Help for brainliest

Help For Brainliest

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Answer 1

Answer:

those things that looks like cristals


Related Questions

Una muestra de 0,830 g de MgCl2 se disuelve en 350 g de agua. Si la densidad de la disolución es 1,09 g/mL

Answers

Answer:

NMIKCORQW

J3WEFONCIONV WEJFQOMS;DX

En una botella hay 2x10 25 moléculas de vinagre puro ¿Cuántos mol y cuántos gramos de esta sustancia habrá en la botella?

Answers

Answer:

33.2 moles y 1994 gramos.

Explanation:

¡Hola!

En este caso, dado que es posible para nosotros relacionar moles con gramos por medio de la masa molar y moléculas con moles por medio del número de Avogadro, resulta factible para nosotros primero calcular las moles en las moléculas dadas y de esta manera luego calcular los gramos, teniendo en cuenta una masa molar de 60.05 g/mol ya que el vinagre se puede estudiar como ácido acético (CH3COOH):

[tex]2x10^{23}molec*\frac{1mol}{6.022x10^{23}molec}=33.2mol[/tex]

Seguidamente, calculamos los gramos:

[tex]33.2mol*\frac{60.05g}{1mol}=1994g[/tex]

¡Saludos!

Write the molecular formula of poly(glycine)

Answers

Answer:

C2H5NO2

Explanation:

Glycine | C2H5NO2 - PubChem.

weight of glycine= 75.07 g/mol

Add coefficients to balance the equation to make water.
H2(g) +O2 (g)H20 (1)

Answers

Answer:

2H2+2O2=2H2O

Explanation:

hope this helps

What can be different between the products and reactants in a balanced chemical equation?

Answers

Answer:Reactants are starting materials and are written on the left-hand side of the equation. Products are the end-result of the reaction and are written on the right-hand side of the equation.

Explanation:

The reactants in a balanced chemical reaction are the starting material which reacts together to give the products in by the regrouping of atoms in the reactants.

What is a balanced chemical equation?

The balanced chemical equation of a reaction represents the perfect stoichiometry of each reactants and products with their states of matter in brackets.

In a balanced reaction, the number of each element in the reactant side must be equal to their number in the product side. The number of each elements and groups in a reaction can be balanced by multiplying with suitable integers.

The atoms in the reactants are regrouping to form the products. Thus, the identity of  the new products is entirely different form that of reactants in the reaction.

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An atom has 23 protons and 24 neutrons. Write both its NAME and it's SYMBOL using isotope notation.

Answers

Answer:

Vanadium is the name and the symbol is V #23

Explanation:

How many units long is the circumference of a circle with diameter of 18 units?

Answers

Answer:

56.52 units

Explanation:

hope that helps :)

56.55 units
Does this help

Which two processes of the water cycle absorb energy from the Sun?

A evaporation and precipitation B sublimation and evaporation C condensation and transpiration D precipitation and condensation

Answers

Answer: of Earth's atmosphere occurs as energy, primarily from the sun, causes liquid water to transform to another phase. As this occurs, liquid water absorbs energy, causing it to evaporate and form water vapor. The process of evaporation absorbs tremendous amounts of incoming solar energy.

Explanation:

Which type of reaction does an element replace an ion in a compound, forming a new compound and new element?

a
Synthesis
b
Decomposition
c
Single Replacement
d
Double Replacement
e
Combustion

Answers

Answer:

The answer is c . Single Replacement

Explanation:

A single replacement reaction, sometimes called a single displacement reaction, is a reaction in which one element is substituted for another element in a compound.

why does solid silver, Ag, conducts electricity while solid silver chloride, AgCl, does not.

Answers

Answer: A solid silver, Ag, conducts electricity because it contains ions or electrons while solid silver chloride, AgCl, does not conduct electricity because AgCl does not dissociate to give ions or electrons.

Explanation:

Solid silver (Ag) is considered to be a good conductor of electricity because there are more number of free electrons or movable atoms are present in it.

As electricity is the flow of ions or electrons. So, more is the number of ions or electrons present in a substance more will be its conductivity.

Whereas solid silver chloride is a precipitate that is insoluble in water and therefore, it will not give ions or electrons.

As a result, silver chloride is not able to conduct electricity.

A 3.20-mol sample of gas occupies a volume of 350. mL at 300.0 K. Determine the

pressure of the gas.

Answers

Answer:

[tex]P \approx 225atm[/tex]

Explanation:

From the question we are told that:

Moles of sample n=3.20_mol

Volume V=350mL

Temperature T=300k

Generally the equation for ideal gas is mathematically given by

 [tex]PV=nRT[/tex]

 [tex]P=\frac{nRT}{V}[/tex]

 [tex]P=\frac{3.20*0.08206*300}{350*10^{-3}}[/tex]

 [tex]P=225.079atm[/tex]

 [tex]P \approx 225atm[/tex]

Bacteria live on skin of humans. The bacteria receive food and shelter form human beings. Most bacteria are harmless and pose little or no threat to humans. This is an example of

Answers

Answer: symbiotic relationship

Explanation:

DIRECTIONS: Underline the selected word item that best completes the statements.

1. (Climate, Weather) is an overall atmospheric condition of a place of 30 years

and more while (Climate, Weather) is a condition for a short period of time.


2. (Climate, Weather) is influenced by latitude, altitude, ocean current, and

topography.


3. The (higher, lower) the altitude, the (colder, warmer) the climate.


4. (Windward, Leeward) area of the mountain forms precipitation while (Windward,

Leeward) gives dry air and warm weather.


5. Ocean currents bring (cold, warm) water and rain from the equator to the

poles and (cold, warm) water from the poles toward the equator​

Answers

Explanation:

(Climate, Weather) is an overall atmospheric condition of a place of 30 years and more while (Climate,Weather) is a condition for a short period of time.

2. (Climate, Weather) is influenced by latitude, altitude, ocean current, and topography.

3. The (higher, lower) the altitude, the (colder, warmer) the climate.

4. (Windward, Leeward) area of the mountain forms precipitation while (Windward,Leeward) gives dry air and warm weather.

5. Ocean currents bring (cold, warm) water and rain from the equator to the poles and (cold, warm) water from the poles toward the equator

The [H+] is 0.001 M. What is the pH?

Answers

Hopes this helps:

Answer: So the pH of the solution is 4.

Water absorbs energy when it undergoes___
A. freezing
B. deposition
C. condensation
D. melting

Answers

Water absorbs energy D. Melting

Answer:

d. melting

As heat enters the water the particles move much faster, bumping into each other. Therefore, more heat means more energy!

Hopesthis helps!

How does renal regulation at the kidneys work in removing acid and restoring equilibrium

Answers

Answer: The kidneys help maintain the acid–base balance by excreting hydrogen ions into the urine and reabsorbing bicarbonate from the urine.

Explanation:

Identify the limiting reactant when 2.20 g of calcium reacts with 4.5 g of chlorine gas to produce calcium chloride. Write a balanced equation before starting.

I"LL GIVE YOU 30 POINTS AND NAME YOU BRAINLIEST IF YOU ANSWER THIS FOR MEEEEE PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ ITS FOR MY STUDY GUIDE!!!!!!

Answers

Answer:

2.20*4.5=?? you have to solve the multiplication ok, or its not learning

Explanation:

Which combinations of particles form ionic bonds/compounds?

Answers

Answer:

Iconic bond is formed by cation and anion. A compound is made when atoms of two or more elements bond in a chemical reaction.

Explanation:

Using a Punnett square, what genotypes would you expect in the F2 offspring?
F1 generation
F2 (option A)
F2 (option B)
Father
Father
Father
A
A
A
A
A
a
Mother
Mother
Mother
a
Аа
«Аа
a
Аа
Аа
А
AA
Аа
a
Аа
Аа
a
Аа
Aai
aa
a
А

Answers

Answer:

can you answer mine i will help you! please

Explanation:

How many moles of gallium chlorate, Ga(ClO3)3, must react in order to produce 674 kJ of energy according to the following reaction? 2 Ga(ClO3)3 à 2 GaCl3 + 9 O2 DH = - 130.4 kJ

Answers

Answer:

10.3 mol Ga(ClO₃)₃

Explanation:

Let's consider the following balanced thermochemical equation.

2 Ga(ClO₃)₃(s) ⇒ 2 GaCl₃(s) + 9 O₂(s)  ΔH = - 130.4 kJ

According to the balanced thermochemical equation, 130.4 kJ of heat are released when 2 moles of gallium chlorate react. The number of moles of gallium chlorate that must react to produce 674 kJ of energy is:

674 kJ × 2 mol Ga(ClO₃)₃/130.4 kJ = 10.3 mol Ga(ClO₃)₃

Thermochemical equations are chemically balanced equations that take into account both the energy change and the physical states of all reactants and products. Energy is a reactant in an endothermic process, whereas it is a product in an exothermic reaction. Here the moles of Ga(ClO₃)₃ is  10.3 mol.

Let's consider the following balanced thermochemical equation.

2Ga(ClO₃)₃(s) ⇒ 2GaCl₃(s) + 9O₂(s)  ΔH = - 130.4 kJ

According to the balanced thermochemical equation, 130.4 kJ of heat is released when 2 moles of gallium chlorate react. The number of moles of gallium chlorate that must react to produce 674 kJ of energy is:

674 kJ × 2 mol Ga(ClO₃)₃ / 130.4 kJ = 10.3 mol Ga(ClO₃)₃

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A pacemaker:
A. sends electrical impulses to a prosthesis, causing it to move
through brain signals.
B. measures the distance traveled with a prosthetic leg.
C. tracks the speed traveled with a prosthetic leg and adjusts
movements accordingly.
D. sends electrical impulses to the heart, causing it to beat more
regularly
SUEMIT

Answers

Answer: D. Sends small electrical impulses to the heart, causing it to beat more

Explanation: A pacemaker is implanted in the chest and helps to treat abnormal heart rhythms especially those causing your heart to skip beats or beat too slow.

What is the fixer solution equation?

Answers

Answer:

Fixation involves these chemical reactions (X = halide, typically Br−): AgX + 2 S2O32− → [Ag(S2O3)2]3− + X. AgX + 3 S2O32− → [Ag(S2O3)3]5− + X. In addition to thiosulphate the fixer typically contains mildly acidic compounds to adjust the pH and suppress trace amounts of the developer.

How many moles of H2O are produced from 3 moles of oxygen? 2H2 + O2 --> 2H2O

Answers

Answer: 6 mol

Explanation:

From the equation, we know that for every mole of oxygen consumed, 2 moles of water are produced.

This means that if 3 moles of oxygen are consumed, 3(2) = 6 mol of water are produced.

HELPPPP ASAPP 10 POINTS

Answers

Constructive interference. Constructive Interference occurs when the maxima of two waves add together to create a wave maxima of the two individual waves combined.

proper significant figure: 27.01 + 14.369

Answers

Answer:

put the bigger number on top then add

Explanation:

41.369


Marie Curie's work with radioactive materials eventually lead to her death. At the age of 66, what
disease did Madame Curie die from?

Answers

Answer:

Radiation-induced Luekimia

Explanation:

They worked with many radioactive elements, so it caused Leukemia which is

a  disease in which the bone marrow and other blood-forming organs produce increased numbers of immature or abnormal leukocytes.

Hoped this helped

Energy 1:Question 3

Maria walked on a beach made mostly of sand. She walked

barefoot on the beach early in the morning, and the sand was

cool. When she walked in the same area in the afternoon, the

sand was hot. Which statement best describes why the

temperature of the sand increased?

Select one:

The atoms in the sand were moving more quickly.

Answers

Answer: The statement, atoms in the sand were moving more quickly best describes why the  temperature of the sand increased.

Explanation:

As Sun rises in the morning everyday and the heat energy radiations given by the Sun falls on a number of objects on our surroundings. As a result, the objects absorb this heat energy till afternoon due to which they become hot.

Hence, atoms of the objects gain kinetic energy due to which they move quickly. This shows that the temperature of the object (sand here) increases.

When Maria walked in the same area in the afternoon, the sand was hot as its particles have gained kinetic energy due to which they move rapidly from one place to another. Hence, sand feels more hot in the afternoon in the same area where she walked.

Thus, we can conclude that the statement the atoms in the sand were moving more quickly best describes why the  temperature of the sand increased.

How much of a 60.0 gram sample of Carbon-14 DECAYED after 17,100 if 5
its half-life= 5,700 years? *
7.50 g
52.5 g
15.0 g
30.0 g

Answers

The answer is A.7.50

The mass of  60 g of carbon -14 remains after 17100 years is 7.50 g. Thus, option a is correct.

What is radioactive decay?

The unstable isotopes of atoms undergo radioactive decay by the emission of charged particles. The radioactive decay is a first order reaction.

The rate constant k = 1/t ln (M0/Mt)

where, M0 and Mt be the initial mass and mass after t respectively.

Given the initial mass = 60 g

half life t1/2 = 5700 years.

decay constant  k =   0.693 / t1/2

= 0.693 / 5700 = 0.00012 yr⁻¹

Apply the values in the first order rate constant equation as follows:

0.00012 yr⁻¹ = 1/ (17100 yrs) ln (60/Mt)

  60/Mt = 7.996    

        Mt = 7.50 g.

Therefore, the mass of the mass of 60 g of carbon -14 remains after 17100 years would be 7.50 g.

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Calculate the number of moles found in 3.045x1024 atoms of helium.

PLS HELP

Answers

Explanation:

so for this u have to use this equation where

Moles = number of particle/6.02×10^23

= 3.045 × 10^24/6.02×10^23

= 5.0581

write it to 3 S.F so 5.06 moles

Which of these is a polar molecule?
1. SH2
2. CO2
3. F2

Answers

the answer would be 1
Other Questions
PLEASE PLEASE HELPPP!!!Read the story Hummingbird and Heron:Many years ago, when the world was so young that the sun was still new in the sky, there lived two friends. Heron was large and slow, with a long, gangly neck and big, floppy wings. Hummingbird was tiny and swift, with wings that moved so quickly that they buzzed and a slender beak as sleek as a needle.Heron and Hummingbird both loved to eat fish from the river. Every morning, Heron would fish to her heart's content, eating until her stomach was so round and heavy that she had to waddle back to shore. Every afternoon, Hummingbird would fish and feast until he was so heavy that his tiny, buzzing wings could no longer keep him in the air. Heron and Hummingbird thought they were the luckiest birds in the world.One afternoon, Hummingbird did not catch as many fish as usual. He fished and he fished, but his line came up empty more times than it ever had before. He flew to Heron's house."Heron! Heron!" he called. "Why have you eaten all the fish?"Heron bustled to her door, angry and surprised at her friend's accusation."Me? Eat all the fish?" she squawked. "I barely caught anything this morning! My poor stomach has been growling all day."The two birds began to argue over who had eaten more fish. Finally, Hummingbird raised his wing to stop the debate."I do not think there are enough fish left in the river for both of us," he said. "Let's have a race. Whoever reaches the dead tree on the other side of the hills first owns all the fish. The loser has to find something else to eat."Heron agreed. They prepared to race. Hummingbird was certain that he would win. He watched Heron as she awkwardly stretched her wings and prepared to fly. This will be like catching fish in a barrel, he thought with a grin.Hummingbird zoomed past Heron as soon as the race began. He flew so far ahead that he lost sight of her behind him. He slowed down as he passed a patch of wildflowers. They smelled so sweet that he had to stop and look at them more closely. Hummingbird just had to try some of their nectar. He drank until his belly was heavy and his eyelids drooped. Perhaps just a short nap, he thought, as he settled himself into a nest of soft leaves.It was late in the day when Hummingbird woke up. He stretched his wings and glanced at the sky. He could just make out the shape of Heron, flying slowly but surely toward the dead tree. She was almost done with the race! Hummingbird zipped into the air and flew as fast as he could, but it was too late. Heron reached the tree first. From that day forward, Heron owned the fish, and Hummingbird lived on nectar.What is the theme of the story Hummingbird and Heron? A. A full stomach is not as important as friendship.B. Don't get distracted by fresh fish when racing.C. Sharing shows care for others. D. Slow and steady wins the race. Write a letter to your friend who lives in.abroad describing population situation inNepal and its merits & demerits. (PLEASE HELP!!! THIS IS TIMED!! I WILL MARK THE BRAINIEST IF YOUR ANSWER IS CORRECT!!!)Directions: Write the equation of the line in fully simplified slope-intercept form. Why is Georgia important to US history? it needs to be 5-7 sentences long Awnser all of them if you can its really EASY im feelin generous today 30 pts A firm has common stock with a market price of $100 per share and an expected dividend of $5.61 per share at the end of the coming year. A new issue of stock is expected to be sold for $98, with $2 per share representing the underpricing necessary in the competitive capital market. Flotation costs are expected to total $1 per share. The dividends paid on the outstanding stock over the past five years are as follows: The cost of this new issue of common stock is ________. what do the term phycobiont and mycobiont signify ? These triangles are similar and the sides are proportional. Which proportion correctly describes the situation below? classify the pair of angles shown. Polycomb group (PCG) gene mutants cause ectopic expression of Antennapedia (Antp) and other homeotic genes. The PCG protein encoded by the PgG gene has a domain that binds to methylated histone H3. This finding supports which of the following hypotheses? a) that PCG mutants lack Antp mRNA compared to the wildtype b) that PCG repress transcription by interacting with chromatin c) that PCG binds to Antp genes and serves as a transcription activator d) that PCG activates Antp genes in tissues e) that PCG is allosteric activator of RNA polymerase II In a federal system of government which government is supreme Any anime suggestions?? Cules son las bases nitrogenadas que componen el ARN How does the speaker introduce his topic in paragraph one he states the nations problems he shows that the government is doing what you can see can you show us concert at the difficulty of the problems D If x= 4, calculate the value of: 3x2 + 4x Search the internet to understand the reaction between (Zno) & (HNO3).a) Describe what happens to the first spoonful of powder when he mixes it with the acid.b) Describe what would happen if the student kept adding zinc oxide to the nitric acidafter the reaction between the acid and metal oxide was complete. Evaluate the expression if x = -5 and y = -2 Would you be more likely to get solar panels on your home or an electric vehicle because of tax incentives? Why or why not? 1 . aqueducts3ruling class in Rome2 . slaves7merchants and bankers3 . aristocrats4farmers and industrial workers4 . common citizens1lowest class of people in Rome5 . Latin2threat to Roman rulers6 . Christianity6used by disciples to spread teachings of Christ7 . equestrians8still in use today8 . good road system5language which is the basis for Spanish,French, and Italian. Who was the first US president to travel to communist China and Russia?Jimmy CarterBill ClintonRichard NixonGerald Ford