What are some identifying factors of Sodium (Na)

Answers

Answer 1

Explanation:

what causes Spanish-American War


Related Questions

Which percentage is in the appropriate range for a snack to be considered a “good source” of nutrients?


15 percent


35 percent


40 percent


50 percent

Answers

I think 35 percent. Hope this helps!

Answer:

15

Explanation:

A Solution is a mixture of two or more substances_____
O a in water
O b. seperate from one another
O c in the same phase
Od come to room temperature

Answers

Answer:

In the same phase

Explanation:

Because when you make a solution you have to keep them in the same phase or you will oof.

What did electrons from the ionized air do to the oil drops?

Answers

Answer:

The famous oil drop experiment exploits that fact that an oil drop in an electronic field will get negative charge accumulation which can be balanced and observed in order to determine the charge of an electron.

Nuclear chemistry findings contradict __________________ theory of indivisible atoms.

Answers

Answer:

atomic theory

Explanation:

which can occur in a physical changen?

Answers

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.

help me please i have it due soon

Answers

Answer:

B

Explanation:

I think it is B. That is because when you are falling, your just going to fall faster and faster.

I hope this helps!

Answer:

B

Explanation:

The third force the jumper experiences is a spring force due to the bungee cord. The amount that the bungee cord pulls back on the jumper depends on how far the cord has been stretched, i.e. the farther the jumper has fallen, the more the cord pulls back on him or her.

When fat comes in contact with sodium hydroxide, it produces soap and glycerin. Determine whether this is a physical change or a chemical change. Explain your answer.

Answers

Explanation:

Answer. What comes in contact with Sodium Hydroxide to form soap and glycerine it is a chemical change because you cannot reverse this change and also the products formed are the results of a chemical reaction

Answer:

Its a chemical change because its property is changed.

Explanation:

During STATIC ELECTRICITY to what type of objects & direction do electrons ALWAYS move to?

Answers

metal objects, electric objects, water,

The mass spectrum of the element Sb is most likely represented by which of the following?

A. 122 Atomic Mass
B. 121 and 123 Atomic Mass
C. 120, 123 and 124 Atomic Mass
D. 120,121 and 124 Atomic Mass

Answers

I think that the answer would be B

The correct answer is B: 121 and 123 Atomic Mass.

Mass spectrometers only detect stable isotopes.

Almost all elements exhibit isotopy. Isotopy is a phenomenon whereby atoms of the same atomic number have different atomic masses. The relative atomic mass of each element is the weighted average of the masses of all its isotopes.

Owing to the phenomenon of isotopy, the relative atomic mass of elements are not whole numbers.

The isotopes recorded by a mass spectrometer are stable isotopes of an element. The two stable isotopes of antimony are  Sb-121 and Sb-123. These two appear in its mass spectrum.

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A compound is always made up of the same ____ in the same proportions.

Answers

Answer:

elements

Explanation:

A compound always consists of the same elements in the same ratio. If the same elements combine in different ratios, they form different compounds

What percent of the universe's age is the first 400,000 years?

Answers

Answer:

the globuler cluster

Explanation:

hope this helps maybe next time show anwsers

What group will elements in the 7th column bond to?

Answers

Deez Neutz..............Group 1

1. Which of the following substances are elements?
(a) bronze
(b) tin
(c) chromium
(d) solder
(e) propane
(1) arsenic
(g) nickel

Answers

B, C, G and F or 1 is what you put

Show all work: A metal bar has a length of 5.0 cm, a width of 3.0 cm, and a height of 1.0 cm. What volume of water, measured in deciliters, would this bar displace?

Answers

15 cm

and I have to explain but there's nothing to explain so yea

Find the element. Plz help!

Answers

Answer:

Hydrogen.

Explanation:

We see in the nucleus that we have 1 proton and 1 neutron.

The number of protons in the nucleus determines which element it is.

Element with 1 proton is the 1st element on the Periodic Table, Hydrogen.

Which of the following is not a compound? Sulfur, sodium chloride, ammonia, carbon dioxide

Answers

Answer:

Carbon monoxide is a colorless, odorless, and tasteless flammable gas that is slightly less dense than air.

what is the significant figures of 12.00

Answers

There are 4 significant figures

Why are journal articles important in the spread of scientific knowledge?


Help me pls guy’s

Answers

Answer:

When published, each article expands the library of scientific literature available to all scientists and contributes to the overall knowledge base of the discipline of science. They report new research for the first time.

why is the temperature different in different places around world

Answers

Answer:

it is because they are placed geographically different.

The half-life of Th-227 is 18.2 day. How many days are required for 0.70g of a given sample
to decay to 0.04375 g?

Answers

Answer:

73 days

Explanation:

From the question given above, the following data were obtained:

Half life (t½) = 18.2 day.

Original amount (N₀) = 0.70 g

Amount remaining (N) = 0.04375 g

Time (t) =.?

Next, we shall determine the rate of decay of the isotope. This can be obtained as follow:

Half life (t½) = 18.2 day.

Decay constant (K) =.?

K = 0.693 / t½

K = 0.693 / 18.2

K = 0.038 /day

Finally, we shall determine the time taken for the isotope to decay to 0.04375 g. This can be obtained as follow:

Original amount (N₀) = 0.70 g

Amount remaining (N) = 0.04375 g

Decay constant (K) = 0.038 /day

Time (t) =.?

Log(N₀/N) = kt /2.303

Log (0.70/0.04375) = (0.038 × t) /2.303

Log 16 = (0.038 × t) /2.303

1.2041 = (0.038 × t) /2.303

Cross multiply

1.2041 × 2.303 = 0.038 × t

Divide both side 0.038

t = (1.2041 × 2.303) / 0.038

t = 72.97 ≈ 73 days

Therefore, it will take approximately 73 days for the isotope to decay to 0.04375 g

Why do nonmetals have a higher electronegativity?

Answers

Answer:

Nonmetals have more valence electrons and increase their stability by gaining electrons to become anions.

Answer: Because they are on the father side of the periodic table

Explanation: Electronegativity increases as you move from left to right on the periodic table

Predict the charge on the monatomic ions formed from the following atoms in binary ionic compounds:
(a) I
(b) Sr
(c) K
(d) N
(e) S
(f) In

Answers

i think the answer to this would be f

What is the mass of a hydrogen atom?​

Answers

Answer:

1.00784 u

Explanation:

Answer:

1.00784 u

Explanation:

hydrogen atomm

Q5 4.70 g of methanoic acid reacts to form 3.60 g of methanoic
anhydride. The equation for this reaction is:
2HCOOH + (CHO),0 + H2O
Calculate the percentage yield of this reaction.

Answers

Answer:

The anwser is always Jesus.

Explanation:

Things can only go downhill from here

1 point
QUESTION 5: What happens if you reset and place the refrigerator instead
of the wooden box with an applied force fo 200 Newtons for about 3
seconds? *
O The speed of the skateboard increases compared to the wooden box
O The speed of the skateboard decreases compared to the wooden box

Answers

Answer: The speed of the skateboard decreases compared to the wooden box

Explanation: well, umm... if you placed a refrigerator on a skateboard... that will be difficult to move, if anything it will brake the board!

A wooden box is much lighter than a refrigerator

Write a complete, balanced chemical equation where tin metal reacts with aqueous hydrochloric acid to produce tin(II) chloride and hydrogen gas. Include states.

From the equation, which element is oxidized, and which element is reduced?

Answers

Answer:

Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g)

Explanation:

The net reaction is Z n ( s ) + 2 H + ( a q ) → Z n 2 + ( a q ) + H 2 ( g ) The C l − ions are spectators - they don't change.

Which element’s symbol could replace the question mark in the diagram?

boron (B)
neon (Ne)
rubidium (Rb)
arsenic (As)

Answers

Answer:

D- Arsenic (As)

don’t fail pls :) ✨

The Arsenic (As) element's symbol could replace the question mark in the diagram. Therefore, option D is correct.

What is an electron dot diagram?

An electron dot diagram is a diagram used to represent the valence electrons of an atom in a simple way. Valence electrons are the electrons in the outermost shell of an atom, which are involved in chemical bonding.

In an electron dot diagram, the symbol of the element is used to represent the nucleus and inner electrons of the atom, and dots are placed around the symbol to represent the valence electrons. Each dot represents one valence electron, and the dots are placed on each of the four sides of the symbol (top, bottom, left, and right) before doubling up.

Thus, the Arsenic (As) element's symbol could replace the question mark in the diagram. Therefore, option D is correct.

Learn more about electron dot diagrams, here:

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Your question is incomplete, most probably the full question is this:

Which element’s symbol could replace the question mark in the diagram?

boron (B)

neon (Ne)

rubidium (Rb)

arsenic (As)

Which substance can be decomposed by chemical means? a. calcium b. argon c. sodium chloride d. aluminum

Answers

Amonia? But I don’t see that being an answer choice. I found this. I hope it helps

Find the average atomic mass of smithium ?

Answers

Answer:

google friend tell me

Explanation:

You will have to look up the isotopic distribution of lithium nuclei. ALL lithium nuclei have 3 positively charged nuclear particles, protons, i.e. Z = 3 . These 3 particles give rise to the element's identity. If you take the weighted average of ALL lithium nuclei, we get an average mass of 6.941 g⋅mol−1

HELP PLEASE
Chemical name for As2S3

Answers

Answer:

Chemical name for As2S3 is Arsenic sulfide

Explanation:

Answer:

Arsenic Sulfide

Explanation:

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