Answer:
D
Explanation:
Because do all of that and then you do a conclusion
2 horizontal and parallel lines are intersected by 2 diagonal lines to form a triangle with exterior angles. The top angle of the triangle is 47 degrees. The exterior angle created by the right side of the triangle and the top horizontal line is x degrees. The bottom left angle of the triangle is y degrees. The exterior angle of the bottom right angle is z degrees above the horizontal line and 63 degrees below. Which statements about the diagram are true? Select three options. x = 63 y = 47 z = 117 x + y = 180 x + z = 180
Answer:
x = 63
z = 117
x + z = 180
Explanation:
edg 2020
Answer:
Explanation:
c
The acceleration of a moving object can be calculated by dividing the change in velocity by the change in blank
Answer:
The acceleration of a moving object can be calculated by dividing the change in velocity by the change in TIME
Explanation:
Took the practice
Which of the following substances would have a fixed shape and volume at room temperature?
Group of answer choices
aluminum (solid)
rubbing alcohol (liquid)
lemonade (liquid)
helium (gas)
Answer:
aluminum (solid)
Explanation:
Solids have fixed shape and volume at room temperature.
Matter is defined as any substance that has weight and occupies space. There are three main classes of matter;
SolidLiquidGasSolids are particles have strong attractive force between them. This confers a fixed shape and volume on them.
Liquids are mostly fluids that takes up the shape of containers they occupy. The have intermediate strength of attractive forces.
Gases have weak forces and do not have fixed shape or volume. They take up the shape of any container they are introduced into.
help me with example 2 please
Answer:
you need to calculate it by percentage
Answer:
mass = 20g
volume = 80ml =0.08 dm³
[tex]p = \frac{mass}{volume} [/tex]
[tex]p = \frac{20g}{0.08 \:dm ^{3} } \\ p = 250gdm {}^{ - 3} [/tex]
The process shown in the image above is known as
A. neutron absorption.
B. nuclear fusion.
C. a chain reaction.
D. a redox reaction.
Answer:
C. Chain Reaction
Explanation:
You get different elements from just one by a single reaction.
A ____ is a region of strong magnetic activity on the photosphere the Sun.
(A) sunspot
(B) flare
(C) Coronal mass ejection
(D) Solar wind
The ________variable is the one the experimenter has chosen to investigate
dependent
control
experimental
independent
You would like to find the density of an unusually shaped piece of jewelry. Since the piece of jewelry has an irregular shape, you need to use displacement to calculate the volume. In a 300 ml beaker you pour 200 ml. Of water. When you place the piece of jewelry in the beaker, the water level rises to 278 ml. Upon placing the object on the triple beam balance, you find that it weighs 122 grams. Given this information, calculate the density. SHOW YOUR WORK
Volume displaced by jewelry, V = 278 - 200 = 78 ml
Also, 1 ml = 1 cm³
We know, by water displacement method the volume of water displaced by an object it equals to its own volume.
So, volume of jewelry, V = 78 ml = 78 cm³.
Also, weight of jewelry is , w = 122 gm.
Now, we know density is given by :
[tex]d=\dfrac{w}{V}\\\\d=\dfrac{122\ gm}{78\ cm^3}\\\\d=1.56\ gm/ cm^3[/tex]
Hence, this is the required solution.
how many nuetrons are in chlorine 37?
Answer:
18
Explanation:
An element with 17 protons will always be chlorine. However an element's mass numbers can vary, which means that it can have different numbers of neutrons. So although chlorine has a mass number of 35 which means it has 18 neutrons.
Which sentence describes a characteristic of matter
Answer: Matter takes up space and has mass
Explanation:
Literally the definition of mass
if we are made of stardust, does that make you feel more or less important as an individual (or just the same), and why?
Which property is a chemical property of a substance?
color
melting point
reactivity
boiling point
Answer:
Reactivity! :)
Explanation:
I just took the test! "2.13 Physical and Chemical Changes"
Reactivity is the chemical property of the substance. Therefore, option (C) is correct.
What are the chemical properties?A chemical property can be described as the property that causes a change in the chemical structure of the substance. A chemical property of a substance can be seen in chemical change or reaction in the substance.
A chemical property represents the ability of a substance to combine with other substances or convert into a different product. The chemical composition is the identity of the substance and on changing it the substance turns into a different substance.
A chemical property gets determined when a change occurs in the chemical identity of the substance. The chemical properties such as toxicity, reactivity, enthalpy of formation, the heat of combustion, oxidation states, radioactivity, etc.
The color, melting point, and boiling point are the physical properties of a substance while reactivity is the chemical property.
Learn more about Chemical properties, here:
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In which way are sugars usually transported throughout a pine tree?
Answer:
through the tree's fibers
Explanation:
the tree's leaves produce sugar that is transported through the tree's fibers. Sap also contributes means of transportation for these sugars.
What challenges do scientists face in studying the Sun?
The challenges do scientists face in studying the sun is that due to high amount of heat, it is impossible to see sun.
What is sun?Sun is a ball of hydrogen and helium gases which may produce large amount of heat as a result of nuclear fusion reaction.
High amount of heat is produced in the sun so it is not possible to see the sun from the normal eyes. Scientist uses telescope with mant filters to see a clear picture of the sun. Scientists are also not able to go near to the sun as produced heat is that much of power as they burn any object.
Hence above challenges are scientist face.
To know more about sun, visit the below link:
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Based on your knowledge of chemical equations, what do you know for sure
about this equation?
Pls help I need it I’m dumb but I do need it! *here a pic*
Mercury, the only metal that is liquid at room temperature, has a density of 13.6g/cm^3. How much does 25cm^3 of mercury weigh?
Answer:
The mercury with volume of 25 cm³ having weight of 340 g.
Explanation:
Given data:
Density of mercury = 13.6 g/cm³
Volume of mercury = 25 cm³
Mass of mercury = ?
Solution:
We will apply density formula.
d = m/v
13.6 g/cm³ = m/ 25 cm³
m = 13.6 g/cm³ × 25 cm³
m = 340 g
The mercury with volume of 25 cm³ having weight of 340 g.
What are atoms made up of
They're made up of three main parts: protons, neutrons and electrons. Think of the protons and neutrons as together forming a “sun”, or nucleus, at the centre of the system. The electrons orbit this nucleus, like planets. If atoms are impossibly small, these subatomic particles are even more so.
how many different elements are there in the molecule C8H11NO2?
a. 21
b. 2
c. 4
d.11
Answer:
4
Explanation:
which element has a grater atomic radius ?phosphorus or bismuth?
According to periodic trends, bismuth has the greatest atomic radius.
ents in any compound
fixed ratios
2) Glucose is a 6-carbon sugar made by autotrophs in the process of
photosynthesis. It is a compound formed from three elements, carbon,
hydrogen, and oxygen. The ratio of hydrogen to carbon and oxygen in
glucose is always 2.1.1. What is the correct molecular formula for
glucose?
A) CHO
B) CH1 2012
9 CGH12O6
D) CH₂O₃
in the universe what can mass be defined as
Answer: Mass is both a property of a physical body and a measure of its resistance to ... Inertial mass is the mass of an object measured by its resistance to acceleration. ... back to the fact that we have not really defined what a force is. ... Then we can measure the mass of any other object in the universe ...
different forms of genes for a single trait
Answer:
different forms of genes for a single trait
Explanation:
There are three main forms of genes that can exist for a single trait and they are:
Dominant alleleRecessive alleleCo-dominant allelesWhat are the different forms of genes for a single traitA dominant allele is a stronger version of a gene that shows up when at least one copy of it is present in an organism's genetic makeup. It hides the effects of the weaker gene. In a person with two different alleles, the one that is more powerful decides how the person looks or behaves.
Recessive allele: A recessive allele is only expressed when there are two of the same recessive alleles present. It is hidden by a strong gene. The recessive allele can only be seen when a person has two copies of it.
Co-dominant alleles: When co-dominant alleles are together, both are shown. In this situation, neither gene is stronger than the other, and both play a role in what an organism looks like. One example of co-dominance is the ABO blood type system. In this system, both the A and B alleles are of equal importance.
Read more about genes here:
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PHOTO ABOVE
Answer Choices:
-Sp
-Sp2
-Sp3
-Sp4
I don’t get this!
Answer:
By just counting sigma bond and lone pair in central atom , one can easily find hybridization.
CO2 sp
SO2 sp2
NH3 sp3
BCl3 sp2
3. A sample of tin has a volume of 9.0 cm. What is the mass of this sample?
The mass = 65.79 g
Further explanationDensity 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
To find its mass, we can search the density of tin on the web
the density of tin : 7.31 g/cc
cc=ml=cm³
So the mass :
[tex]\tt mass=\rho\times V\\\\mass=7.31\times 9\\\\mass=65.79~g[/tex]
help me please, i have 20 auestions
Answer:
B
Explanation:
PE=m*delta(h)*g
So 0.75*1.5*9.8 equals PE
=11.025 so round up
1.C3H8 + O2 --> H2O + CO2
(5 Points)
Balanced
O Unbalanced
Answer:
Unbalanced
Explanation:
The balanced equation would be:
C3H8 + 5 O2 ---> 4 H2O + 3 CO2
I have a rock with the mass of 4.8 and a volume of 2.3.
What is the Density?
Theres no select the answer, i have to type it, and i have no clue. 18 points, brainliest if you can tell me three things along with the density of the rock: 3 more answers of density that are close to the real answer.
+Brainliest, Friend request, 18 points, thanks, and 5 star rating!
Answer:
Density = 2.08695652174
Explanation:
Density = Mass ÷ Volume
Which measurement has the greatest number of significant figures?
a
60.6 mg
b
60,600 mg
c
6.060 mg
d
606 mg
Answer:
Option B = 60,600 mg (correct option)
Explanation:
First of all we will have an idea which numbers are consider as significant.
1 = All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.
2= Leading zeros are not consider as a significant figures. e.g. 0.02 in this number only one significant figure present which is 2.
3= Zero between the non zero digits are consider significant like 105 consist of three significant figures.
4= The zeros at the right side e.g 3400 are also significant. There are four significant figures are present.
In given options, Option A 60.6 mg have 3 significant figures.
Option B have 5 significant figures.
Option C have 4 significant figures.
Option D have 3 significant figures.
Thus option b is correct option which have more significant figures.
Which atoms have an outer level of electrons that is one electron short of being full? Explain in a paragraph.
Explanation:
Sorry I tried but I do not know the answer but maybe someone else's know and can tell you the answer
This gas is found in the stratosphere where it helps protect us from UV radiation.
A) ozone.
B) oxygen.
C) nitrogen.
D) carbon dioxide.
Answer:
A.Ozone
Explanation: