Hi I need help!!!!! pleaseeeeeeeee!

Answer:

That should be crucible tong

Answer:

C. Al

Explanation:

2Al+ 3H2SO4(l)------> Al2(SO4)3+ 3H2

Answer:

A. force is the ability to change an objects motion

Explanation:

sana po makatulong

Answer:

Martin Luther King, Jr. worked hard to bring greater equality to America and ensure civil rights for all people, regardless of race.

Answer:

[tex] {S}^{16} [/tex]

group 16 period 2 of the periodic table

note: that is not the electronic configuration, that is the Bohr model.

There are various kind of elements that are present in periodic table. Some elements are harmful, some are radioactive, some are noble gases. Sulfur is the correct answer for our given question

Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.

We can find any element in periodic table if its electronic configuration is given. From electronic configuration, we can find the group number and the period number. So, according to our question the configuration is 2,8,6. Form here we can say that  atomic number of element is 16 and the valence electron is 6 so the only group in the periodic table that has valence electron 6 is the group 16 that is oxygen family.

Therefore Element is sulfur and is found in group 16 and period 2

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Answer:

20 / 33

Explanation:

Have a great day

Brainlyest plz

Answer:

yes

Explanation:

Answer:

It changes size and shape

Explanation:

Proving Air Is Matter

One way to prove that air is made of matter is to blow up a balloon. Before you add air into the balloon, it is empty and shapeless. When you puff air into it, the balloon expands, so you know it is filled with something—air is taking up the space.

Answer:

Yes they are found in same period

Answer:

alkali metals

Explanation:

Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).

Answer:

Explanation:

Ca = +2

P = -3

Se = 0

NH3=

N = -3 , H = +1 , H3 = 3 x +1 = +3

-3 + (+3) = 0

NH3 = 0

NF3

N = -3, F = -1 , F3 = 3 x (-1) = -3

-3 + -3 = -6

Al2(CO3)3

CO3

C= +4, O = -2, O3 = 3 x (-2) = -6

CO3 = +4 + (-6) = +4 - 6 = -2

(CO3)3 = 3 x (-2) = -6

Al = +3, Al2 = 2 x (+3) = +6

Al2(CO3)3 = +6 + (-6)= 0

Answer:

the organisms themselves,other organisms,interactions between living organisms, and even their waste.

The effects of long-term exposure to mustard gas causes mortality and chronic respiratory disease.

Exposure to mustard gas in the long term can result in mortality from influenza, pneumonia as well as chronic breathing disease. Exposure for long term leads to respiratory complications and septic shock. Extensive breathing in the environment of mustard gas can cause chronic respiratory disease, respiratory infections or death.

Extensive eye exposure to this gas can cause permanent blindness. Exposure to mustard gas may also increase the chances of lung and respiratory cancer so we can conclude that mustard gas is lethal and can cause a number of diseases in a person who is exposed to it.

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A 3.00-L container with O₂ at 4.00 atm is connected to a 2.00-L container with Ne at 2.00 atm, resulting in a final pressure of 3.20 atm in the container.

We have 2 containers connected by a valve.

One container has a volume of 3.00 L and contains O₂ at 4.00 atm. The other container has a volume of 2.00 L and contains Ne at 2.00 atm.

When the valve is opened, the total volume is the sum of the 2 containers.

[tex]V_2 = 3.00 L + 2.00 L = 5.00 L[/tex]

Assuming constant temperature and ideal behavior, we can calculate the final pressure of each gas using Boyle's law.

O₂

[tex]P_1 \times V_1 = P_2 \times V_2\\\\P_2 = \frac{P_1 \times V_1}{V_2} = \frac{4.00atm \times 3.00L}{5.00L} = 2.40atm[/tex]

Ne

[tex]P_1 \times V_1 = P_2 \times V_2\\\\P_2 = \frac{P_1 \times V_1}{V_2} = \frac{2.00atm \times 2.00L}{5.00L} = 0.800atm[/tex]

The final pressure in the container will be the sum of the final pressures of the gases.

[tex]P = 2.40 atm + 0.800 atm = 3.20 atm[/tex]

A 3.00-L container with O₂ at 4.00 atm is connected to a 2.00-L container with Ne at 2.00 atm, resulting in a final pressure of 3.20 atm in the container.

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Explanation:

I think

maganese is +7 and Nitrogen is +5

sorry if I am incorrect I haven't done chemistry in a year

btw for chemistry if you need help with equations I used this equation balancer called chemical aid it helps

In Mn3N4, the compound consists of three manganese (Mn) atoms and four nitrogen (N) atoms.

To determine the oxidation numbers, we can assign x as the oxidation number for manganese and y as the oxidation number for nitrogen.

Since the compound is neutral overall, the sum of the oxidation numbers must equal zero.

For the three manganese atoms:

3x = 0

x = 0

For the four nitrogen atoms:

4y = 0

y = 0

Therefore, the oxidation numbers for manganese (Mn) and nitrogen (N) in Mn3N4 are both 0.

Answer:

Groups: The vertical column of the periodic table that signifies the number of valence electrons in an element.

Period: The horizontal rows in the periodic table that signify the number of electron shells in an element.

Explanation:

Answer:Groups: The vertical column of the periodic table that signifies the number of valence electrons in an element. Periods: The horizontal rows in the periodic table that signify the number of electron shells in an element.

Explanation:

The table has seven rows and 18 columns. Each row represents one period; the period number of an element indicates how many of its energy levels house electrons.The columns of the table represent groups, or families, of elements.

Answer:

q

=

64 kJ this is answer. .

Answer:

no ofcourse not!

Explanation:

Answer:

no

Explanation:

the universe is way too big, maybe not in a conventional form but there are definitely aliens

Answer:

Explanation:

Q3.What did you observe about the wavelengths and frequencies of the different colors of light?

Q4. Do the frequencies of colors of light increase from red to violet?

Q5. What did you observe about the corresponding energies from red to violet?

wavelength times frequency =c=the speed of light

the higher the frequency, the shorter the wavelength

the different colors of visible  light are our good friend ROY G BIV

RED  ORANGE  YELLOW   GREEN   BLUE   INDIGO   VIOLET

As we go from red to violet, the wavelength decreases and the energy increases because the wave is vibrating at a higher number of vibrations per secomd. This is what "frequency' means, how many vibrations are there per second, how FREQUENT are thee.

the higher the frequency the more energy because the wave is vibrating faster.

the equation that relates this is Energy = h times frequency, where h is

Planck's constant = 6.262 x 10^-27 ERG-SEC

the frequency of vibration and therefor the energy of visible electromagnetic radiation (light) increase as we go across

ROY G BIV

Answer:

9 grams of nitrogen gas

Explanation:

Answer:

And we have to calculate the number of moles of sucrose present in a lb mass of sucrose: Moles of sucrose=454⋅g342.30⋅g⋅mol−1=1.33⋅mol .

Explanation:

Brainliest Answer Pls

The number of moles of sucrose that the packet contain is 0.0116. mol.

Sucrose is a simple carbohydrate that is sweet in nature. It is present in fruits and plants. Its simple formula is C ₁₂H ₂₂O ₁₁. It is the simple sugar that is eaten.

Glucose and fructose are two examples of simple sugars that make up sucrose. Fructose, glucose, and sucrose are all naturally occurring sugars that are also added to processed meals.

The moles can be calculated by dividing the molar mass by the mass of the compound.

The mass of the sucrose is 4.0g

The molar mass of the sucrose is 342.3 g/mol

To calculate the moles of sugar, we                                                                                                              

Moles of sucrose = 4.0g / 342.3 = 0.0116

Thus, the moles of sucrose is 0.0116 mol.

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Explanation:

When dilute HCl is added to a small amount of copper oxide in a beaker, a greenish-yellow gas is released and a bluish-green solution is formed. Since the metal oxides such as a Copper oxide (CuO) are basic in nature, it reacts with acids such as HCl to form the corresponding salt and water.

Answer:

No. 1, No. 2, No. 6

First of all there's water on the moon, only half of the earth is also exposed to the sun, i don't think the distance from Earth does anything.

Photosynthesis is impossible on the surface of the moon because the moons atmosphere lacks oxygen, their is not enough carbon dioxide in the moons atmosphere and the soil on the moon cannot support plants life. Thus option 1, 2 and 6 is correct.

Photosynthesis is defined as the process used by the plants, algae and some bacteria to turn sunlight, carbon dioxide and water into food, sugar and oxygen.

It occurs solely in the plants that have green pigment chlorophyll which is used to prepare food for itself.

Thus, photosynthesis is impossible on the surface of the moon because the moons atmosphere lacks oxygen, their is not enough carbon dioxide in the moons atmosphere and the soil on the moon cannot support plants life. Thus option 1, 2 and 6 is correct.

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Answer:

Volume x Density = Mass of a substance

1300 x 0.67 = 871

The mass is 871 (unit)

Answer:

see explanation

Explanation:

How is the relatively high melting point of sodium chloride related to its structure at the atomic scale? Observe sodium chloride crystals with a hand lens. Use your observations and the model of sodium chloride to support your claim.

Unlike the raltively low melting point of water (100 °C), NaCl has a much higher melting point (801 °C),.

Theater molecules in ice are held together by hydrogen bonds, which are relatively weak.

The ions in NaCl are held together by  ionic bonds, whose electrostatic ,force is much greater.

The crystal structure makes the force even greater.

imagine a chloride ionin a NaCl crystal.

It has Na ions in front, behind, to the left, to the right, above and below.

Likewise the Na ion has Cl ions in front, behind, to the left, to the right, above and below.

It takes a lot of energy to berak these bonds and temprature is a measure of energy.

if you try the experiment make certain you are undr a fune hood and wear protective loves and apron.   801 °C can seriously burn skin and clothing

The temperature at which the liquid and the solid of refined compounds and elements can occur stable and in equilibrium is called the melting point.

Therefore, the melting point is related to the structural organization of the atoms.

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Answer:

Elements within the same group have the same number of electrons in their valence (outermost) shells, and they have similar electron configurations. They exhibit similar chemical properties.

Answer: Activation energy is defined as the minimum amount of extra energy required by a reacting molecule to get converted into product. It can also be described as the minimum amount of energy needed to activate or energize molecules or atoms so that they can undergo a chemical reaction or transformation.

Explanation:

Answer:

Highway 22 ,GA 31820

Explanation:

Answer:

the 3rd answer

Explanation:

the earth is composed of key element like carbon Oxygen nitrogen phosphorus hydrogen and sulphur CHNOPS but they are other element on earth too even though they are not as essential