Answer:
its cold
Explanation:
Which has a higher melting point KF or KI?
Answer:
kf
Explanation:
If u like someone
how do u know if they like u back.
Answer:
The chemistry between you will be instant. Sometimes it may be hard to know if they like you back. Knowing that you can not live without them and that you bump in to each other everywhere you go, is fate at work. You might also just need the courage to ask them out. You never know what will happen if you try. :)
Answer:
You will feel it
Explanation:
Which of the following best describes a meridian of longitude?
A line that is drawn horizontally around the earth and is parallel to the Prime Meridian.
A line that is drawn vertically down the earth and is parallel to the equator.
A line that is drawn vertically down the earth but is NOT parallel to the Prime Meridian.
A line that is drawn horizontally around the earth and is parallel to the equator.
Answer:
A line that is drawn vertically down the earth but is not parallel to the prime Meridian.
Explanation:
A line that is drawn vertically down the earth but is NOT parallel to the Prime Meridian, best describes the meridian of longitude.
What is prime meridian?Prime Meridian is an imaginary line which divides the earth into eastern and western hemispheres
What do you mean by meridian of longitude?Meridian of longitude is an imaginary semicircle that runs from north to south direction and joins the two poles. All meridians are of the same length and meet at the poles.
Hence, option 3 is the answer.
To learn more about Prime Meridian and meridian of longitude here
https://brainly.com/question/20020992
#SPJ2
A sample of silver metal contains 1.91 X 1021 atoms. How many moles of silver is
this?
Answer:
1.91×1021/6.023×10^23
Explanation:
need thanks and make me brainiest if it helps you
PLEASE HELP ASAP!!
Choose the reaction that would not lead to the production of hydrogen gas. a. Cu + HCl
b. Na + H2SO4
c. K + H2O
d. Zn + HCl
Answer:
the answer should be c.
Explanation:
Cl2 +
NaBr
what’s this answer?!
Changes in either _______ or _______ can cause a change in the state of matter.
A. Temperature or Pressure
B. Temperature or Matter
C. Matter or Pressure
Answer:
A. Temperature or Pressure
Explanation:
ОА
H+ HH
O H+ H → He
Oc He+
TH
Не
ODH +
Η
>
Ao H+HH OH
santa said he will eat shower curtian at 2 am
Light radiation travels as a wave and does ________ require a _____________ for travel
Answer:
not
medium
Explanation:
Light radiation travels as a wave and does not require a medium for travel. Like all electromagnetic radiations, light does not need medium particles for its propagation.
Light radiation can pass through a vacuum of space without particles. This carries energy from one point to another in this region of space. Such form of waves are electromagnetic waves. Electromagnetic waves can be propagated through vacuums.Why when we chew a minty pice of gum your mouth and tounge is cold when you suck in air and when you drink moderaters help!!!!!!!!!!!! ASAP!!!!!!!!!!!!!!!!!!!
What Group is this element in?
Please answer （＾∇＾）
Calculate the molar mass of B(NO3)3 ?
The molar mass of B(NO₃)₃ - Boron nitrate : 196.822 g/mol
Further explanationIn stochiometry therein includes
Relative atomic mass (Ar) and relative molecular mass / molar mass (M)
So the molar mass of a compound is given by the sum of the relative atomic mass of Ar
M AxBy = (x.Ar A + y. Ar B)
The molar mass of B(NO₃)₃ - Boron nitrate :
M B(NO₃)₃ = Ar B + 3. Ar N + 9.Ar O
M B(NO₃)₃ = 10.811 + 3. 14,0067 + 9. 15,999
M B(NO₃)₃ = 196.822 g/mol
Label each of the following properties of sulfur as either á physical or chemical property.
Use the definition of a physical property and chemical property to back up your answer.
1. It reacts with hydrogen when heated
2. It is a yellow solid at room temperature
3. It is soluble in carbon disulfide
4. Its density is 2.97 g/cm3
5. It melts at 113°C
Answer:
Explanation:
1. It reacts with hydrogen when heated
Chemical property
2. It is a yellow solid at room temperature
Physical property
3. It is soluble in carbon disulfide
Chemical property
4. Its density is 2.97 g/cm3
Physical property
5. It melts at 113°C
Physical property
Physical properties tells us everything about what substance is when no change is occurring to its constituents.
It can be observed using apparatus and instruments. Examples are state of matter, color, odor, taste, texture, hardness, solubility in water, density, melting point and boiling point
Chemical properties are those properties that tell us about what a substance can do as regards to whether or not the substance reacts with other substances. Examples are flammability, rusting of irons, precipitation, decomposition of water by an electric current.
is the scientific method is the end result of the scientific process?
Answer:
The right response will be "No".
Explanation:
Again after findings being collected, this same scientific method does not stop. The phase of the experience seems to be the compilation, examination, interpretation as well as the integration of information. The reasoning underneath research methodology has been the methodology which includes making the significance of the findings developers measured.Why do the electron clouds around a central atom stay as far apart as possible?
Electron pairs around a central atom arrange themselves so that they can be as far apart as possible from each other. The repulsion between negatively charged electrons pairs in bonds or as lone pairs causes them to spread apart as much as possible
Explanation:
Where would crystals form beneath the surface
All of these happen beneath the surface
lava cooling
evaporation of a solution
hot water solutions
FIRST PERSON ANSWER GETS PTS, BRAINLIEST, And SUPRISE
What elements makeup Mars' atmosphere?
Answer:
Carbon dioxide or co^2
Explanation:
PLEASE I NEED HELP!!
You find a ring with a mass of 89.2g. You fill a graduated cylinder up with 10mL of water
and put the ring into the cylinder. The water mark rises up to the 20mL mark. What is
the ring made of?
Solids
Table of Densities
Density g/cm
Solids
2.56
Copper
2.64
Gold
3.52
Platinum
Density g/cm
8.92
Marble
Quartz
19 32
Diamond
214
O Marble
Quartz
Copper
Gold
Answer:
Ring is made up off copper.
Explanation:
Given data:
Mass of ring = 89.2 g
Volume of water = 10 mL
Volume of water + ring = 20 mL
Ring is made up of = ?
Solution:
Volume of ring = (Volume of water + ring) - Volume of water
Volume of ring = 20 mL - 10 mL
Volume of ring = 10 mL
Density:
Density = mass/volume ( 1 mL = 1 cm³)
d = 89.2 g/ 10cm³
d = 8.92 g/cm³
Thus, ring is made up off copper.
What happens when a wave hits an object?
A) the wave is reflected
B) the wave continues on
C) the wave is interfered with
D) the wave stops
Answer:
C) the wave is interfered with
WORTH 20 POINTS PLZZZ HELP WILL GIVE BRANLIEST PLZZZ
A toaster transforms P energy into Q energy.
What do P and Q most likely represent?
P represents electrical energy, Q represents thermal energy
P represents thermal energy, Q represents electrical energy
P represents chemical energy, Q represents radiant energy
P represents radiant energy, Q represents chemical energy
Answer: P represents electrical energy, Q represents thermal energy.
Explanation: The toaster takes electrical energy from the electrical socket through wires and converts that into thermal energy that heats up/toasts the bread.
Answer:
P represents electrical energy, Q represents thermal energy
Explanation:
I am sorry if I get this wrong, but when I put it in the sentence - A toaster transforms electrical energy into thermal energy - it made sense to me, so I think that is the answer. I am sorry if this does not help.
when liquid water changes into solid ice, it increases in ?
when liquid water changes into solid ice, it increases in mass
Can someone help me out with this thanks!
Answer:
a) Hydrogen and Fluorine
b) Lithium and Oxygen
c) Potassium and Phosphorus
d) Nickel and Oxygen
e) Mercury and Chlorine
Explanation:
The capital letters in the compounds represent a single element, while some elements have one capital letter and one small letter after it.
a) H & F
b) Li & O
c) K & P
d) Ni & O
e) Hg & Cl
Write equilibrium constant (KC) for the following reactions
1. N2(g) + O2(g) ⇌ 2NO(g)
2. N2(g) + 3H2(g) ⇌ 2NH3(g)
3. 2SO2(s) + O2(g) ⇌ 3SO3(g)
4. 2Fe(S) + 4H2O(g) ⇌Fe3O4(s) +4H2(g)
The equilibrium constant(Kc) is equal to the concentration of the products over the concentration of the reactants, and each coefficient of the compound in an equilibrium state
Further explanationThe equilibrium constant or Kc is the value of the concentration product in the equilibrium state of the substance in the right segment divided by the product of the substance in the left section, each of which has a reaction coefficient raised
solid (s) and liquid (l) have no concentration, so these two phases are not involved in the equilibrium constant KC (given the value = 1).
The equilibrium constant based on concentration (Kc) in a reaction
pA + qB -----> mC + nD
[tex]\tt Kc=\dfrac{[C]^m[D]^n}{[A]^p[B]^q}[/tex]
1. N2(g) + O2(g) ⇌ 2NO(g)
[tex]\tt Kc=\dfrac{[NO]^2}{[N_2][O_2]}[/tex]
2. N2(g) + 3H2(g) ⇌ 2NH3(g)
[tex]\tt Kc=\dfrac{[NH_3]^2}{[N_2][H_2]^3}[/tex]
3. 2SO2(g) + O2(g) ⇌ 3SO3(g)
[tex]\tt Kc=\dfrac{[SO_3]^3}{[SO_2]^2[O_2]}[/tex]
4. 2Fe(S) + 4H2O(g) ⇌Fe3O4(s) +4H2(g)
[tex]\tt Kc=\dfrac{[H_2]^4}{[H_2O]^4}[/tex]
For the reaction N2 + 3H2 - 2NH3, how many moles of nitrogen are required to produce 9.58 mol of ammonia?
Answer:
3.193 mol
Explanation:
The reaction is
[tex]N_2+3H_2\rightarrow 2NH_3[/tex]
We use the stoichiometry in order to find the moles of nitrogen required.
[tex]9.58\ \text{mol of }NH_3\times \dfrac{1\ \text{mol of }N_2}{2\ \text{mol of }NH_3}[/tex]
[tex]=3.193\ \text{mol of }N_1[/tex]
The amount of nitrogen required is 3.193 mol to produce 9.58 mol of ammonia.
thw table below provides data the length of day for different planets in the solar system
The day length of each planet corresponds to the amount of time it takes to complete which type of motion?
a one rotation of the planet on its as
b one reversal of magnetic poles of the planet
c one revolution of the planet around the Sun
d one orbit of the largest moon of the planet
Answer:
a one rotation of the planet on its axis
Explanation:
The two types of motion that planets undergo are;
1) rotation of the planet about its axis
2) revolution of the planet around the sun.
In every planet there are days as shown in the image attached to the question. However, the length of day in each planet is determined by the time required for the planet to complete one rotation on its axis.
It takes the earth 1 earth day (24 hours) to complete rotation on its axis.
How many molecules are in 100 g of C6H120,?*
Answer:
3.37 × 10²³ molecules
Explanation:
Given data:
Mass of C₆H₁₂O₆ = 100 g
Number of molecules = ?
Solution:
Number of moles of C₆H₁₂O₆:
Number of moles = mass/molar mass
Number of moles = 100 g/ 180.16 g/mol
Number of moles = 0.56 mol
Number of molecules:
1 mole contain 6.022 × 10²³ molecules
0.56 mol × 6.022 × 10²³ molecules /1 mol
3.37 × 10²³ molecules
If 6 grams of a hydrocarbon gas have a volume of
4.8 cubic decimeter, what would be the
approximate molecular mass of this gas?
A 30 grams
B 40 grams
C 20 grams
D 48 grams
Answer:
30 grams
Explanation:
I got 40 wrong so I picked 30
Answer:
30 grams
Explanation:
I did the ck12
PLEASE just help me!!! Its my last question!!!!
If you add a light bulb to the circuit, the filament in the bulb will resist the flow of electrons and convert energy into_____ and ______.
Question 2 options:
light and heat
energy and matter
electrons and neutrons
electrons and protons
Answer:
Light and heat
ur welcomeeeeeeee
Answer:
Light and Heat
Give the other guy brainiest
Explanation:
Thx for the point though
can someone answer pls