Maggie has 4 binders with 30 stamps in each binder. She has 3 binders with 36 baseball cards in each binder. If she gives away 45 stamps to a friend, how many stamps and cards does she have left? Maggie has stamps and cards left.

Answer:

9 moles of O²

Explanation:

Hope this helped,

Philip

Brainliest always appreciated! <3

Answer: it floats because it’s less dense than water

Explanation: since it’s less dense it floats

Answer:

Explanation:

Total volume of solution = 100 mL .

Total mass of the solution = 100 x 1.01 g

= 101 g

specific heat of solution = 4.184 J/g-°C

rise in temperature = 8.65  °C

heat released = mass x specific heat x rise in temperature

= 101 x 4.184 x 8.65

= 3655.35 J

= 3.655 kJ .

qsolution = 3.655 kJ .

Answer:

C)

atomic number

Explanation:

C)

atomic number is also the number of protons an atom has and this number will never change unlike number of neutrons or electrons.

The smallest unit that combines chemically or physically to form molecules and compounds is called an atom. They are composed of electrons and protons and neutrons in the nucleus.

The correct answer is:

Option d. To achieve a more stable electron configuration for both atoms.

This can be explained as:

Therefore to achieve stable configuration atoms bond with other atoms.

To learn more about atoms and stability follow the link:

https://brainly.com/question/7615695

There is differ motion you go through the day translational, rotational, periodic, and non periodic motion.

Hope this helped you

Sorry if it wrong

Answer:An atom

Explanation:

Because  molecules more spread out and have things that connnect them and are not bunched up togoether

And Atoms are all packed up like in the picture

Hope this helps!:D

The diagram shown is that of a molecule as it is made up of two different kinds of atoms.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

Learn more about atom,here:

https://brainly.com/question/13654549

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Answer: Crocodile is a reptile whereas sheep and gorilla are the mammals.

Explanation:

Crocodile, sheep, and gorilla have alimentary canal in their digestive system. The urea is the common excretory waste.

Mouth is typically large in case of crocodile and comparatively small in sheep and gorilla.

In crocodile more sharp teeth are present as compared to sheep and gorilla for mastication of food and capturing the prey like fish or large animals like zebra.

The crocodile palate is more stronger than sheep and gorilla because it enable it to chew the bones of the prey.

Answer:

Depends since Chemical equation is not written clearly...

Explanation:

if if the comma represents an equal sign then I would assume that this would be a single replacement... however if this is all one equation I would assume it is a double replacement.

The type of chemical reaction shown in the question is a: A. Single replacement.

A chemical reaction can be defined as a chemical process involving the continuous transformation (rearrangement) of either the ionic, atomic or molecular structure of a chemical element, especially through the breakdown and formation of chemical bonds, in order to produce a new chemical compound.

In Chemistry, there are five (5) main types of chemical reaction and these include;

A single-replacement reaction is also referred to as a single-displacement reaction and it can be defined as a type of chemical reaction wherein a single (one) chemical element of the reacting chemical compound is replaced (substituted) by a similar chemical element.

Basically, a single-replacement reaction typically involves a single element ([tex]O_2[/tex]) replacing another element ([tex]Cl_6[/tex]) within a chemical compound ([tex]SeCl_6[/tex]).

[tex]SeCl_6+O_2[/tex]  ----> [tex]SeO_2 + 3Cl_2[/tex]

In conclusion, the above chemical reaction is a single-replacement reaction because oxygen gas replaces the chlorine molecules in selenium hexachloride.

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

Answer:

i think just these

NaCl

CaCl2

Answer:

f = 3.53×10⁵ s⁻¹

Explanation:

Given data:

Energy of photon = 2.34×10⁻²⁸ J

Frequency = ?

Solution:

h = 6.63 ×10⁻³⁴

Formula:

E = hf

2.34×10⁻²⁸ J = 6.63 ×10⁻³⁴ × f

f = 2.34×10⁻²⁸ J /  6.63 ×10⁻³⁴ Js

f = 0.353×10⁶ s⁻¹

f = 3.53×10⁵ s⁻¹

Answer:

Gravitational potential energy may be converted to other forms of energy, such as kinetic energy. If we release the mass, gravitational force will do an amount of work equal to mgh on it, thereby increasing its kinetic energy by that same amount (by the work-energy theorem).

Explanation:

Answer: Many argue that modern chemical science began when scientists started ... Figure 3.2 The average mass of a chloroform molecule, CHCl3, ... 5.00gCu(molCu63.55g)(6.022×1023atomsmol)=4.74×1022atoms of copper

Explanation: hope this helps

The activity series of metals is an empirical tool used to predict products in displacement reactions and reactivity of metals with water and acids in replacement reactions and ore extraction. It can be used to predict the products in similar reactions involving a different metal.

Answer:

The identity of an element is its atomic number, which is the number of protons within the nucleus of one of its atoms.

Explanation:

Answer:

Explanation:

The mass of an object can be found by using the formula

[tex]m = \frac{f}{a} \\ [/tex]

f is the force

a is the acceleration

From the question we have

[tex]m = \frac{18}{5.8} \\ = 3.103448...[/tex]

We have the final answer as

Hope this helps you

Answer:

i think it would be 35

Explanation:

r

Answer:

what is scientific model

Explanation:

Answer:

Itlolk

Explanation:

Answer:

up down up down thats the pattern

Explanation:

[tex]\huge\boxed{Option C}[/tex]

Calorimeter is device used for the measurement of heat. In a calorimeter we can use the temperature change of water to quantify an amount of heat.  A calorimeter just captures all the energy released (or absorbed) by a reaction in the water. So Option A and B are wrong as calorimeter don't have anything to do with providing the heat or letting the the heat in, as it is the insulated calorimeter too.

In the formation of any bond there is equal amount of heat required as to break that bond. It means Energy released in the making of bond is equal to the energy required in the breaking of the bond. So Option D is wrong as it says we need more energy in making then breaking.

Enthalpy is the total heat content of the system. As we provide energy to the reactants and the product is formed, so The enthalpy(heat content) of product is more than the Enthalpy of the reactant, Thus Option C is correct.

Enthalpy is denoted by H or Q, its formula is,

                                       H = U + PV

Where,

           U is internal energy

           PV is equals to Work done ; P = Pressure, V = Volume

Molar mass

= Atomic mass of Na + Atomic mass of N + Atomic mass of O3

= 23 + 14 + (16×3)

= 23 + 14 + 48

= 85 g per mole

Answer:

Yes, both are molecules

Explanation:

A molecule is the smallest particle of a substance that can exist alone and still retain the chemical properties of that substance.

Molecules are usually made up of two or more atoms of the same or different elements chemically combined together. for example, two atoms of hydrogen will combine to form a molecule of hydrogen gas. Similarly, an atom of hydrogen can combine with an atom of chlorine to form hydrogen chloride gas molecule.

Ozone is a molecule which consists of three atoms of oxygen chemically combined together.

Similarly, water is a molecule composed of two atoms of hydrogen and an atom of oxygen chemically combined together.

Answer:

nerve cell, nervous tissue, brain, nervous system, human.

Explanation:

The order is from the simplest to the most complex, within the simplest would be the cellular structure, then the organs come, then systems (a set of organs in multidirectional operation among them) and finally the human, which is a set of systems .

Amorphous solids have two characteristic properties. When cleaved or broken, they produce fragments with irregular, often curved surfaces; and they have poorly defined patterns when exposed to x-rays because their components are not arranged in a regular array. An amorphous, translucent solid is called a glass

Answer:0,25 g/cm3 creo

Explanation:densidad es masa entre volumen

Answer:

0.25 g/cm³

Step-by-step explanation:

As we know

The density is given by

Density = Mass / Volume

Putting the values

Density = 5g / 20 cm³

Density = 0.25 g/cm³

Sorry if wrong I'm not great at math!

MW of gas : 124.12 g/mol

Density is a quantity derived from the mass and volume  

Density is the ratio of mass per unit volume  

With the same mass, the volume of objects that have a high density will be smaller than objects with a smaller type of density  

The unit of density can be expressed in g/cm³ or kg/m³  

Density formula:  

[tex]\large {\boxed {\bold {\rho ~ = ~ \frac {m} {V}}}}[/tex]

ρ = density  

m = mass  

v = volume  

glass vessel wieight = 50 g

glass vessel + liquid = 148 ⇒ liquid = 148 - 50 =98 g

volume of glass vessel :

[tex]\tt V=\dfrac{m}{\rho}=\dfrac{98}{0.989}=99.1~ml[/tex]

An ideal gas :

m = 50.5 - 50 = 0.5 g

P = 760 mmHg = 1 atm

T = 300 K

[tex]\tt PV=\dfrac{mass(m)}{MW}.RT\\\\MW=\dfrac{m.RT}{PV}\\\\Mw=\dfrac{0.5\times 0.082\times 300}{1\times 0.0991}=124.12~g/mol[/tex]