The photo shows a frozen juice pop on a hot day.
Which detail could be added to the photo to model the thermal energy
transfer that is taking place?


A. Arrows pointing from the juice pop to the sun

B. Arrows pointing from the persons hand to the juice pop

C. Circles with arrows on the top of the juice pop

D. Arrows pointing from the sun to the juice pop

Answer:

:)

Explanation:

They are all properties of Matter. weight and formula wouldn't make sense.

Atomic number equals the number of protons or electrons. Atomic mass equals the number of protons and neutrons

Answer:

2 NaBr + 1 Ca(OH)2 ---> 1 CaBr2 + 2 NaOH

Answer:

There are two phases involved in chromatography; the 'stationary phase', in this case the paper, and the 'mobile phase', the salt solution. Sort the 'Smarties' into piles of the same colour.

Explanation:

Answer:

202.5 K

Explanation:

Answer:

Carbon dioxide into energy

Explanation:

Plants are autotrophs and prepare their own food through the process of photosynthesis. During the process of photosynthesis, plants utilizes, carbon dioxide and water in the presence of sunlight and produce energy and oxygen.

Plants cell during photosynthesis, uses carbon dioxide and transform it into energy in the form of glucose and releases oxygen.

Hence, the correct answer is "Carbon dioxide into energy".

Answer:

Magnesium

0.003mole

Explanation:

The problem here entails we find the metal in the carbonate.

 For group 2 member, let the metal  = X;

 The carbonate is XCO₃;

 If we sum the atomic mass of the elements in the metal carbonate, we should arrive at 84g/mol

 Atomic mass of C = 12g/mol

                            O  = 16g/mol

 Atomic mass of X + 12 + 3(16)  = 84

  Atomic mass of X  = 84 - 60  = 24g/mol

The element with atomic mass of 24g is Magnesium

B.

Number of moles in 0.3g of CaCO₃:

     Molar mass of CaCO₃   = 40 + 12 + 3(16)  = 100g/mol

 Number of moles = [tex]\frac{mass}{molar mass}[/tex]  

 Number of moles  = [tex]\frac{0.3}{100}[/tex]   = 0.003mole

The concentration of this acid in moles per litre : 17.41

Given

99.5% acetic acid

density=ρ=1.05 g/ml

Required

the concentration (mol/L)

Solution

99.5% dan density 1.05 g/ml (MW acetic acid = 60 g/mol)

[tex]\tt 99.5\%\times 1.05\dfrac{g}{ml}\times \dfrac{1000~ml}{L}=1044.75~g/L\\\\\dfrac{1044.75~g/L}{60~g/mol}=17.41~mol/L[/tex]

Answer:

1) 3 2) 2 3) 1 4) 3

Explanation:

so on the reactant side (left), there is 2 H, 1 CO3, and 1 Fe. On the product side (right) there is 2 Fe, 3 CO3, and 2 H2. So to start I added a 3 in the first blank to make CO3 equal on both sides. In doing this, there is not 2 H, there is now 6 so I added a 3 in the 4th blank. Currently, H and CO3 are equal on both sides but not Fe. So I added a 2 in the 2nd blank. I didn't add anything in the 3rd blank so it is an understood 1.

The balanced equation

3H₂CO₃ + 2Fe → Fe₂(CO₃)₃ + 3H₂

Given

Reaction

H₂CO₃ + Fe → Fe₂(CO₃)₃ + H₂

Required

Coefficient of the reaction

Solution

aH₂CO₃ + bFe → Fe₂(CO₃)₃ + cH₂

Prioritize balancing the elements that form the most complex compounds

Fe, left = b, right = 2⇒b=2

C, left = a, right = 3⇒a=3

H, left = 2a, right = 2c⇒2a=2c⇒2.3=2c⇒6=2c⇒c=3

The equation becomes :

3H₂CO₃ + 2Fe → Fe₂(CO₃)₃ + 3H₂

Answer:

Mg2+

Explanation:

The most reactive ions from the given choices is the magnesium ion. This is because it is higher in the activity series of metals.

Zinc ion is below this specie in the activity series.

As a rule, ions above another on the activity series are generally more reactive than those below.

From any solution, magnesium ion will displace the zinc ion in such process.

The position of metallic ions determines their reactivity.

Answer:

High temperature and intense pressure may transform an igneous rock into a metamorphic rock with banded layers.  

Explanation:

A metamorphic rock is formed under high temperature and intense pressure may transform an igneous rock into a metamorphic rock with banded layers.

An igneous rock is often formed when molten magma erupts from the earth's crust. The molten magma is usually very hot but cools off with time to form a solid mass.

This rock that was first formed eventually gets transformed in the course of time as it is acted upon by high temperature and intense pressure which gradually transforms the igneous rock into a metamorphic rock with banded layers.

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Answer:

Rinse With distilled water

Answer:

four elements

Explanation:

He = 1s²

Be = 1s² 2s²

C = 1s² 2s² 2p²

Mg = 1s² 2s² 2p⁶ 3s²

Si = 1s² 2s² 2p⁶ 3s² 3p²

Ca = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

Valence electrons are those electrons which are present in outer most electronic shell.

He, Be, Mg, Ca these four elements have 2 valence electrons.

While Si and C have four valance electrons.

The total number of the elements above with 2 valence electron is four.

The electronic configurations of the elements are given:

He = 1s²

Be = 1s² 2s²

C = 1s² 2s² 2p²

Mg = 1s² 2s² 2p⁶ 3s²

Si = 1s² 2s² 2p⁶ 3s² 3p²

Ca = 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

Valence electrons are those electrons which are present in outer most electronic shell.

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Answer:

the answer is in the image

Explanation:

Answer:

Explanation:

2Al + 3Cl2 --> 2AlCl3

Ag2O + Be -----> 2Ag + BeO

4K + O2 ---> 2K2O

CoP  + 3NaBr ---> CoBr3 + Na3P

Si +  Hg2S ---> SiS2 + Hg

6Li + Ni3N2 --- > 2Li3N + 3Ni

3Ca + 2K3N  --> Ca3N2 + 6K

SnS2 + 2F2 --> SnF4 + 2S

That would be B: 33%, but please correct me if I'm wrong ^^

Answer:

that would be b:33 i believe pls dont blame met

Answer: 1. Actually, mass does not affect velocity. The sum of all forces  that act on the object causes the acceleration a while the mass m resists it.

2. just say it's the force into the height that it covers from one point to another. ... (a) At point .

Explanation:

The problem is about Conservation of Energy, between Potential Energy and Kinetic energy changes.

Given is friction-less roller coaster. it is also assumed that there is no loss of energy due to air friction.

And so regardless of what path the ball takes, the work done by gravity doesn't depend on the path, it only depends upon the height through which it falls.

3. The principle of the conservation of mechanical energy states that the total mechanical energy in a system (i.e., the sum of the potential plus kinetic energies) remains constant as long as the only forces acting are conservative forces.  

Answer:

oatmeal with raisins is a heterogeneous mixture. The raisins may be solid, but turn the bowl over and you will see the mixture as a whole most definitely acts like a liquid. Mud puddles are a heterogeneous mixture.

Explanation:

Answer:

An oatmeal cookie is a heterogeneous mixture, which contains multiple distinct components

Answer:

c

Explanation:

solid to gas directly

Answer:

yes they are broken down into smaller units

Answer:

1.63 mols

Explanation:

to convert mols to formula unit, or formula unit to mols, u need the avagadros number which is 6.022*10^23 and the number of mols/formula units

so since the given is formula units, u just have to divide the number by 6.022*10^23 to get the amount of mols

9.82*10^23 / (6.022*10^23) = 1.63 mols

*be careful for sig figs

The molar concentration of the original HF  solution : 0.342 M

Further explanation

Given

31.2 ml of 0.200 M NaOH

18.2 ml of HF

Required

The molar concentration of HF

Solution

Titration formula

M₁V₁n₁=M₂V₂n₂

n=acid/base valence (amount of H⁺/OH⁻, for NaOH and HF n =1)

Titrant = NaOH(1)

Titrate = HF(2)

Input the value :

[tex]\tt 0.2\times 31.2\times 1=M_2\times 18.25\times 1\\\\M_2=0.342[/tex]

Answer:

true

Explanation:

it says none renewable so you can't reuse it

Answer:

false

Explanation:

becuase nonrenewable means it can not be replenished

Answer:

a.cocentration es la respuesta

Explanation:

Note: Molar masses of elements can be found online or in the periodic table.

Moles of Magnesium

= 3.60g / (24.3g/mol) = 0.148mol.

Moles of Chlorine

= 10.65g / (35.45g/mol) = 0.300mol.

Mole ratio of Magnesium to Chlorine

= 0.148mol : 0.300mol = 1 : 2.

Hence we have the empirical formula MgCl2.

Moles of Lithium

= 9.1g / (6.94g/mol) = 1.311mol.

Moles of Oxygen

= 10.4g / (16g/mol) = 0.650mol.

Moles ratio of Lithium to Oxygen

= 1.311mol : 0.650mol = 2 : 1.

Hence we have the empirical formula Li2O.

Answer:

No

Explanation:

The stronger the intermolecular forces the molecules tend to stay in the liquid phase. Compounds with weak intermolecular forces are more volatile and more molecules overcome those forces to pass to the gas phase.

Answer:

The way you can know which compound in a solution is a solvent is by usually just determining which substance is a solute and which is a solvent. The solute is when it is dissolved and it takes on the characteristics of the solvent.

Explanation:

Hope this helps!

Answer:

Cold Front. A side view of a cold front (A, top) and how it is represented on a weather map (B, bottom). ...

Warm Front. ...

Stationary Front. ...

Occluded Front.

Answer:

d = 5.23 g/cm³

Explanation:

Given data:

Volume of metal chips = 3.29 cm³

Mass of metal chips and paper = 18.43 g

Mass of paper = 1.2140 g

Density of metal = ?

Solution:

Mass of metal = combined mass - mass of paper

Mass of metal = 18.43 g - 1.2140 g

mass of metal = 17.22 g

Density:

d = mass/ volume

d = 17.22 g/ 3.29 cm³

d = 5.23 g/cm³