HELP!!!! I NEED THE EQUATION FOR Neptunium-237 undergoes alpha, alpha, beta, gamma, alpha, beta, alpha, gamma, and alpha decay.
I WILL MARK BRAINLIEST!!!!!!!

Answer:

Mean rate of reaction produced = 0.533 g/sec (approx.)

Explanation:

Given:

Reaction produced = 1.6 gram

Time taken = 30 sec

Find:

Mean rate of reaction produced

Computation:

Mean rate of reaction produced = Reaction produced / Time taken

Mean rate of reaction produced = 1.6 / 30

Mean rate of reaction produced = 0.533 g/sec (approx.)

Answer:

Approximately [tex]4.5\; \text{hours}[/tex].

Explanation:

Calculate the ratio between the mass of this sample after [tex]22.5\; \text{hours}[/tex] and the initial mass:

[tex]\displaystyle \frac{5.70\; \rm g}{182.4\; \rm g} \approx 0.03125[/tex].

Let [tex]n[/tex] denote the number of half-lives in that [tex]22.5\; \text{hours}[/tex] (where [tex]n\![/tex] might not necessarily be an integer.) The mass of the sample is supposed to become [tex](1/2)[/tex] the previous quantity after each half-life. Therefore, if the initial mass of the sample is [tex]1\; \rm g[/tex] (for example,) the mass of the sample after [tex]\! n[/tex] half-lives would be [tex]{(1/2)}^{n}\; \rm g[/tex]. Regardless of the initial mass, the ratio between the mass of the sample after [tex]n\!\![/tex] half-lives and the initial mass should be [tex]{(1/2)}^{n}[/tex].

For this question:

[tex]{(1/2)}^{n}} = 0.03125[/tex].

Take the natural logarithm of both sides of this equation to solve for [tex]n[/tex]:

[tex]\ln \left[{(1/2)}^{n}}\right] = \ln (0.03125)[/tex].

[tex]n\, [\ln(1/2)] = \ln (0.03125)[/tex].

[tex]\displaystyle n = \frac{\ln(0.03125)}{\ln(1/2)} \approx 5[/tex].

In other words, there are [tex]5[/tex] half-lives of this sample in [tex]22.5\; \text{hours}[/tex]. If the length of each half-life is constant, that length should be [tex](1/5) \times 22.5\; \text{hours} = 4.5\; \text{hours}[/tex].

Answer:

carbon dioxide

it is made up of carbon and oxygen.

2100 g Fe₂(SO₄)₃

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Stoichiometry

Atomic Structure

Step 1: Define

5.26 mol Fe₂(SO₄)₃

Step 2: Identify Conversions

Molar Mass of Fe - 55.85 g/mol

Molar Mass of S - 32.07 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of Fe₂(SO₄)₃ - 2(55.85) + 3(32.07) + 12(16.00) = 399.91 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

2103.53 g Fe₂(SO₄)₃ ≈ 2100 g Fe₂(SO₄)₃

Hey there!

Elements and compounds are purely homogeneous substances and they have a constant composition throughout. Elements and compounds cannot be separated into their respective constituents by physical means. Compounds and mixtures are made up of different elements or different atoms.

Answer:

Oil

Explanation:

Answer: cc

Explanation:..

Answer:

b

Explanation:

Options:

It can be separated into carbon and oxygen using physical methods.

Carbon and oxygen retain their original identity in it.

Carbon and oxygen are chemically bonded in it.

Explanation:

Sorry the guy asking forgot to put in the options so comment below the correct answer and brainy STOP DISABLING COMMENTS YOUR CAUSING SO MANY INCORRECT THINGS

Answer: 90%  Polyacrylonitrile (PAN)

(C3H3N)n - n signifies the chain  

10% Rayon & Pitch Base

Explanation:

Just Because...

Answer:

1.20 10^17

Explanation:

convert to atoms using Avogadro's number

2.00 x 10^-7 moles * 6.022 X 10^23 atoms= 1.20 10^17

Answer:

False

Explanation:

The statement is false because the volume of an irregular object can either be measured by the use of a measuring cylinder or an overflowing jar. That's the standard method of measuring irregular objects volume.

Answer:

[tex]5.1 \div 5.63[/tex]

Answer:

There are 6 oxygen atoms.

Explanation:

Glucose has a chemical formula of: C6H12O6 That means glucose is made of 6 carbon atoms, 12 hydrogen atoms and 6 oxygen atoms.

hope this helps

The molecular formula of glucose is C₆H₁₂O₆, therefore one molecule of glucose has six oxygen atoms.

A chemical formula is a way of representing information about the chemical proportions of atoms of each element that are present in a molecule or chemical compound. The chemical formula can be written by using chemical symbols, numbers, and other symbols, such as commas, dashes, brackets, and plus (+) and minus (−) signs.

A chemical formula of a compound contains no words but can represent certain simple chemical structures. Chemical formulae are usually more limited in power than structural formulae and chemical names. There are two types of chemical formulas one empirical formula and another molecular formula.

In a molecular formula, more than one atom of the same element can be represented by subscripts. The given formula of glucose is C₆H₁₂O₆ and the total number of oxygen atoms in the formula is equal to six.

Learn more about chemical formula, here:

brainly.com/question/11140581

#SPJ2

Answer:

isostatic adjustment movement

Answer:

a) 1s22s22p63s1

b) 3s² 3p¹

c) 1s22s22p63s23p3

d) 3s² 3p⁵

e) 3s2

f) 1s22s22p63s23p2

g) 1s22s22p63s23p4

h) 3s² 3p⁶

Answer:

i think their is amswer key for that

Explanation:

Answer:

22.4/3.8=5.89

Explanation:

Answer:

They have mobile charged particles.

Explanation:

Plasma refers to very hot matter such that the electrons in matter are ripped away from the atoms leading to the formation of an ionized gas.

We know that the carriers of electricity are charged particles. Any state of matter that has an abundance of charge carriers will definitely be a good conductor of electricity.

Therefore, plasmas are good conductors of electricity because they have a lot of mobile charged particles.

Answer: nonflowering and flowering

Explanation: i just did the quiz

Seed plants are divided into two groups, are nonflowering and flowering plants. Therefore, option C is correct.

Flowering plants create blooms, which they then use as seeds to develop more of their kind or other plants. Nonflowering plants don't produce flowers; instead, they produce microscopic reproductive components called seeds or spores that can be used to create additional plants that look exactly like them.

Gymnosperms and angiosperms are frequently used as arbitrary divisions for the seed plants. The difference between the two is based on the fact that angiosperms produce blooms, whereas gymnosperms do not.

An ovary surrounds the angiosperm seed. A seed grows on the size of a cone in gymnosperms. Inside an ovary, only an angiosperm seed can grow.

Thus, option C is correct.

To learn more about flowering plant, follow the link;

https://brainly.com/question/19601929

#SPJ2

Answer: B

Explanation: All you have to do to find out if an equation is balanced is count the number of atoms on each side. To be balanced, they must be equal.

In case you didn’t know: The number in front of an element or compound means that you will multiply. For instance, 2AlBr3 would have 2 Al atoms and 6 Br atoms. The subscript number just means how many atoms there are in that compound.

Answer:

Rule 1: All nonzero digits in measurement are significant.

Rule 2: Zeros that appear between other nonzero digits (i.e., "middle zeros") are always significant.

Rule 3: Zeros that appear in front of all of the nonzero digits are called leading zeros. Leading zeros are never significant.

Rule 4: Zeros that appear after all nonzero digits are called trailing zeros. A number with trailing zeros that lacks a decimal point may or may not be significant.

Rule 5: Trailing zeros in a number with a decimal point are significant. This is true whether the zeros occur before or after the decimal point.

Answer:

Explanation:

If it interests you, you could check out Maxwell's demon. If he is not in operation (and he likely isn't), then the answer is D.

Heat always transfers from hot to cold -- at least at beginning levels of chemistry.

Answer:

  P₄  +  4NaOH  + 2H₂O  →  2PH₃  +  2Na₂HPO₃  

Explanation:

The given reaction expression is given as:

              P₄  +  NaOH  + H₂O  →  PH₃  +  Na₂HPO₃  

To solve this problem, now we put coefficients a, b, c, d and e and we use a mathematical approach to solve this problem;

              aP₄  +  bNaOH  + cH₂O  →  dPH₃  +  eNa₂HPO₃  

Conserving P: 4a  = d + e

                  Na: b  = 2e

                  O:  b + c  = 3e

                  H:   b + 2c  = 3d + e

let b  = 1, e  = [tex]\frac{1}{2}[/tex] , c  =  [tex]\frac{1}{2}[/tex], d =  [tex]\frac{1}{2}[/tex], a = [tex]\frac{1}{4}[/tex]

  Multiply through by 4;

b  = 4, e  = 2, c  = 2, d  = 2, a  = 1

        P₄  +  4NaOH  + 2H₂O  →  2PH₃  +  2Na₂HPO₃  

Answer:

The reactants are the substances that start the chemical reaction. The products are the substances that are produced in the chemical reaction.

Explanation:

What is the difference between reactants and products?

Mass of KCl= 1.08 g

Given

1 g of K₂CO₃

Required

Mass of KCl

Solution

Reaction

K₂CO₃ +2HCl ⇒ 2KCl +H₂O + CO₂

mol of K₂CO₃(MW=138 g/mol) :

= 1 g : 138 g/mol

= 0.00725

From the equation, mol ratio K₂CO₃ : KCl = 1 : 2, so mol KCl :

= 2/1 x mol K₂CO₃

= 2/1 x 0.00725

= 0.0145

Mass of KCl(MW=74.5 g/mol) :

= mol x MW

= 0.0145 x 74.5

= 1.08 g