Answers
Answer:
450 kilometers
Explanation:
i used a calculator
Answer:
450 km
Explanation:
I) Construct an equation to find the distance:
speed x time = distance
15 x 30 = d
II) Solve:
15 x 30 = 450
450 km
Related Questions
Alkaline solutions have pH values below 7.
true or false ?
Answers
Answer:
It is false
Explanation:
ph value below 7 are acidic, and ph values above 7 are alkaline (basic)
What state does a maple tree enter during the winter?
A. thigmotropism
B. migration
C. hydrotropism
D. dormancy
Answers
How many grams of gasoline were
burned if 1.63 x 1023 molecules of
water were produced? Only report
number (no units) and use correct sig
figs.
Answers
Answer:
31.0 g C8H18
Explanation:
Gasoline is equivalent to C8H18
to convert molecule to gram you have to convert molecules to mols first.
Using Avocado's number we can figure that out.
(1.63 x 10²³ molecules C8H18) (1 mol C8H18/ 6.022 x 10²³) = 0.271 mols C8H18
Then we convert mols to grams using the molar mass of C8H18
C - 8(12.011) = 96.088 g/mol
H - 18(1.008) = 18.144 g/mol
add that together: 114.232 g/mol
(0.271 mol C8H18) (114.232 g/ 1 mol C8H18) = 31.0 g
31.0 g C8H18
P.S: SORRY IF THIS DOESNT HELP!! I dont know if they are talking about the actual formula for gasoline.
Chemical bonds release energy when they break apart, and take in energy when they form. How does this observation help explain the energy released by burning wood?
Answers
Give the number of protons, electrons and neutrons in one atom of Carbon.
Answers
Answer:
6 protons, 6 neutrons, and 6 electrons.
Explanation:
Carbon has six protons
Carbon has six elections
Hope that helped :D
Determine the block of the element Iron which has 26 atomic number:
Answers
Answer:
ok
Explanation:
Answer:
Iron
Explanation:
Which substance do plants use to capture light energy from the sun? a) Carbon dioxide b) Chlorophyll c) Glucose d) Oxygen
Answers
Answer: chlorophyll
Explanation:
The substance that plants use to capture light energy from the sun is referred to as chlorophyll.
The chlorophyll is a colored pigment that is used by the plants for photosynthesis. The function of the chlorophyll is that it absorbs the energy from the sun which is then turned into a chemical energy.
Answer:
I don't know the answer to this either
Explanation:
sorry:(
How does skin defend the body against pathogens?
A. It destroys pathogens with digestive acids.
B. It produces white blood cells that attack pathogens.
C. It blocks pathogens from getting inside the body.
D. It uses tiny hairs to trap pathogens.
Answers
How does the temperature of the air cause a breeze to blow toward the land?
Answers
Answer:
The warm air over the land will rise throughout the day, causing low pressure at the surface. Over the water, high surface pressure will form because of the colder air. ... The wind will blow from the higher pressure over the water to lower pressure over the land causing the sea breeze.
Explanation:
PLZ MARK AS BRAINLEST!!!HELP PLEASE
When ice changes into water, it is an example of a ___________ change. Also, when water changes into water vapor, it is an example of a _________ change.
A. physical...physical
B. chemical...chemical
C. physical...chemical
D. chemical...physical
Answers
Water can dissolve many other molecules.
Question 2 options:
True
False
Answers
Answer:
true
Explanation:
took the test
Help ASAP I will mark brainliest for the correct answer !!!⚡️✨
Answers
Answer:
10623 km
Explanation:
3541 x 3 hours
How do most diamonds get their color?
Answers
Answer:Most naturally-coloured diamonds are created when trace elements interact with the carbon atoms during the diamond's creation. The presence of chemical elements such as nitrogen, sulphur, and boron can colour diamonds in shades of yellow, green, and blue. ... Trace elements have never been found in pink diamonds.
in other words it depends on the heat of how it is made
What is the name of the following ionic compound?
AlF3
ASAP QUICCKKKM
Look at picture
Answers
Aluminum fluoride is the name of the following ionic compound. The recognised authority on chemical terminology and nomenclature is IUPAC.
IUPAC is the widely acknowledged authority on chemical terminology and nomenclature, and two IUPAC organisations play key roles in this activity: The Interdivisional Commission on Terminology, Nomenclature, as well as Symbols and Division VIII - Chemical Nomenclature or Structure Representation. Unambiguous, uniform, and reliable nomenclature as well as terminology for particular scientific fields are developed by IUPAC as one of its main activities. These recommendations are typically presented as glossaries of terms for particular chemical disciplines. Aluminum fluoride is the name of the following ionic compound.
To know more about IUPAC, here:
https://brainly.com/question/16631447
#SPJ6
PLEASE HELP ASAP IT URGENT!!!!!!!!
Answers
Answer: IT IS D
Explanation:
Pb(NO3)2
how do i solve this
Answers
You can see the periodic table one by one.
Pb(NO3)2 = PbN2O6
So there are
1Pb
2N
6O
and so you find the molecular mass from the periodic table and add all the numbers
Molacular mass of
Pb = 207
N = 14
O = 16
multiply it with the number of atoms
1Pb = 207 × 1 = 207
2N = 14 × 2 = 28
6O = 16 × 6 = 96
Molecular mass total = 207 + 28 + 96 = 331
So the molecular mass is 331.
Describe the pattern of the Lewis dot structures of the first 18 elements (include periods and groups/families)?
Answers
Answer:
The Lewis dot structures of elements in the same group are the same (except that the name of the element is shown in the structure) while for elements in the same period it increases by one from left to right.
Explanation:
Lewis dot structures are the structures which represent the valence electrons of an atom. The dots in the structure represent electrons in the valence shell of the atom.
Elements in the periodic table are arranged into groups and periods. The groups are the vertical columns whereas the periods are the horizontal rows. The first 18 elements of the periodic table are Hydrogen(H), Helium (He), Lithium (Li), Beryllium (Be), Boron (B), Carbon (C), Nitrogen (N), Oxygen (O), Fluorine (F), Neon(Ne), Sodium (Na), Magnesium (Mg), Aluminum (Al), Silicon (Si), Phosphorous (P), Sulfur (S), Chlorine (Cl) and Argon (Ar). They are found within Groups IA to VIIIA, as well as from period 1 to 3 in the periodic table. elements in group IA have one valence electron; elements in group IIA has two, IIIA has three, IVA has four, VA has five, VIIA has six, VIIA has seven, while VIIIA has eight valence electrons.
Elements in the same group have the same number of valence electrons while the valence electrons of elements in the same period increase by one from left to right. Therefore, the Lewis dot structures of elements in the same group are the same (except that the name of the element is shown in the structure) while for elements in the same period it increases by one from left to right.
The Lewis dot structure of the first 18 elements is shown in the attachment below.
how many moles of manganese are in 1 mole of manganese(iv) permanganate
Answers
Answer:
4 moles...................
1. Calculate the elevated boiling point of a solution containing 10.0g of sodium chloride
dissolved in 200g of water.
Answers
Answer:
100.44 oC (0.438 oC increase in BP)
Explanation:
What is the equation and molecular weight of Scandium (II) Sulfite? Not sulfide
Answers
Explanation:
Molecular Formula
S3Sc2
Synonyms
Scandium sulfide
Scandium sulfide (Sc2S3)
Discandium trisulphide
Molecular Weight
186.1 g/mol
Helpppppppp I will mark brainliest
Answers
Answer:
9.8 m/s squared
Explanation:
On a 310 K day, soda is being carbonated in a factory.
a. A 0.031 m
pressure device receives a measurement of 9900 N from the gases in
the soda bottle. What is the pressure of the gases in the soda bottle?
b. Since soda contains water, 47.1 mm Hg of the pressure in the bottle is from water
vapor. What is the pressure of the Co2 in the bottle?
c. Before the CO2 is added to the soda, it's stored in a 1849 L container at 50 atm
and 310 K.
i. How many moles of CO, can fit in the container?
ii. Unfortunately, an accident (blame Steve), dents the container, reducing its
volume to 1399 L. If the number of moles and temperature are still
constant, what is the new pressure?
iii. The factory repairs the container so it's back to its original conditions.
However, the container is weakened, so if the pressure reaches 75 atm it
will burst. If the number of moles and volume are constant, at what
temperature does this burst happen?
Answers
In a sample of double-stranded DNA, 12% of the nitrogenous bases are guanine (G). What percentage of the nitrogenous bases in the sample are cytosine
Answers
Answer:
12%
Explanation:
The percentage of Guanine and Cytosine in DNA are equal to each other, as one molecule of guanine bonds with one molecule of cytosine.
If 12% of the nitrogenous bases are guanine, then another 12% will be Cytosine.Conversely, the percentage of adenine and thymine in DNA are equal to each other.
The whole reason things stay afloat or sink is because water is
Answers
Answer:
I think the density of the object determines if it floats or sinks
In experiment B, the iron filings weighed 2.0 g at the beginning of the experiment and the iron sulfide produced weighed 2.8 g. Explain this increase in mass
Answers
Answer:
The increase in mass is because the iron fillings have combined with a sulfide to produce iron sulfide and so the mass will increase.
In such a reaction like this, the mass of the reactants must be conserved. By so doing, the mass of reactants and products must be the same.
When two substances combine together, their masses added up to that of the individual masses. This helps to conserve the mass.
Explanation:
The increase in mass is because the iron fillings have combined with a sulfide to produce iron sulfide and so the mass will increase.
In such a reaction like this, the mass of the reactants must be conserved. By so doing, the mass of reactants and products must be the same.
When two substances combine together, their masses added up to that of the individual masses. This helps to conserve the mass.
What happens to the air as a stove heats it? This question is about thermal expansion and convection, not “it gets hot”.
20 points for answering
Answers
Answer:
When there is heat at the bottom of this air or water, the air or water molecules in contact with the heat start to move, and the molecules spread apart. The heated air or water becomes less dense. It rises up until it gets to air or water with the same density as it has, and when it gets there, it pushes the air or water that was there out of the way. At the same time, new air or water fills the space that was vacated when the heated molecules rose up. The air or water that gets pushed out of the way falls down. This sets up a circular motion. Air or water is heated at the bottom, travels to the top, cools, gets denser, falls, is heated again and the whole cycle starts again. Convection does not occur in space because there is no gravity. Ovens work by convection. The heating coils at the bottom of the oven heat the air which climbs to the top, cools slightly, and falls down again.
Explanation:
How to study for a chemistry exam?
Answers
Answer:
post it notes ,snacks , or any think that u love to do or eat when u get it right u can eat it
i don’t know:(
please help!
Answers
Answer:
its b , Symmetrical and nonpolar
Explanation:
Its c
Answer:
Explanation:
What is the mass of 3.2×10²³ molecules of CH4?
Answers
Answer:
Mass? Molar mass? Grams? Or Mols?
RIGHT ANSWERS ONLY !!!
Answers
Answer:
450.0
Explanation:
Answer:
16km
sorry if it is wrong they change things up a lot
Explanation: