Someone pls help me I will make you brain

Answer:

6

Explanation:

bromine has 1, hydrogen has 4 and nitrogen has 1 therefore equaling 6

The number of atoms in NH₄Br is six.

An atom is a particle of matter that uniquely defines a chemical element. An atom consists of a central nucleus that is surrounded by one or more negatively charged electrons. The nucleus is positively charged and contains one or more relatively heavy particles known as protons and neutrons.

Atoms are the basic building blocks of matter. Anything that takes up space and anything with mass is made up of atoms.

In the given formula, there is one N atom, four H atoms and one Br atom making a total of six atoms.

Therefore, the number of atoms in NH₄Br is six.

Learn more about Atoms, here:

https://brainly.com/question/30898688

#SPJ2

Answer:

Qué es Crecimiento poblacional:

El crecimiento poblacional se refiere al incremento del número de habitantes en un espacio y tiempo determinado, el cual se puede medir a través de una fórmula aritmética. También se puede emplear como sinónimo el término crecimiento demográfico.

Cuando se hace mención al crecimiento poblacional se puede hacer referencia a cualquier especie animal, sin embargo, se suele usar para referirse a los seres humanos, en especial cuando se realizan investigaciones acerca del crecimiento de la población.

Los datos que se obtienen de estos análisis son de gran importancia, tanto para los gobiernos de un país como, para las diferentes organizaciones internacionales.

Cabe resaltar que durante el siglo XX la población de seres humanos ha crecido y sigue creciendo en gran porcentaje, lo que ha generado preocupación, en especial por sus consecuencias sobre el uso y cuidado de los recursos naturales, entre otros.

Las zonas urbanas son las que presentan mayor crecimiento demográfico, así como, los países en vías de desarrollo. Por el contrario, el crecimiento poblacional es menor en los países desarrollados.

Por ejemplo, el crecimiento poblacional en México ha ido en aumento a lo largo de su historia, es el país con más habitantes hispanohablantes en América Latina. México tiene una población aproximada a 130 millones de habitantes, y se estima que seguirá creciendo gracias a diversos factores gracias a su continuo desarrollo político, económico y social.

Answer:

1.66 M

Explanation:

Molarity = moles/L solution

We have the following data:

mass NaCl = m = 63 g

volume of solution = V = 0.65 L

Thus, we first convert the mass to moles with the molar mass of NaCl (MM):

MM(NaCl) = 23 g/mol Na + 35.4 g/mol Cl = 58.4 g/mol

moles NaCl = m/MM = 63 g/(58.4 g/mol)= 1.08 mol

Finally, we divide the moles into the volume of solution to calculate the molarity:

M = moles NaCl/V = 1.66 mol/L

Answer:

CO₃²¯(aq) + 2H⁺(aq —> H₂O(l) + CO₂(g)

Explanation:

The net ionic equation for sodium carbonate (Na₂CO₃) and sulfuric acid (H₂SO₄) can be obtained as follow:

Na₂CO₃ + H₂SO₄ —>

In solution, Na₂CO₃ and H₂SO₄ will dissociate as follow:

Na₂CO₃(aq) —> 2Na⁺(aq) + CO₃²¯(aq)

H₂SO₄(aq) —> 2H⁺(aq) + SO₄²¯(aq)

Na₂CO₃(aq) + H₂SO₄(aq) —>

2Na⁺(aq) + CO₃²¯(aq) + 2H⁺(aq) + SO₄²¯(aq) —> 2Na⁺(aq) + SO₄²¯(aq) + H₂O(l) + CO₂(g)

Cancel out the spectator ions (i.e Na⁺ and SO₄²¯) to obtain the net ionic equation.

CO₃²¯(aq) + 2H⁺(aq —> H₂O(l) + CO₂(g)

Answer: Some are solid, some are gaseous, a few are liquid. Some are metallic: they have a peculiar lustre; some are coloured (like sulfur) or colourless. Some have a low density; some have a high density. Some are malleable and ductile; some are brittle. Some conduct electricity and heat well; some don’t.

Many metals tend to have structural uses. Nonmetallic elements less so.

Metals tend to have crystal forms featuring close-packed centro-symmetrical structures. Nonmetallic elements tend to have crystal structures featuring more open and directionally packed structures.

Some are especially toxic; some are essential to life; some are both depending on exposure level.

Most are stable; some are less so.

Some elements are highly reactive; some are almost inert (helium, neon, and argon may be completely inert in ambient conditions).

Many metals have basic oxides; quite a few oxides of nonmetallic elements form acids when they are dissolved in water. Some elements can go both ways.

There are many generalisations you can make about metallic and nonmetallic elements, and quite a few exceptions at the margins.

Explanation:

State and explain the three basic properties of element.

Some properties of an element can be observed only in a collection of atoms or molecules of the element. These properties include color, density, melting point, boiling point, and thermal and electrical conductivity.

[tex] \\ [/tex]

Answered by - ItzMaster

Answer:

0.852 mol

Explanation:

First we convert 4.00 g of helium (He) into moles, using its molar mass:

4.00 g ÷ 2 g/mol = 2 mol He

To answer this problem we can use Avogadro's law, which states that at constant pressure and temperature:

V₁n₂=V₂n₁

Where:

We input the data:

And solve for n₂:

Answer:

Explanation:

It is a 3s electron

Answer:

Explanation:

Bird courtship and mating dances include many unique ways to attract mates. Learn about their courtship behaviors and why they matter. ... When birders recognize courting birds, they can be sure to avoid disturbing ... the charming songs used to woo partners can help distinguish species so birds are sure ...

Answer:

How many grams are there in 1x10^24 molecules of BCl3? I use 117.17 as the molecular weight.

Looking for fresh, preservative-free food? Look no further!

How many grams are there in 1x10^24 molecules of BCl3? I use 117.17 as the molecular weight.

Did you try approaching this problem with dimensional analysis?

We know:

1×1024 molecules

117.17 g/mol

And we want our answer to be in g.

molecules ×gmolדconversion factor"=g

The conversion factor has to have units of

molmolecules in order for everything to work out.

What property do you know that has units of molmolecules?

I don’t know of any, but I do know that Avogadro’s number has units of moleculesmol. So for our conversion factor, we divide by Avogadro’s number, which is the same thing as multiplying by its inverse.

1×1024 molecules×117.17 gmol×mol6.022×1023molecules=

The “molecules” units cancel. The “mol” units cancel. Leaving us with “g”. The dimensions (units) work out. Now just do the math with the numbers.

Explanation:

Answer:

water cycle and carbon cycle

Answer:

2.9x10⁻⁷L is the volume this amount of gas occupy

Explanation:

Assuming there are 7.8x10¹⁵ atoms

Based on the general gas law:

PV = nRT

Where P is pressure = 1atm

V is volume = Our incognite

n are moles of the gas:

7.8x10¹⁵ atoms * (1mol / 6.022x10²³ atoms) = 1.30x10⁻⁸ moles of gas

R is gas constant = 0.082atmL/molK

And T is absolute temperature = 273.15K at STP

Solving for Volume:

V = nRT/P

V = 1.30x10⁻⁸ moles*0.082atmL/molK*273.15K / 1atm

V = 2.9x10⁻⁷L is the volume this amount of gas occupy

Answer:

More directly.

Explanation:

Summer happens in Vermont when the sun's rays hit it more directly than any other time of year because this direct angle causes more warm environment. In the winter season, the angle of sun is about 45° due to which the place receives less solar radiation and the environment is cold while on the other hand, in the summer season the angle of the sun is about 90° due to which direct sunlight occurs on the region that causes warm and hot environment.

Answer:

1.0 L

Explanation:

Use the ideal gas law PV=nRT where P is pressure = 1100 kPa, V is the volume you are calculating, n is the number of moles which can be calculated by dimensional analysis and the periodic table, R is the ideal gas constant in this case R=8.314 kPa L/K mol, and T is the temperature in kelvins. See attached image for work through. 1.0 L is the answer with two sig figs.

Answer:

Las cargas eléctricas de los objetos son ambas positivas o son ambas negativas.

Explanation:

Si dos objetos presentan fuerzas eléctricas repulsivas entre sí, quiere decir que ambos tienen el mismo tipo de carga.

Las cargas iguales (positivo con positivo, o negativo con negativo) se repelen, mientras que las cargas diferentes (positivo con negativo) se atraen.

the outermost "layer..............

Answer:

Thin

Explanation:

Dry, hard rock from deep within the earth reacts with water and oxygen on the surface and creates new kinds of minerals

Brainly is erroneously blocking my answer from being posted due to nonexistent profanity and/or links, so I have attached an image of my written response. Please let me know if you have any problems seeing it.

Answer:

D

Explanation:

took the test

The statement 'increasing the temperature makes a reaction spontaneous in some situations'  indicates how temperature affects the spontaneity of a reaction.

A chemical reaction is a given process in which one or more reactants are converted into different products.

In conclusion, the statement 'increasing the temperature makes a reaction spontaneous in some situations'  indicates how temperature affects the spontaneity of a reaction.

Learn more in:

https://brainly.com/question/1156488

Answer:

a

Explanation:

Different versions of a gene are called alleles. Alleles are described as either dominant or recessive depending on their associated traits.

Answer:

Modal means the one that occurs most often (averages: mode). In maths, the mode is one of the most common ways to describe a set of data. ... The modal class is, therefore, the group with the highest frequency.

Answer:

Modal means the one that occurs most often (averages: mode). In maths, the mode is one of the most common ways to describe a set of data. ... The modal class is, therefore, the group with the highest frequency. For example: if you counted the number of pencils in different pencil cases and you decided to group them.

Explanation:

தமிழன் ❤

Answer:

d

Explanation:

Answer:

Diffusion and Brownian motion are the two processes which provide best evidence for the motion of particles in matter.

Answer:PV=nRT ideal gas law

P presdure

V volume

n number of moles of gas

R gas constant

T temperature

Explanation: V=nRT/P

2liters=nR300k/P

divide by 2 for the equation

1liters=nR150k/P

with nR remaining constant

Answer:

True, there’s Prokaryotic and Eukaryotic

Explanation:

Eukaryotic are more complex and HAVE a nucleus, Prokaryotic are less complex and don’t have a nucleus

Answer: chromosome

Explanation: :)

Answer:

Critical thinking is the intellectually disciplined process of actively and skillfully conceptualizing, applying, analyzing.

Explanation:

Answer:

the correct answers are:

B

E

G

Ionic compounds are compounds that are formed between metallic ions and non-metalilc ions and have high melting and boiling points

Ionic compounds are compounds which are formed as a result of the force of attraction between oppositely charged ions.

The properties of ionic compounds include:

Therefore, ionic compounds are compounds that are formed between metallic ions and non-metallic ions and have high melting and boiling points.

Learn more about ionic compounds at: https://brainly.com/question/3293836

#SPJ6