Anybody wanna help me with number 22? (Chemistry)

Answer:

the answer is potassium bromide

Answer:

POTASSIUM BROMIDE

Explanation:

At room temperature, potassium reacts with bromine, and by synthesis, this compound is formed. The chemical equation of this reaction is 2 K + Br2 = 2KBr. Potassium bromide has an immense contribution to medical science.

Answer:

5m

Explanation:

Given parameters:

Speed of wave  = 3 x 10⁸m/s

Frequency  = 60mhz  = 60 x 10⁶Hz

Unknown:

wavelength = ?

Solution:

To solve this problem;

 we use the expression:

                      V = F ∧  

V is the velocity

F is the frequency

∧ is the wavelength

  Now insert the parameters and solve;

              3 x 10⁸   = 60 x 10⁶ x ∧  

 So;

        ∧   = 5m

Answer:

6.02x10^23 atoms  i think

Explanation:

Answer:

two different ways are 1st by using water and 2nd by using wind these also not harm our environment

Explanation:

m=30

v=10

K.E=1/2mv^2

=1/2×30×10^2

=1/2×30×100

=1500 joule

Answer:

its hto-567-st-3=56+78=103

Explanation:

so103 is yo answer

Answer:

The mass of 21.05 moles of iron(III) sulfide is 4,372.085 grams.

Explanation:

Iron (III) sulfide is a chemical compound with the formula Fe₂S₃.

Being the molar mass of the elements:

then the molar mass of iron sulfide (III) is:

Fe₂S₃= 2* 55.85 g/mole + 3* 32 g/mole=  207.7 g/mole

Molar mass is the amount of mass that a substance contains in one mole. Then the rule of three can be applied: if in 1 mole of iron (III) sulfide there are 207.7 grams, in 21.05 moles how much mass is there?

[tex]mass=\frac{21.05 moles*207.7 grams}{1 mole}[/tex]

mass= 4,372.085 grams

The mass of 21.05 moles of iron(III) sulfide is 4,372.085 grams.

Answer:

C would be the answer this question

Answer:

Hello!

Gold is a chemical element with symbol Au (from Latin: aurum) and atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal and a group 11 element.

So in short, the Correct Answer will be (D) an Element.

Hope that Helps! Have A Wonderful Day! ☺

Explanation:

Gold is an example of chemical element with symbol Au aurum and atomic number 79, lightly reddish yellow, dense, soft, malleable, and ductile metal.

Atomic number of an element  is defined as total number of protons present in the nucleus,  neutrons carry no net electrical charge, so it is the charge number of the nucleus.

atomic mass of an element can be defined as the atomic weight is measured total mass of an element’s atom, the total number of neutrons and protons in the nucleus of an atom.

Both Atomic mass and an atomic number of elements are closely related if  atomic number is high, then the atomic mass is also said to be high.

For more details regarding fire atomic number , visit

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Answer:

your question is totally wrong. there is no cl2 in reactants.

Answer:

Yes

Explanation: Had a question like this and I said yes and got it right

Hey there!

We need to start this by finding the molar mass of (C₃H₅)₂S.

This molecule consists of 6 carbon atoms, 10 hydrogen atoms, and one sulfur atom. We need to add the molar masses of each atom up.

C: 6 x 12.01 = 72.06

H: 10 x 1.008 = 10.08

S: 1 x 32.07 = 32.07

-------------------------------

                    114.21 g/mol

Ok, now that we have established that the molar mass of (C₃H₅)₂S is 114.21 g/mol, we have 2.50 mol of (C₃H₅)₂S. If 1 mol has a mass of 114.21 g, then 2.50 mol will have a mass of 2.50 time 114.21.

2.50 x 114.21 = 285.525 grams

This should go to just three significant figures, so:

The mass of 2.50 mol of (C₃H₅)₂S is 286 grams.

Hope this helps!

Answer:

whole milk ,table salt , maple syrup

Answer:

d

Explanation:

Answer:

9

Explanation:

mass number = protons + neutrons

= 4 + 5 = 9

Answer:

Average atomic mass  = 10.8  amu

Explanation:

Given data:

Average atomic mass = ?

Percentage of boron having mass 10.0129371 amu = 19.9%

Percentage of boron having mass 11.0093055 amu = 80.1%

Solution:

Average atomic mass  = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass  = (19.9×10.0129371 )+(80.1×11.0093055) /100

Average atomic mass =  199.3 + 881.8 / 100

Average atomic mass = 1081.1  / 100

Average atomic mass  = 10.8  amu.

Explanation:

A sulfide ion S²⁻ is formed from sulfur atom.

An ion is an atom that has lost or gained electron.

Sulfur atom is made up of 16 electrons according to its position on the periodic table.

In essence, there are 16 negatively charged particles in an atom of sulfur.

Also, in the neutral or uncharged state, the number of electrons equals to the number of protons.

So, there are 16 electrons and protons in an atom of sulfur.

 Charge  = Number of protons  - Number of electrons

 Charge  = 16  - 18  = -2

Answer:

Sinkholes this is the answer

Answer:

B. Mining

Explanation:

trust

Explanation:

the balanced equation is: .........

Answer:

i agree with her/him^^^^^^^^^^^^^^^^^^^^^^

Explanation:

Answer:

Electrons

Explanation:

Answer:

electrons

Explanation:

Answer:

true

hope this helps! have an amazing day!

Answer:

600 grams

Explanation:

The value of the mole is equal to the number of atoms in exactly 12 grams

12x50=600

Answer:

natural

Explanation:

Answer:

False

Explanation:

In a neutral atom, the number of protons is not necessarily equal to the number of neutrons.

In such atom, the number of protons is equal to the number of electrons.

When the number of protons and electrons are the same, a neutral atom is formed.

Answer:

i think its C

Explanation:

Wax's tendency to melt can describe a chemical property of a substance. Therefore, option (D) is correct.

A chemical property can be described as any of a material's properties that becomes evident during a chemical reaction. Any quality can be established only by changing the chemical identity of the substance. Chemical properties cannot be evaluated by viewing or touching the substance.

The internal structure of the substance must be affected greatly for its chemical properties to be investigated. When a substance undergoes a chemical reaction, its properties will change drastically, resulting in a chemical change.

Chemical properties are contrasted with physical properties and can be used for building chemical classifications. They are also useful to identify an unknown substance.

As the wax melt, it also burns and hives the carbon dioxide, water, heat, and light. Therefore, the wax's tendency to melt and burn is a chemical property.

Learn more about chemical property, here:

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Answer:

dfmpfndtngognjf

Explanation:

When a molecule loses or gains an electron it becomes an ion.

"If it gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion."

Answer:

the molecule become an iron

Explanation:

have a great day