Which reaction type? *

combination (synthesis)
combustion
decomposition
single replacement
double replacement

Answer:

Gold, Silver and Titanium

Explanation:

The most valuable metals in the list are:

Gold:

Its value makes it a good investment option. Gold can be used in many different ways, like in jewelry, electronics, medicine, etc.

Silver:

Similar to the case of gold, besides the common value of silver in jewelry, it can be also used in other ways, because it has a large thermal and electrical conductivity.

Finally, the titanium: It's price is actually close to the copper one, but for the cost of work with titanium (Titanium has a really large melting point, then melting it into ingots needs a lot of energy), the price of titanium is increased.

Answer: 1

Decimal Answer: 1.858

Answer:

The chemical name is magnesium chloride

Answer:

Magnesium chloride

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Answer:C

Explanation:

Got it right in usatestprep

The physical evidence that indicates that there has been a chemical reaction is that the beaker changes temperature and the correct option is option C.

Neutralization is a chemical reaction in which acid and base react to form salt and water. Hydrogen (H⁺) ions and hydroxide (OH⁻ ions) react with each other to form water.

The strong acid and strong base neutralization have a pH value of 7.

The beaker gets warm which indicates that the reaction between acid and base is an exothermic reaction releasing heat energy into the surroundings.

Therefore, The physical evidence that indicates that there has been a chemical reaction is that the beaker changes temperature and the correct option is option C.

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Answer: A solid silver, Ag, conducts electricity because it contains ions or electrons while solid silver chloride, AgCl, does not conduct electricity because AgCl does not dissociate to give ions or electrons.

Explanation:

Solid silver (Ag) is considered to be a good conductor of electricity because there are more number of free electrons or movable atoms are present in it.

As electricity is the flow of ions or electrons. So, more is the number of ions or electrons present in a substance more will be its conductivity.

Whereas solid silver chloride is a precipitate that is insoluble in water and therefore, it will not give ions or electrons.

As a result, silver chloride is not able to conduct electricity.

Answer:

A) BaCl2 + 2NaOH → Ba(OH)2 + 2NaCl

B) H2SO4 + 2KOH → K2SO4 + H2O

C) K2O3 + 2HCl → 2KCl + H2O + CO2

D) 2FeSO4 → Fe2O3 + SO2 + SO3

E) 2NaNO3 → 2 NaNO2 + O2

Explanation:

Answer:

A) BaCl² + 2NaOH → _Ba(OH)² + 2NaCl

B) H²SO⁴ + 2KOH → _K²SO⁴ + H²O

C) K²CO³ + 2HCl → _KCl + H²O + CO²

D) 2FeSO⁴ → _Fe²O³ + _SO² + _SO³

E) 2NaNO³ → 2NaNO² + _O²

Answer:

Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.

Explanation:

Mid-ocean ridges and seafloor spreading can also influence sea levels. As oceanic crust moves away from the shallow mid-ocean ridges, it cools and sinks as it becomes more dense. ... Seafloor spreading proves that the ocean itself is a site of tectonic activity.

Answer:

equal

Explanation:

Answer:

95.9793 g/mol

Explanation:

Answer:

Both

Explanation:

Please mark brailiest

Answer:

A shark is both

Explanation:

Answer:

Explanation:

The three of them increase from left to right across the periods of the periodic table, and at the same time, they decrease from up to down across the groups of the periodic table.

Ionization Energy is defined as the energy required to remove the atom of an electron.

Electron affinity is defined as the change in energy when electron is added to a negative ion.

Electronegativity is the ability of an atom to attract other atoms to itself.

Answer:

Natural Gas is a fossil energy source that formed deep beneath the Earth's surface. It is used in power plants to generate electricity by burning natural gas as their fuel.

Explanation: I hope this helped :)

Answer:

A molecule of natural gas is made up of carbon and hydrogen. When the hydrogen is segregated from the carbon and filled into a fuel cell, it fuses with oxygen to produce water, electricity, and heat. The carbon is released as carbon dioxide in smaller quantities than from gas turbines.

Explanation:

This is the site I got the info from :

How Natural Gas Works | Peak Oilhttps://www.peakoil.net › non-renewable › how-natural-g

dont use that link its bad

Answer:

Grinding the magnesium metal into a fine powder. I took the test and got it right.

The answer is A) 1 x 10-8 M.

Answer:

I believe its compaction

Explanation:

Compaction is how sedimentary rock is formedm

Answer:

The volume of the gas is approximately 4.41 liters

Explanation:

The details of the data of the Neon gas are;

The number of moles of Neon gas present, n = 11.6 moles

The temperature of the sample of Neon gas, T = 120 K

The pressure of the sample of the Neon gas, P = 25.6 atm

By the ideal gas equation, we have;

P·V = n·R·T

Where;

R = The universal gal constant = 0.08205 L·atm·mol⁻¹·K⁻¹

Therefore, we get;

V = n·R·T/P

Which gives;

V = 11.6 moles × 0.08205 L·atm·mol⁻¹·K⁻¹ × 120 K/(25.9 atm) ≈ 4.4097915 L

The volume of the gas, V ≈ 4.41 L.

Answer: The space occupied by the gas at 400 torr and [tex]25^{o}C[/tex] is 250 mL.

Explanation:

Given: [tex]V_{1}[/tex] = 250 mL,    [tex]P_{1}[/tex] = 800 torr,     [tex]T_{1} = 50^{o}C[/tex]

[tex]V_{2} = ?[/tex],         [tex]P_{2}[/tex] = 400 torr,        [tex]T_{2} = 25^{o}C[/tex]

Formula used is as follows.

[tex]\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}[/tex]

Substitute the values into above formula as follows.

[tex]\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}\\\frac{800 torr \times 250 mL}{50^{o}C} = \frac{400 torr \times V_{2}}{25^{o}C}\\V_{2} = 250 mL[/tex]

Thus, we can conclude that space occupied by the gas at 400 torr and [tex]25^{o}C[/tex] is 250 mL.

Answer:

0.109M

Explanation:

Find molarity of the solution:

Molarity is defined as the ratio between the moles of the solute (Lithium Chloride in this case) per liter of solution. To solve this question we have to find the moles of LiCl and its volume as follows:

Moles LiCl -Molar mass: 42.394g/mol-

2.3g * (1mol / 42.394g) = 0.0543 moles

Volume in liters:

500cm³ * (1L / 1000cm³) = 0.500L

Molarity:

0.0543 moles / 0.500L =

0.109M

Answer:

parallel circuit

Explanation:

Hope this is right!!

Answer:

[tex]\huge \fbox \pink {A}\huge \fbox \green {n}\huge \fbox \blue {s}\huge \fbox \red {w}\huge \fbox \purple {e}\huge \fbox \orange {r}[/tex]

A. Skin

Explanation:

Skin unlike teeth, bones & shells is fragile & get decomposed easily under the soil.

Answer:

um a I think because when you look at dinosaur you don't see their skin anymore just like the bones and teeth

Answer:

B A B  sorry if its wrong

Explanation:

Circuits can be connected in series or parallel but the maximum voltage is obtained in series connection, thus, light bulbs shine brightest in series connection.

A parallel circuit connection is one in which the terminals of all the components in th circuit meet at two points.

The components are parallel to each other and current flows in multiple directions.

A series connection in a circuit is one in which the terminals of the component parts in a circuit are joined end to end. Current flows in one direction.

The voltage in a series connection is the sum of all the individual cells, therefore, the light bulb in series connection shines brightest.

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Answer:

1.02 × 10⁻³ g

Explanation:

Step 1: Given data

Number of moles of titanium (IV) oxide in 1 jelly bean (n): 1.28 × 10⁻⁵ moles

Step 2: Calculate the mass (in grams) corresponding to 1.28 × 10⁻⁵ moles of TiO₂

To convert moles to mass, we need a conversion factor. In this case, it is the molar mass of TiO₂: 79.87 g/mol.

1.28 × 10⁻⁵ mol TiO₂ × 79.87 g TiO₂/1 mol TiO₂ = 1.02 × 10⁻³ g TiO₂

Answer:

94.2 g/mol

Explanation:

Ideal Gases Law can useful to solve this

P . V = n . R . T

We need to make some conversions

740 Torr . 1 atm/ 760 Torr = 0.974 atm

100°C + 273 = 373K

Let's replace the values

0.974 atm . 1 L = n . 0.082 L.atm/ mol.K . 373K

n will determine the number of moles

(0.974 atm . 1 L) / (0.082 L.atm/ mol.K . 373K)

n = 0.032 moles

This amount is the weigh for 3 g of gas. How many grams does 1 mol weighs?

Molecular weight → g/mol → 3 g/0.032 moles = 94.2 g/mol

Answer:

2H2+2O2=2H2O

Explanation:

hope this helps