the volume of the cylinder.

V= π × r² × h

V= π × (1.17 cm)² × 6.62 cm

V = 28.5 cm³

Step 3: Calculate the density (ρ) of the sample

The density is equal to the mass divided by the volume.

ρ = m/V

ρ = 17.1 g/28.5 cm³

ρ = 0.600 g/cm³

Answer:

nm

Explanation:

trust me:)

Answer:

Explanation:

The momentum of an object can be found by using the formula

momentum = mass × velocity

From the question we have

momentum = 2 × 85

We have the final answer as

Hope this helps you

Answer:

The vacuole is the storage area of the cell. Most cells have one large vacuole. Vacuoles store food and other materials needed by the cell. They can also store waste products.

Explanation:

Answer:

648.7g of Mg must be added

Explanation:

Based on the reaction:

3Mg + 1/2P4 → Mg3P2

3 moles of Mg produce 1 mole of Mg3P2

To solve this problem we neeed to find the moles of Mg3P2 in 1200g. With these moles and the chemical reaction we can finf moles of Mg and its mass:

Moles Mg3P2 -Molar mass: 134.88g/mol-:

1200.0g Mg3P2 * (1mol / 134.88g) = 8.897 moles of Mg3P2

Moles Mg:

8.897 moles of Mg3P2 * (3mol Mg / 1mol Mg3P2) = 26.69 moles of Mg

Mass Mg -Molar mass: 24.305g/mol-:

26.69 moles of Mg * (24.305g / 1mol) =

Answer:

need points

Explanation:

Answer:

That animal is a Carnivore.

Explanation:

The skull is that of a Panther which is a carnivore. Hope this helps

Answer:

Customary

Explanation:

Answer:

Customary

Explanation:

answer: covalent bonds

Answer:c. oxygen,light,and glucose combine to produce high energy molecules

Explanation:

Answer:

hjgihgvoj

Explanation:

Explanation:

The first wave was found to have a wavelength of 3 x 10⁵ m and the second wave had a wavelength of 3 x 10⁴ m

We need to find which wave have a higher frequency.

The relation between frequency and wavelength is given by :

[tex]c=f\lambda[/tex]

Let f₁ and f₂ be the frequency of wave 1 and wave 2.

[tex]f_1=\dfrac{c}{\lambda_1}\\\\f_1=\dfrac{3\times 10^8}{3\times 10^5}\\\\=1000\ Hz[/tex]

And

[tex]f_2=\dfrac{c}{\lambda_2}\\\\f_2=\dfrac{3\times 10^8}{3\times 10^4}\\\\=10000\ Hz[/tex]

Hence, the wave having less wavelength will have higher frequency. The wave having wavelength 3 x 10⁴ m will have higher frequency.

Answer:

the type is single replacement

The given reaction equation represents a single-replacement reaction.

Explanation:

                   ABC→ A+B+C

                   A+B+C → ABC

                   AB+ C → AC + B

                  AB+ CD → AC + BD

Given:

[tex]Fe + CuCl_2 \rightarrow FeCl_2 + Cu[/tex]

To find:

The type of chemical reaction represented by the given equation.

Solution:

In the given reaction:

[tex]Fe + CuCl_2 \rightarrow FeCl_2 + Cu[/tex]

Iron is replacing copper from its compound which is copper(II) chloride to give iron(II) chloride and copper as a product.

So from this, we can conclude that the given reaction equation represents a single-replacement reaction.

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