SF2 and CH4 have similar, but not identical bond angles. Explain this observation and explain why they are slightly different.

Answer: 36

Explanation:

Answer:

stem cells

Explanation:

hope it helps

Explanation:

The solids can be classified on the basis of bond they are joined with. There are four types of solids on the basis of bond. There are four type of  crystalline solids: namely,  molecular solids, network solids, ionic solids, and metallic solids. The molecular and the structure of the solid determines its properties likes conductivity, solibility, heat conductivity, and density. Solids are incompressible and rigid as there molecules are fixed in place.

Answer:

Atoms, Molecules, Extended Structures, and Substances

Explanation:

High arky of solids

Answer:

1. Foods that have changes that are chemically introduced.

2. corn soybeans apples etc

3. sot they last longer or look better

4. new dna is placed in them and their seeds

5. they are not as good for humans

Explanation:

Answer:

Al2(SO4)3 + 3Mg(OH)2 → 2Al(OH)3 + 3MgSO4

Explanation:

The charge of phosphate : 3-

Oxidation is an increase in oxidation number, while reduction is a reduction in oxidation number.

The formula for determining Oxidation Numbers in general:

1. Single element atomic oxidation number = 0.

Group IA (Li, Na, K, Rb, Cs, and Fr): +1

Group IIA (Be, Mg, Ca, Sr and Ba): +2

Group IIIA(Al, B) : +3

H in compound = +1, except metal hydride compounds (Hydrogen which binds to groups IA or IIA) oxidation number H = -1, for example, LiH, MgH₂, etc.

2. Oxidation number O in compound = -2, except OF2 = + 2 and in peroxide (Na₂O₂, BaO₂) = -1 and superoxide, for example KO₂ = -1/2.

3 The oxidation number in an uncharged compound = 0,

Total oxidation number in ion = ion charge, Example NO₃⁻ = -1

Compound AlPO₄ :

The oxidation number in an uncharged compound = 0

Since the charge of Al as group 3A (or group 13) is +3, while the AlPO₄ compound is a polyatomic compound (consisting of polyatomic ions PO₄ and Al), the PO₄ charge:

charge Al + charge PO₄ = 0

+ 3 + charge PO₄ = 0

charge PO₄ = -3

Answer:up

Explanation:

Answer: its D

Explanation: i just got the question right

In scientific notation, often known as power-of-10 notation, extremely big and small numbers are written. Scientists write very large numbers by express the numbers using scientific notation.

Numbers that are either too large or too little to be readily stated in decimal form can be expressed using scientific notation. It is also known as standard form in the UK and scientific form, standard index form, and standard form.

The main goal of scientific notation is to simplify computations using numbers that are abnormally big or tiny. The following examples demonstrate how all the digits in a number in scientific notation are relevant, since zeros are no longer utilized to set the decimal point.

When working with very big or very small numbers, scientists, mathematicians, and engineers employ scientific notation. Large and tiny numbers can be represented in a form that is simpler to read using exponential notation.

Thus, option D is correct.

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Answer:

2 second

Explanation:

yes

Answer:

She okeyy

Explanation:

Example 740 are the think free ofıce pH of the blood 740 blood sample iş takipte kal ❣️

Answer:

13.8 mol CO₂

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

8.32 × 10²⁴ molecules CO₂

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

[tex]8.32 \cdot 10^{24} \ molecules \ CO_2(\frac{1 \ mol \ CO_2}{6.022 \cdot 10^{23} \ molecules \ CO_2} )[/tex] = 13.816 mol CO₂

Step 4: Check

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

13.816 mol CO₂ ≈ 13.8 mol CO₂

1. 92 g

2. 5.4 g

3. 0.217 moles

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass

[tex]\tt n=\dfrac{m}{MW}[/tex]

1. the mass of 4 moles of Na(MW= 23 g/mol)

[tex]\tt mass=mol\times MW\\\\mass=4\times 23\\\\mass=92~g[/tex]

2.  the mass of 0.3 moles of water(MW=18 g/mol)

[tex]\tt mass=mol\times MW\\\\mass=0.3\times 18\\\\mass=5.4~g[/tex]

3. the number of moles found in 10g of ethanol C2H5OH(MW=46 g/mol) :

[tex]\tt mol=\dfrac{10}{46}\\\\mol=0.217[/tex]

Answer: l

2

+

2

K

B

r

→

2

K

C

l

+

B

r

2

Given:

300

g

of

C

l

2

300

g

of

K

B

r

(a) Mass of

C

l

2

= 300g

Molecular mass of

C

l

2

= 2(35.45) = 70.906 g

/

m

o

l

No.of moles of

C

l

2

=

m

a

s

s

/

m

o

l

a

r

m

a

s

s

=

300

/

70.906

=

4.23

moles

Mass of

K

B

r

=

300

g

Molar mass of

K

B

r

=

39

+

79.9

=

118.9

g

/

m

o

l

No.of moles of

K

B

r

=

300

/

118.9

=

2.52

moles

Now,

Consider the equation:

C

l

2

+

2

K

B

r

→

2

K

C

l

+

B

r

2

1

mole of

C

l

2

= 2 moles of

K

C

l

4.23

moles of

C

l

2

= 2x4.23=

8.46

moles

2

moles of

K

B

r

= 2 moles of

K

C

l

2.52

moles of

K

B

r

=

2.52

moles

Now convert moles to mass,

Mass of

K

C

l

produced by

C

l

2

=

8.46

×

70.906

=

599.8

g

Mass of

K

C

l

produced by potassium bromide =

2.52

×

74.5

=

187.74

g

As

K

B

r

is producing lesser moles of product so,

K

B

r

is limiting reactant and produced potassium chloride=

187

Explanation:

Taking into account the reaction stoichiometry, 1 mol of KCl is formed from 119 grams of KBr.

In first place, the balanced reaction is:

Cl₂ + 2 KBr → 2 KCI + Br₂

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

The molar mass of the compounds is:

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

The following rule of three can be applied: if by reaction stoichiometry 238 grams of KBr form 2 moles of KCl, 119 grams of KBr form how many moles of KCl?

[tex]moles of KCl=\frac{119 grams of KBrx2 moles of KCl}{238 grams of KBr}[/tex]

moles of KCl= 1 mole

Then, 1 mol of KCl is formed from 119 grams of KBr.

Learn more about the reaction stoichiometry:

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Answer:

c

Explanation:

Answer:

Ephemerals

Explanation:

The first plants to move into the new bare ground after a wildfire are wildflowers or “weeds.” These fast-germinating, leafy herbaceous plants are also known as “forbs” or “ephemerals.” They quickly germinate, grow and produce a new crop of seeds.

Answer:

ephemeral

Explanation:

Explanation:

I'm not sure what it is

Answer:

ppsuck

Explanation:

f;lhfadlkahglkaga

Answer:

C

Explanation:

The answer is in the image.

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Walk in faith and trust in God!

Answer:

1.7M

Explanation:

Given parameters:

Volume of solution = 0.3L

Number of moles  = 0.5moles

Unknown:

Molarity  = ?

Solution:

The molarity of a substance is the number of moles of solute that can be found in the volume of a solution.

  Molarity  = [tex]\frac{number of moles }{volume}[/tex]  

      Insert the parameters and solve;

 Molarity  = [tex]\frac{0.5}{0.3}[/tex]  = 1.7M

Answer:

1.5 × 10²⁴ atoms Mn

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

2.5 mol Mn

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

[tex]2.5 \ mol \ Mn(\frac{6.022 \cdot 10^{23} \ atoms \ Mn}{1 \ mol \ Mn} )[/tex] = 1.5055 × 10²⁴ atoms Mn

Step 4: Check

We are given 2 sig figs. Follow sig fig rules and round.

1.5055 × 10²⁴ atoms Mn ≈ 1.5 × 10²⁴ atoms Mn

Answer:

the wave is reflected. it starts heading towards the other direction

Explanation:

Answer:

First one: Yes, It can be negative.

Explanation:

First one: The reason you can have negative acceleration is that acceleration can slow down, or decelerate, causing the negative acceleration.

Answer: During a chemical reaction, matter cannot be created nor destroyed, matter can change form through physical and chemical changes, but through any of these changes, matter is conserved; even though the matter may change from one form to another, the same number of atoms exists before and after the change takes place.

Explanation: <3

Answer:

short answers:

A learned behavior is a behavior that develops during an animal’s lifetime.

Examples of learned behaviors include tying one’s shoes or solving a math problem.

An inherited behavior is a behavior that an animal is born with.

An example of an inherited behavior is a bird building a nest.

Explanation:

Learned behaviors are those which are gradually developing in us through learning at different ages and it takes time. Inherited behaviour is innate to us which are incorporated with us by birth.

An organism develops a learned behavior as a result of experience. In contrast to learned actions, inherent behaviors are genetically preprogrammed and can be carried out without any prior knowledge or instruction.  

Certain behaviors have features that are both acquired and innate. Zebra finches, for instance, have a genetic predisposition to learn a song, but the song they sing is influenced by what they hear from their dads.

Inherited behaviors are inherited from parents to their offsprings. Such as  similar nature in sound, angriness, some diseases etc. They are not gathered from any experience and are accompanied by birth.

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Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{3.55 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.05897...[/tex]

We have the final answer as

Hope this helps you

Answer its a

Explanation:

Answer:

synthesis reactions

Explanation:

Just as synthesis reactions can only form one product, decomposition reactions can only start with one reactant