a polygon with four equal sides ands angle​

Answers

Answer 1
rhombus


A rhombus is a parallelogram with all four sides congruent to each other. diamond-like shape. A square is a parallelogram with four congruent sides and four right angles. In other words, a square is a rectangle and a rhombus.

Related Questions

dentify whether each element is a halogen, a noble gas, or nonmetal only.

Astatine (At):

Nitrogen (N):

Krypton (Kr):

Chlorine (Cl):

Sulfur (S):

Answers

Astatine : Halogen

Nitrogen : Nonmetal

Krypton : Noble gas

Chlorine : Halogen

Sulfur : Nonmetal

i just needed the points sorryyy

What is the percent yield of LiCl if I produced 30.85g LiCl and my theoretical yield was calculated to be 35.40g LiCl?

Answers

Answer:

87.15%

Explanation:

To find percent yield, we can use this simple equation

[tex]\frac{Actual}{Theoretical} *100[/tex]

Where "Actual" is the amount in grams actually collected from the reaction, and "Theoretical" is, well, the theoretical amount that should have been produced.

They give us these values, so to find the percent yield, just plug the numbers in.

[tex]\frac{30.85}{35.40} *100\\\\ =87.15[/tex]

So, the percent yield is 87.15%

An easy trick to remember how to do this is just to divide the smaller number by the bigger number and move the decimal back two places. If you have a percent yield greater than 100%, something is wrong in the reaction.

In hydrogen, in order for an electron to emit visible light, it must fall from
some energy state and stop where?
A. 1st energy level
B. 2nd energy level
C. 3rd energy level
D. 4th energy level

Answers

Answer:

B

Explanation:

B. 2nd energy level

When you take off a wool hat, some of the electrons from your hair transfer to
the hat. When this happens, your hair can stand up on end. Why doesn't
gravity hold your hair down?
A. The distance to the center of Earth is vastly larger than between
the hat and your hair,
B. The electrical field caused by the charged hair disrupts the
gravitational field near your hair
C. The electrostatic force is stronger than the gravitational force
between Earth and your hair,
D. The gravitational force between the hat and your hair opposes
Earth's gravitational force,

Answers

Answer:

C. The electrostatic force is stronger than the gravitational force

between Earth and your hair

Explanation:

Electrostatic forces are extremely strong. When your hair becomes charged from the electrons, it causes the strands of your hair to repel (push away) from each other because they have like (the same) charges.

16. What is the typical diameter of an atom?
A. | 10-14 m
B. I x 10-12 m
C. | 10-10 m
D. | x 10-8 m

HELPP PLSS

Answers

The answer should be ‘ C’

what part of the food chain is a lemming
a:producer
b:secondary consumer
c:primary consumer
d: predator​

Answers

hmm...for your answer I think it would be D

Answer:

primary consumer

Explanation:

Lemmings are primary consumers.

help me please i beg u

Answers

C because that’s renewable

Answer:

none of the above

Explanation:

2. How many grams are in 2.05 x 1030 atoms of Lithium (Li)?

Answers

atoms = 3.9 x 10. 24 atoms. 1 mole. 2. How many moles of argon are in a sample ... 6.02 x 10. 23 atoms. 3. How many moles are in 2.5g of lithium? 2.5 grams Li .

Describe the motion of molecules in these two
substances when the ice cube is placed on the
radiator.

Answers

Answer:

When in direct contact, the fast-moving molecules in the radiator collide with the slow-moving molecules in the ice cube. Kinetic energy is transferred from the molecules in the radiator to the molecules in the ice cube, causing a slowdown of the radiator molecules and an acceleration of the ice molecules.

Explanation:

Answer

when in direct contact, the fast-moving molecules in the radiator collide with the slow-moving molecules in the ice cube. Kinetic energy is transferred from the molecules in the radiator to the molecules in the ice cube, causing a slowdown of the radiator molecules and an acceleration of the ice molecules.

Explanation:

an unknown sample with a mass of 50.0 grams changes from an initial temperature of 22.5°C to a final temperature of 32.4°C. It is known that the sample absorbed 444 J and f heat l. Bases on this information, what substance in the table is most likely the identity of this sample?​

Answers

Answer:

Aluminum

Explanation:

5 points! Please don’t guess if u don’t know!


Salts usually have a low melting point.
A. true
B. false

Answers

This is true. that's why we use it for snow

Answer:

false

Explanation:

ya thats why we use it for boiling water

What are the chemical symbols for the elements calcium, carbon, and chlorine respectively? es
A) CL, C, and Ce
B) C, Ca, and Co
C) Ca. C, and CL
D) Ca, Co, and CL​

Answers

the answer is letter c

Answer:

C

Explanation:

Match each object to its definition.
A. meteorite
B. meteoroid
C. meteor
->
1. The remains of a rock from space that strikes Earth’s surface

2. A rock that burns up in Earth’s atmosphere

3. A small piece of rock in space

Answers

Answer:

definition 1. goes with B. meteoroid

definition 2. goes with C. meteor

definition 3. goes with A. meteorite

Answer: meteoroid - a small piece of rock in space, meteor - a rock that burns up in Earths atmosphere, meteorite - The remains of a rock from space that strike Earth's surface.

Explanation:

Convert 678.92 cm into meters​

Answers

Answer:6.7892 meters

Explanation:

Please help!!! I will mark you brainiest!!!

Answers

Answer:

Some positive effects of using synthetic plastic is that scientist can make it softer and biodegradable so that nature can break it down and destroy it so it won't affect the environment. And scientist can also make stronger and tougher in products so they can last longer.

Explanation:

How many mL of 0.25 M NaOH would have 0.18 moles of NaOH

Answers

Answer:

[tex]720\ \text{mL}[/tex]

Explanation:

M = Molarity of NaOH = 0.25 M = 0.25 mol/L

n = Number of moles of NaOH = 0.18 moles

Volume of solution is given by

[tex]V=\dfrac{n}{M}[/tex]

[tex]\Rightarrow V=\dfrac{0.18}{0.25}[/tex]

[tex]\Rightarrow V=0.72\ \text{L}\times 10^3=720\ \text{mL}[/tex]

The volume of NaOH in the solution is [tex]720\ \text{mL}[/tex].

Which is the correct formula for finding the frequency of an electromagnetic wave? f = c – lambda f = StartFraction lambda over c EndFraction. f = lambda + c f = StartFraction c over lambda EndFraction.

Answers

Answer: It's D

Explanation:

Answer:

the answers d if you give brainliest give it to the other person im not worthy of it

Explanation:

help me with this question

Answers

In physical and chemical changes, the number of atoms and weight of the object always stays the same.

In a chemical change, the substance changes into a different substance.

I'm pretty sure this next one is can or can not be seperated, depending on what has been mixed. Not positive tho.

How many grams of NaOH (MW = 40.0) are there in 500.0 mL
of a 0.175 M NaOH solution?
A) 3.50
B) 114
C) 14.0
D) 2.19x10

Answers

Answer:

3.5

Explanation:

500*0.175= 8.75 *40/1000=3500/1000=3.5

Answer:

3.50 grams

Explanation:

Mastering chem

PLEASE HELP WILL GIVG BRAINLEST ​

Answers

Answer:

It is option #1.

Explanation:

Biotechnology is defined as, "The exploitation of biological processes for industrial and other purposes, especially the genetic manipulation of microorganisms for the production of antibiotics, hormones, etc."

Therefore, option #1 is your answer!

Which one of the following is an example of a balanced chemical reaction?
A
C3H60 + 30 2 + 3C0 2 + 3H 20
B 2C 3H 60 + 90 2+ 6CO2 + 6H 20
© C3H60 +90 2 +300 2 +3H 20
D) 2C 3H 60 + 90 2+ 6CO2 + 3H 20
C3H 60 + 40 2 + 3CO 2 + 3H 20

Answers

i think the answer would be D

An example of a balanced chemical reaction (equation) is: D. [tex]C_3H_60 + 40_2[/tex] ----> [tex]3CO_2 + 3H_20[/tex]

In Chemistry, a chemical equation is typically used to denote or represent the chemical reaction between two or more chemical elements.

A balanced chemical equation can be defined as a chemical equation wherein the number of atoms on the reactant (left) side is equal to the number of atoms on the product (right) side.

This ultimately implies that, both the charge on each atom and sum of the masses of the chemical compounds or elements in a chemical equation are properly balanced.

Ideally, the first step in balancing a chemical equation is to count the number of atoms in the reactant and product side.

                                    [tex]C_3H_60 + 40_2[/tex] ----> [tex]3CO_2 + 3H_20[/tex]

For reactants:

Carbon = 3 atoms.Hydrogen = 6 atoms.Oxygen = 1 + 8 = 9 atoms.

For products:

Carbon = 3 atoms.Hydrogen = 6 atoms.Oxygen = 6 + 3 = 9 atoms.

Since, the number of atoms on the reactant (left) side is equal to the number of atoms on the product (right) side, this is an example of a balanced chemical reaction (equation).

Read more: https://brainly.com/question/13750908

how does a spectral signature help scientists determine the composition of planets and other stars???

Answers

Answer:

How do scientists determine the chemical compositions of the planets and stars? Each element absorbs light at specific wavelengths unique to that atom. When astronomers look at an object's spectrum, they can determine its composition based on these wavelengths. ... That fingerprint often appears as the absorption of light.

Explanation:

We can conduct different spectroscopic techniques for the sample collected from stars and planets to determine their composition. Using these techniques, scientists can identify the compounds and elements present in them.

What are spectroscopic techniques ?

There are various spectroscopic techniques such as IR spectroscopy, UV- visible spectroscopy, mass spectroscopy etc. to determine the composition of both inorganic and organic compounds.

The IR spectroscopy uses the vibrational transitions of molecules by the absorption of IR radiation. The stretching or bending frequency of each functional groups are characteristic to them. Hence, we can determine the functional groups present in the molecules.

Similarly mass spectrum, atomic emission spectrum etc. provide valuable information about the sample under study including their mass and elemental compositions. Hence, spectral signature definitely helpful to determine the composition in stars and planets.

Find more on spectroscopy:

https://brainly.com/question/30256292

#SPJ6

A word which describes a solution which is more dilute than cytoplasm and would cause a cell to swell with water

Answers

Answer:

A hypertonic solution has increased solute, and a net movement of water outside causing the cell to shrink. A hypotonic solution has decreased solute concentration, and a net movement of water inside the cell, causing swelling or breakage.

Explanation: hope this helps :) sorry if it's wrong :(

Please help on question 7 and 8, i really need help and this is for marks! I only have 9 min left i will mark brainliest to whoever gives the best answer!

Answers

Conduction because conduction is the traveling of heat energy

Answer:

I'm going to go with conduction

Explanation:

At first I thought it was combustion but I read the problem incorrectly. It seems like the liquid boils after you put them on the hot plate.

It's most likely conduction because heat and energy is being transferred into the liquid from the hot plate

A student pours 800.0 mL of a 3.000 molar solution of sodium hydroxide into a 2.00 liter volumetric flask and fills the flask up with water. What is the new molarity of the solution?
A) 12.00 M
B) 1.20 M
C) 14.00 M
D) 0.0750 M

Answers

C) 14.00

(Sorry if it’s wrong)

Concentration is ? 

Answers

64 no repeats or hesitation i’ll go first sconce ur the worst category is anything

Whats molecular formula of 26,4% carbon , 3,3 % Hydrogen and 70,3% oxygen?

Answers

Explanation:  Therefore the molecular formula is twice the empirical formula: C2H6O2. The compound dioxane contains only carbon, hydrogen, and oxygen. When 0.956 g dioxane is burned, 1.91 g carbon dioxide and 0.782 g water are formed. In another experiment, it was determined that 6.04x10-3 mol dioxane weighs 0.532 g.

for every 100g : 26.4g of C , 3.3g of H, 70.3 O
find the number of moles: 26.4/12 3.3/1 70.3/16
divide by smallest number: 2.2/2.2 3.3/2.2 4.39375/2.2
the answers are 1 1.5 2
multiply by 2: 2 3 4
so C2H3O4

what part of the food chain is a mink
a: secondary consumer
b: primary consumer
c:prouducer
d:herbivore​

Answers

Secondary consumer

Hope this helps!:)

Answer: A secondary consumers

Explanation:

They are carnivores, feeding on primary consumers. The Bobcat, Raccoon, Mink, and Bass are all secondary consumers.

How does burning affect an object's property? Burning can cause an object to increase in volume. Burning changes the chemical make up of an object. Burning can create the item to increase in mass. Burning keeps the chemical make up of an object the same.​

Answers

Answer: Burning changes the chemical make up of an object.

Explanation:

A chemical change can be defined as a change in the substance when it combines with other kind of substance to form a new substance. A chemical change can also occur when a substance is broken down into two or more products. These changes cannot be reversed. These changes affect the physical make up of an object. For example, burning as when an object is burned it cannot be transformed into its original form. A wood if burned can be converted into ash, water and carbon dioxide cannot regain its original form after burning so burning brings about chemical change in an object.

Predict the shape of the molecule....

Answers

Answer: trigonal bipyramidal

Explanation:

Number of electron pairs = [tex]\frac{1}{2}[V+N-C+A][/tex]

V = number of valence electrons present in central atom

N = number of monovalent atoms bonded to central atom

C = charge of cation

A = charge of anion

[tex]SbCl_5[/tex] :

In the given molecule, antimony is the central atom and there are five chlorine as monovalent atoms.

The number of electron pairs are 5 that means the hybridization will be [tex]sp^3d[/tex] and geometry of the molecule will be trigonal bipyramidal.

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