What type of testing can reveal the precense of blood?
Answer: precipitin test
Explanation:
What is the name of the formula compound made of sodium and chlorine
Answer:
NaCl
Sodium chloride
Explanation:
What captured energy from the sun? It produced oxygen as a
by product? *
Outgassing
O Photosynthesis
O Greenhouse Effect
O Global Warming
Skill and
Serina is a ballet dancer. During her dance, she dances in a "Z" pattern on the stage. It takes her about 30 seconds to
complete the ®Z." The top and bottom of the "Z" are equal distances of about 3 meters each. The middle part of the "Z"
is about 6 meters long. How quickly (in meters per second) is she traveling during this part of the dance?
Answer:
2.5 m/s
Explanation:
total of 12 meters in 30 seconds
12x2.5=30
Which bond does this picture best represent?
A.Metallic bond
B.Ionic bond
C.Covalent bond
D.Cuteness overload
bond
Answer:
C is the answer they are looking for but clearly the truth is D
Explanation:
What would be the product or products of the reaction of LEAD OXIDE with NITRIC ACID
I hope it helps you ❤️❤️❤️
Answer:
lead oxide =PbO
Nitric acid =HNO3
Pbo+2HNO3=Pb(No3)2+H2O
hope it is right answer for it!!
Choose whether each statement is a scientific hypothesis, theory, or law. The pressure a gas exerts on a container increases as the temperature increases because the particles in the warmer gas move faster and collide with the walls of the container with more force.
Answer:
1) theory
2) law
3) hypothesis
Explanation:
edge 2021
A scientific hypothesis is a proposition that can be determined by experiments. If the gas container is heated, then the pressure inside will increase as shown by the hypothesis.
What is a scientific theory?A scientific theory is a statement that has been tested by a thorough experiment and by following the experimental procedure to evaluate the results. The increase in temperature increases pressure because particle moves rapidly shown in theory.
A scientific law is a statement that is proven true by repeated experiments. As the temperature of the gas increases the pressure also increases showing the law of the ideal gas equation.
Therefore, scientific theory, law, and hypothesis are different.
Learn more about scientific hypothesis here:
https://brainly.com/question/14074757
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D
Learning Task : Read the statement below, draw THUMBS UP ($) if you agree
with the statement and THUMBS DOWN ( P )if not. Explain the reason for your
answer. Do this activity in your answer sheet.
1. Mom and Dad provide my basic needs.
2. Security is the priority of my parents.
3. Parents give love and care to their children.
4. We live under the bridge because our parents are jobless.
5. I get what I want from my parents.
Answer:
1. Mom and Dad provide my basic needs.($)
2. Security is the priority of my parents.($)
3. Parents give love and care to their children.($)
4. We live under the bridge because our parents are jobless.(P)
5. I get what I want from my parents.($)
Explanation:
Yes, Mom and Dad provide my basic needs and provides everything which I need in my life. They provide security and love to their children. They do everything for our happiness and success. They sacrifices their dreams for their children and work day and night to give a good life to their children so parents are the blessing of God and we should respect and take care in their older age.
If I drives 45 meters to school in 87.6 seconds what is my velocity
Use for questions 1-4
Zn + 2HCl → ZnCl2 + H2
1) If 0.8 moles of Zn are used,
how many moles of HCl are
required?
2) If 3.5 moles of Zn are used,
how many moles of HCl are
required?
3) If 4.8 moles of HCl are used,
how many moles of H, are
produced?
4) If 0.48 moles of ZnCl, are
produced, how many moles of
HCl are needed?
Answer: 1) 1.6 moles of HCl
2) 7.0 moles of HCl
3) 2.4 moles of hydrogen
4) 0.96 moles of HCl
Explanation:
The balanced chemical equation is:
[tex]Zn+2HCl\rightarrow ZnCl_2+H_2[/tex]
According to stoichiometry :
1 mole of [tex]Zn[/tex] require = 2 moles of [tex]HCl[/tex]
0.8 moles of [tex]Zn[/tex] will require=[tex]\frac{2}{1}\times 0.8=1.6moles[/tex] of [tex]HCl[/tex]
3.5 moles of [tex]Zn[/tex] will require=[tex]\frac{2}{1}\times 3.5=7.0moles[/tex] of [tex]HCl[/tex]
According to stoichiometry :
2 moles of [tex]HCl[/tex] produce = 1 mole of [tex]H_2[/tex]
4.8 moles of [tex]HCl[/tex] will require=[tex]\frac{1}{2}\times 4.8=2.4moles[/tex] of [tex]H_2[/tex]
According to stoichiometry :
1 mole of [tex]ZnCl_2[/tex] are produced by = 2 moles of [tex]HCl[/tex]
0.48 moles of [tex]ZnCl_2[/tex] are produced by =[tex]\frac{2}{1}\times 0.48=0.96moles[/tex] of [tex]HCl[/tex]
PCI7 Compound name....
Explanation:
Phosphorus heptachloride
In which part of a plant cell does photosynthesis occur?
Answer:
leaves,Hope it helps....⋋✿ ⁰ o ⁰ ✿⋌(・o・)
What’s the difference between directly
proportional and inversely proportional.
Answer:
Directly proportional:
A proportion of two variable quantities. when the ratio of two quantities are constant.
inversely proportional:
when one value decreases at the same rate that the other increases.
Explanation:
I hope this does help you, have a great day. :)
Question 3 of 10
What is thermodynamics?
O A. The study of the transfer of hot and cold energy
B. The study of the movement of energy and heat
C. The study of kinetic energy and potential energy
D. The study of the conservation of matter and energy
Answer:
B
Explanation:
the branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, of the relationships between all forms of energy.
Answer:
B
Explanation:
A gas at 1.5 atm had pits ressure decreased to 0.50 atm producing a new volume of 750 ml what was its original volume
Answer:
The original volume of the gas is 0.001 mL
Explanation:
This easy excersise can be solved by the law for gases, about pressure and volume; the volume of a gas is inversely proportional to the pressure it exerts.
We can propose the rule by this formula:
P₁ / V₁ = P₂ / V₂
We replace data given: 1.50 atm / V₁ = 0.50 atm / 750 mL
As the rule says, that volume is inversely proportional, and the pressure was decreased, volume must be lower than 750 mL.
1.5atm / (0.5 atm / 750mL) = V₁
V₁ = 0.001 mL
in the reaction :N2 + 3H2----2NH3 how many grams of H2 are needed to produce 1 mole on ammonia
The number of grams that are needed to produce 1 mole on ammonia is to be considered as the 1.52 g Hz.
Calculation of the number of grams:Here we begins the moles of ammonia for production after this it convert the number of moles of h2 for getting one mole of ammonia and then finally convert into grams
So it be like
[tex]= 1\ mol NH_3 \frac{3H_2}{2NH_3}\frac{1.01g }{1\ mol H_2}[/tex]
= 1.52 g Hz
Hence, The number of grams that are needed to produce 1 mole on ammonia is to be considered as the 1.52 g Hz.
Learn more about grams here: https://brainly.com/question/10822689
When phosphorus forms ions, they have a charge of
Explanation:
When phosphorus forms ions, they have a charge of 4+
Hope it helps you
...
An automobile tire at 23°C with an internal volume of 25.1 L is filled with air to a total pressure of 3.05 atm. Determine the number of moles of air in the tire.
1. Calculate the percent oxygen in H2SO4.
HELP!!!!! I KNOW YALL CAN HELP ...ASAP
Answer:
The molecules in a solid are very close together and move very slowly. As the mixture was shaken in the ice, the cold slowed the molecules down, and they moved closer together. The liquid turned into a solid.
Explanation:
Good luck :)
Help pls, it's a test about fossils?
Looking at the diagram below, how it is known that the environment changed over time?
A. They are all predators.
B. The organisms gradually become herbivores.
C. At some point, the land was covered in water.
D. The organism gradually become simpler beings.
Answer:
C. At some point, the land was covered in water.
Explanation:
In the diagram it shows the different fossil layers. In the bottom layers there are shells, but as you go up the fossils start changing. This shows that there used to be water there, but now it is land.
Name ways we use technology in inner and outer space
8th grade science btw
Answer:
Explanation:
Many common everyday services such as weather forecasting, remote sensing, satellite navigation systems, satellite television, and some long-distance communications systems critically rely on space infrastructure. ... Of the sciences, astronomy and Earth science benefit from space technology am in 6th grade btw
why aren't granite, copper, or petroleum found everywhere on earths surface
Answer: The distribution of natural resources depends upon many physical factors like land, climate and altitude. The distribution of resources is unequal because these factors differ from place to place on this earth.
Many physical factors, such as land, climate, and altitude, influence the distribution of natural resources. Because these factors differ from place to place on this planet, the distribution of resources is unequal.
What is earth surface ?The Earth's surface is defined as the part of the water or land that comes into contact with the air above it. The surface is the part of the Earth with which we interact. The crust is the rock layer that surrounds the Earth's mantle. The crust encircles the entire planet, including the ocean floor.
The crust is the planet's surface, where we live; it's actually a very thin layer, only 70 kilometers thick at its thickest point.
Petroleum is formed by the same geological process that creates sedimentary rock. The geological processes that create rocks and natural resources such as granite and copper do not occur everywhere on Earth and take a long time to form. This explains why granite and copper aren't found everywhere on the planet.
Thus, Because these factors differ from place to place on this planet, the distribution of resources is unequal.
To learn more about the earth's surface, follow the link;
https://brainly.com/question/9382932
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Which organelle makes useable energy for the cell? What type of fuel did your ship need in order to work?
Answer:
Mitochondria -uses glucose!!
Explanation:
The amount of matter in an object is ___ and a common unit is the ___.
A. mass, mL
B. volume, mL
C. volume, gram
D. mass, gram
Answer:
The answer is D
Explanation:
Mass is the amount of matter in an object and gram is the common unit of measurement of mass
Answer this and I will mark brainliest. How did the Intolerable Acts benefit British Citizens?
Answer:
The Intolerable Acts were punitive laws passed by the British Parliament in 1774 after the Boston Tea Party. The laws were meant to punish the Massachusetts colonists for their defiance in the Tea Party protest in reaction to changes in taxation by the British Government.
Explanation:
Answer:
the Intolerable Acts were punitive laws passed by the British Parliament in 1774 after the Boston Tea Party. The laws were meant to punish the Massachusetts colonists for their defiance in the Tea Party protest in reaction to changes in taxation by the British Government.
Explanation:
what happens if i give all my points on my next question?
Answer:
you wont be able to ask any more questions until you answer some bc you get points from answering questions but you loose points when you ask them
Explanation:
Answer:
Good thing:)
The Bermuda Triangle, also known as the Devil's Triangle, is a loosely defined region in the western part of the North Atlantic Ocean where a number of aircraft and ships are said to have disappeared under mysterious circumstances. Most reputable sources dismiss the idea that there is any mystery.Bermuda TriangleDevil's TriangleAt what elevation would there be the highest atmospheric pressure?
Answer:
The highest sea-level pressure on Earth occurs in Siberia
Explanation:
where the Siberian High often attains a sea-level pressure above 1050 mbar (105 kPa; 31 inHg), with record highs close to 1085 mbar (108.5 kPa; 32.0 inHg).
Which statements correctly describe light (Select all that apply)
A. Light travels in a straight line
B. Light behaves in a predictable way
C.Light can be reflected or refracted
D.Light Curves around corners or obstructions
Answer:
The correct answers are C and D.
Which statement about plants is the most accurate?
Group of answer choices
(A) Plants undergo both photosynthesis and cellular respiration
(B) Plants undergo neither photosynthesis nor cellular respiration.
(C) Plants undergo photosynthesis but not cellular respiration.
(D) Plants undergo cellular respiration but not photosynthesis.
I'll give you Brainliest.