Answer:
A normal resting heart rate for adults ranges from 60 to 100 beats per minute.
7. the answer is not D
Answer:
B
Explanation:
The others are written in the correct format and the question is asking which is not written in the correct format.
A.Which non-metal is essential for our life and all living beings inhale it during breathing?
B.Whichnon-metal is used to disinfect water?
2.A purple coloured non-metal forms a brown solution in alcohol which is applied on wounds as an antiseptic. Name the non-metal.
Give reasons for the following.
(a)Aluminium foils are used to wrap food items.
(b)Immersion rods for heating liquids are made up of metallic substances.
(c)Sodium and potassium are stored in kerosene.
4. What is the nature (acidic or basic )of the following oxides ?a.Magnesium oxide (b) Sulphur dioxideGive reason foryour choice.
5. When a copper metal is exposed to moist air for a long time,then a green coating is formed on its surface .What is the green material formed on its surface. Support your answer with word equation.Is it acidic or basic in nature.
PLEASE HELP ME !!!!
Answer:
A. oxygen
B. chlorine
2. iodine
(a) because aluminium is a soft malleable metal. it can be made to in sheets to form thin wrapping sheets. also, it does not react with food items.
(b) because metals are good conductors of heat and electricity. the immersion rod needs electric supply to get heated and to heat liquids.
(c) they're kept in kerosene to keep them from coming in contact with oxygen and moisture as they react to form their hydroxides.
4. Magnesium is a metal. Metals react with oxygen to form metallic oxides. So Magnesium oxides are basic in nature. But nonmetals react with oxygen to form nonmetallic oxides. These oxides differ from metallic oxides because they are acidic in nature. Nonmetallic oxides react with water to form acids. Therefore, Sulphur dioxide is acidic in nature. Magnesium oxide is basic in nature.
5. Copper forms a green deposit on its surface when exposed to air which is usually a mixture of copper carbonate and copper hydroxide. It's acidic in nature.
Answer:
2.A
Explanation:
magnesium reacts with oxygen and forms magnesium oxide , for example
Answer: When the magnesium metal burns it reacts with oxygen found in the air to form Magnesium Oxide, which is a compound. ... After it burns, it forms a white powder of the magnesium oxide. Magnesium gives up two electrons to oxygen atoms to form this powdery product. This is an exothermic reaction.
Which of the following groups can contain mutlicellular organisms?
Archea
Protists
Animals
Bacteria
Answer:
among us
Explanation:
HOW FAST CAN YOU ANSWER {NEW}}}}}}
if i’m thinking correctly it should be D
Answer numbers 1-8
(Don't answer if you don't know)
[PICTURE ATTACHED] HEELPP
please answer all you can you don't need to answer 6
12. Curling is a sport in which players push large stones across smooth ice. Three curling stones that
have the same mass were sliding across the ice. They were each pushed by a player, but not all from
the same direction. Each curling stone changed speed as a result of being hit. Use the information in
the diagram to answer.
Which curling stone(s) experienced the strongest force when hit? How do you know?
Answer:
=1200N
Explanation:
i took the test on edu
Answer:
The yellow and orange curling stones experienced the same strength force because they both gained force, but the blue curling stone lost force.
Explanation:
The yellow and orange curling stones experienced the same strength force because they both gained force, but the blue curling stone lost force.
How do the circulatory, respiratory or digestive system, and how they work together.
Please answer in two paragraphs.
Carbon fixation occurs during the light reactions.
Please select the best answer from the choices provided
T
F
Answer:
True
Explanation:
Carbon fixation is the process by which inorganic carbon is added to an organic molecule. Carbon fixation occurs during the light independent reaction of photosynthesis and is the first step in the C3 or Calvin Cycle.
Answer:
False
Explanation:
What is the structure labeled with an arrow?
A. Cytoplasm
B. Nucleus
C. Cell wall
D. Flagellum
In the given diagram, the structure labeled with an arrow is the nucleus. Therefore, option (B) is correct.
What is the nucleus of a cell?The nucleus is the most integral component of the cell. A nucleus can be defined as a double-membraned eukaryotic cell organelle that consists of genetic material.
The nucleus is typically the most evident organelle in the cell. The nucleus is entirely bound by membranes and is surrounded by the nuclear envelope.
The contents of the nucleus distinguish from the cytoplasm by the membrane. The nucleus contains hereditary information about the cell and controls its growth and reproduction.
The nucleus is not just a storage section for DNA but also occurs to be the home of cellular processes. In the nucleus, DNA can be duplicated and the process is named as named DNA Replication and produce an identical copy of the DNA.
In the diagram, the arrow indicates the nucleus.
Learn more about the nucleus, here:
https://brainly.com/question/4031640
#SPJ2
5 Which of the following scenarios best describes Newton's law of action-reaction?
A A bottle of soda sitting in the console of a vehicle appears to move left as the vehicle makes a sharp right turn.
B A rocket moves upward as the engine pushes downward against exhaust gases and the exhaust gases push upward against the engine.
C A train traveling 88 kilometers per hour takes approximately one kilometer to come to a complete stop.
D An ice skater sharpens the blades of her skate to lessen the effect of friction.
Answer:
c?
Explanation:
b or c im dumb tho so they could be
Party mix is an example of a mixture.
Question 1 options:
True
False
Answer:
false i think plz give me brainliest
Explanation:
Answer:
true
Explanation:
because it has different kids of snacks in it like a fruit bowl it has grapes pineapples apples bananas just different kinds of foods so yes it is true
What is true of a reaction that has reached equilibrium?
The reaction rate is zero.
The reaction rates of the forward and reverse reactions are equal.
The rate of the forward reaction is greater than the rate of the reverse reaction.
The rate of the forward reaction is less than the rate of the reverse reaction.
Explain how this chemical equation H2+Cl2=2HCl shows The Law of Conservation of matter
H2+Cl2=2HCl shows The Law of Conservation of matter
Which statement best describes the weather shown by the blue triangles going one way and the red semicircles going the other way on a line on a weather map?
A stationary front may produce rainy or snowy weather for several days.
A cold front can cause heavy rain, thunder, and lightning.
An occluded front can cause light to heavy precipitation that may last several days.
A warm front brings drizzly weather.
Which Plate Borders the Philippine Plate?
African
Antarctic
Eurasian
North American
7
7
FARNE
PUPPE
PLATE
CARICANTE
PACIFIC
PLATE
COCOS
PURTE
SOUTH AMER
PLATE
AUSTRALIAN
PLATE
NAZCA
PUTE
SCOTA PLATE
AN
Which plate borders the Philippine Plate?
African
Antarctic
Eurasian
North American
Mark this and return
O
DE
UL
Answer:
Eurasian
Explanation:
The Pacific plate is subducting beneath the Philippine Sea plate to the east while the west/northwestern part of the Philippine Sea plate is subducting beneath the continental Eurasian plate.
Which graph can figure out an object's speed? Distance-Time Graph or Speed-Time Graphs?
Answer:
Speed-Time Graphs
Explanation:
You are finding the objects speed not distance so it speed-time graph.
Answer:
speed-time graphs if it's not correct sorry
Hydrogenation of double and triple bonds is an important industrial process. Calculate (in kJ) the standard enthalpy change ΔH for the hydrogenation of ethyne (acetylene) to ethane:
H−C≡C−H(g)+H2→H3C−CH3(g)
Bond enthalpies (in kJ/mol):
C−C (342)
C≡C (818.4)
C−H (403.4)
H−H (433.7)
Answer:
a
Explanation:
j
The standard enthalpy for the hydrogenation of ethyne to ethane is C−C (342).
What is Hydrogenation?Chemical reaction between a substance or element and molecular hydrogen that often occurs with the aid of a catalyst It's possible for the reaction to just involve the addition of hydrogen to a double or triple bond holding two atoms together or for the hydrogen to cause the dissociation (breaking up) of the molecule (called hydrogenolysis, or destructive hydrogenation).
Depending on the catalyst used, typical hydrogenation reactions include the reactions of hydrogen and nitrogen to produce ammonia and hydrogen and carbon monoxide to produce methanol or hydrocarbons.
In the presence of a catalyst, nearly all organic molecules having numerous bonds connecting two atoms can react with hydrogen.
Therefore, The standard enthalpy for the hydrogenation of ethyne to ethane is C−C (342).
To learn more about Hydrogenation, refer to the link:
https://brainly.com/question/28937951
#SPJ6
Please help! I'm trying to catch up on Science and I have 10+ assignments to do plus quizzes!!!
Answer:
Cohesion describes water's attraction to other water molecules
1. A compound is a substance made up of only 1 kind of element.
True
False
2. An element is a substance _______ be broken down or separated into simpler substances
can
cannot
Answer:
1. False
2.cannot
Explanation:
identify the forms of energy being used in the energy transformation.
Answer:
c-m
Explanation:
Answer: Chemical to Mechanical energy
Explanation: The gasoline first has chemical energy, That is then turned into mechanical energy with the car.
The starting position of this object is m. The object is traveling at a velocity of m/s.
Answer:
The starting position of this object is 3 m
The object is traveling at a velocity of 3 m/s
Explanation:
The object's final position after 5 seconds, starting from an initial position of m with a velocity of m/s and constant acceleration of 2 [tex]m/s^2[/tex], is given by s = 5m + 50[tex]s^2[/tex] m.
To find the object's final position after 5 seconds, we can use the following equation of motion:
[tex]\[ s = ut + \frac{1}{2}at^2 \][/tex]
where:
- [tex]\( s \)[/tex] is the final position,
- [tex]\( u \)[/tex] is the initial velocity,
- [tex]\( t \)[/tex] is the time, and
- [tex]\( a \)[/tex] is the acceleration.
Given:
Initial position [tex](\( s_0 \))[/tex] = m
Initial velocity [tex](\( u \))[/tex] = m/s
Acceleration [tex](\( a \)) = 2 m/s\(^2\)[/tex]
Time [tex](\( t \))[/tex] = 5 s
Substituting these values into the equation, we have:
[tex]\[ s = (m/s) \times (5s) + \frac{1}{2} (2 \, \text{m/s}^2) \times (5s)^2 \][/tex]
Simplifying further:
[tex]\[ s = 5m + \frac{1}{2} \times 2 \, \text{m/s}^2 \times 25s^2 \][/tex]
[tex]\[ s = 5m + 2 \, \text{m/s}^2 \times 25s^2 \][/tex]
[tex]\[ s = 5m + 50s^2 \, \text{m} \][/tex]
Therefore, the object's final position after 5 seconds is [tex]\( s = 5m + 50s^2 \, \text{m}\)[/tex].
To learn more about velocity follow the link:
https://brainly.com/question/30559316
#SPJ2
The appropriate question is; the correct question is:
What will be the object's final position after 5 seconds if it starts at an initial position of m and is traveling at a velocity of m/s, subject to a constant acceleration of 2 [tex]m/s^2[/tex], without any significant external forces or constraints affecting its motion?
Mars is known as the ____ planet.
A) Blue
B) Gaseous
C) Red
D) Sandy
Answer:
Of course it's C
Red planet
Explanation:
It is because the soil on Mars is rich of Fe (Iron).
That makes the soil look red.
Even on our planet we have such this places like hormuz island in Iran.
Usable forms of nitrogen can intentionally be increased in the soil by(1 point)
lightning.
planting more trees.
allowing organic matter to decompose.
planting fewer beans.
Usable forms of nitrogen can intentionally be increased in the soil by allowing organic matter to decompose. Therefore, option C is correct.
What is organic matter ?Organic matter is defined as anything that contains carbon compounds formed by living organisms. It includes lawn clippings, leaves, stems, branches, moss, algae, lichens, animal parts, manure, droppings, sewage sludge, sawdust, insects, earthworms, and microbes.
The majority of organic matter in soil comes from plant tissue. Plant residues have a moisture content of 60-90 percent. Carbon (C), oxygen, hydrogen (H), and trace amounts of sulphur (S), nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium make up the remaining dry matter (Mg).
Microorganisms such as bacteria, viruses, fungi, protozoa, and algae are among the living components of soil organic matter. Plant roots, insects, earthworms, and larger animals such as moles, mice, and rabbits are also included.
Thus, option C is correct.
To learn more about an organic matter, follow the link;
https://brainly.com/question/24784186
#SPJ2
Can somebody help me with my Abiotic vs. Biotic Knowledge Check?
Answer:
abiotic and biotic check
Explanation:
Abiotic is something that is not living
Ex:air
Biotic is something that is living
EX :Plants
What is relative mass of an atom
Answer:
Explanation:
The relative atomic mass of an element is a weighted average of the masses of the atoms of the isotopes - because if there is much more of one isotope then that will influence the average mass much more than the less abundant isotope will.
What atoms make up one molecule of water?
A. 2 Hydrogen, 1 oxygen
B. 3 Hydrogen, 1 oxygen
C. 1 Hydrogen, 1 oxygen
Answer:
A
Explanation:
Answer:
A
Explanation:
2 Hydrogen and 1 Oxygene atoms :D
HELP ASAP!! If a liquid substance is transferred to a different container, what can be predicted about the volume of the liquid in the new container? A. This cannot be predicted. B. The volume will decrease. C. The volume will stay the same. D. The volume will increase.
Answer:
C. The volume will stay the same
Answer:
C
Explanation:
The volume stays the same no matter the container its in
