I do not get it hard science it is so hard
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Answer:
A pill is usually absorbed into the blood through the stomach walls after it is swallowed – these can become active in a few minutes but usually take an hour or two to reach the highest concentration in the blood. IV drugs are injected directly into the blood work much faster – sometimes in seconds or minutes.
Related Questions
Earthquakes are caused by a sudden release of stress when pieces of the Earth's crust shift past each other along a fault. Which of the following could be caused by this sudden shift or its associated earthquake? A. the triggering of a landslide B. the collapse of a building C. the initiation of a tsunami D. all of these
Conpare and constrast chemical and physical change give an example of each
State of an atom with same number of proton and electrons
In which situation can a mixture always be called a solution?
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Here we have to point out the necessary character of the substance needed which are used as lightning conductor.
The substance should have the following properties:
High electricity carrying capacity and less resistant.
High melting point
The substance should have high electricity carrying capacity or the resistance is less so that the electricity generated during the lightning easily conducted to the ground
The substance should have high melting point so that during lightning the generated high temperature cannot disrupt the material.
Answer:The lightning rod should be constructed of a metal, which is an inorganic substance.
Metals are good conductors of electricity.
Explanation:
i just got it right
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Final answer:
In liquids, particles keep changing their neighbors while sliding past each other, confined to the shape of the vessel. In gases, particles are free, separated by large distances, and move rapidly in straight lines. Temperature is a measure of the average motion energy of the particles in both liquids and gases.
Explanation:
The movement of particles in liquids and gases is different due to their states of matter. In liquids, particles are held together by attraction, allowing them to slide smoothly past each other and change neighbors, but they remain confined to the shape of the vessel they are in. This is a less energetic state of movement.
On the other hand, in gases, particles are broken free of bonds. They travel in straight lines and are separated by large distances compared to their size, colliding with each other or the walls of the container. They are in a more energetic state and rapidly occupy all the accessible volume, hence gases can expand without limit to fill their containers.
At a microscopic level, the temperature of a liquid or gas is a measure of the average motion energy of the particles making it up - the hotter the liquid or gas, the more rapid the motion of its molecules or atoms.
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Brazil
United States
Japan
Chile
USSR
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Answer:
ussr us france and brazil
Explanation:
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Water in the solid phase (ice) is lighter than the liquid phase. This is an anomaly; in general, other compounds in the solid phase has a density greater than the liquid phase so that it will sink. The implication: If the ice is heavier than water, so we just have sedikiit sea! Thewater in the polar regions of seasonal frozen, but the ice sheets willmelt during the summer, or to shift to a more warm and melted there. If ice were heavier than water, it will sink to the bottom of the ocean and isolated from the hot sun. Thus,most of the ocean would be composed of a layer of ice underneath, just afew meters from the surface which is a layer of water during thesummer. Furthermore, it would be very limiting evaporation and cloud formation, which is a source of fresh water on land.
Water can dissolve the salt and gas but can be easily separated as a pure vapor. The sun's rays evaporate water from the ocean, but the salts remain in the sea. The result: water vapor (clouds) driven wind toward land, thencondenses into rain, which is a source of fresh water on land, then backagain to the sea.
Water easily dissolves CO2 and become effective acid solution. In addition to the atmosphere, the CO2 source is also present in the root zone of the soil. All rock will undergo interaction with acid water is and will be eroded and transported to the sea.
Water that has a low viscosity and not sticky. As a result: (1) to flow as surface water water efficiently. (2) Can penetrate (infiltration) into the ground. (3) Flow through permeable rocks.
Water weighs enough to be moved by the force of gravity. As a result: allowing the flow of groundwater and surface water runoff.
Water has a density that is appropriate. The result: no water vapor out of the Earth.
Water and water vapor through. As a result: sunlight can enter through the air and through tens of meters of depth of the sea and lakes, as energy requirements of life.
Water including greenhouse gases. As a result: maintaining water balance in the Earth's temperature.
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Plants need energy for Reproduction, Photosynthesis, Growth, and Development amongst others.
Required Energy in Plants
To produce their own food energy, which is referred to as "photosynthesis," plants need water and sunlight. They need energy because they are living things.
Photosynthesis is the process by which plants turn solar energy into sugar. Light energy is utilized by photosynthesis to transform carbon dioxide and water.
Numerous biological functions, such as growth and reproduction, require energy. Therefore, energy is absolutely essential.
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Answer: The correct answer is polar, tetrahedral and non-polar.
Explanation:
It is given a compound which is silicon tetrahydride having formula
The electronegativities of silicon and hydrogen are 1.9 and 2.1 respectively.
Difference in electronegativity = 2.1 - 1.9 = 0.2
From above, some difference in the electronegativities of the atoms is there. This means that bond polarity of this molecule is polar. If the difference would have been 0, the bond polarity of the molecule is taken as non-polar.
- To determine the molecular shape of the given molecule, we calculate the hybridization of this molecule. The equation used for this is:
where,
V = number of valence electrons present in central atom i.e. Silicon = 4
N = number of monovalent atoms bonded to central atom = 4
C = charge of cation = 0
A = charge of anion = 0
Putting values in above equation, we get:
As, the total number of electron pairs is 4, this means that the hybridization of this molecule will be and the molecular shape will be tetrahedral.
- The net dipole moment of the molecule is 0 because of the symmetry of the molecule. Thus, the molecule is considered as a non-polar molecule.
Hence, the correct answer is polar, tetrahedral and non-polar.