Answers
Answer:approving new heart medications for public use
Explanation:
Related Questions
OMG PLS ANSWER IM USING SO MANY P OINTS I SWEAR I NEED
Answers
Answer:
1)They have different densities.
2) The molecules are packed differently
Explanation:
Oil and Water have different densities The first reason that water and oil don’t mix is because their molecules are packed differently. The molecules of water are packed very densely. (Would be good to show water molecules packed densely) In one glass of water, there are more molecules than the number of known stars in the universe!
Answer:
diff densities
Explanation:
what is the magnitude of earthquake took place in manila?
A.5.2
B.5.3
C.5.4
D.5.5
Answers
Answer:
i believe its 5.2
Explanation:
I think this is gonna be 2050 for memers
Answers
Answer:
HOLY WOAH
Explanation:
YES
A rocket travels 4500 meters in 150 seconds. What is its average speed?
Answers
Answer:
Your average speed was 3.77 Miles per hour
Explanation:
Name the following parts:
A—-
B——
C——
Answers
B—-Neutron
C—-Proton
Which of the following statements regarding bond energies is FALSE?
Answers
Answer:where are the statements
Explanation:
I really am bad at chemistry
Answers
Answer:
A, 4,3,3,4
B, 3,2,2,3
C, 2,6,2,3
D, 1,2,1, 1
Which helps regulate the temperature range of the Earth's atmosphere? Water or Land
Answers
Answer:
The oceans atmosphere. AKA Water.
Explanation:
The oceans and the atmosphere are the two large reservoirs of water in the Earth's hydrologic cycle. The two systems are complexly linked to one another and are responsible for Earth's weather and climate. The oceans help to regulate temperature in the lower part of the atmosphere.
Earth's atmosphere get warm up by the temperature absorbed by the gases in the atmosphere. However it can balanced water in earth such as ocean currents and cooling.
What is ocean currents?Ocean currents are formed from the pressure difference in ocean level and thus in day time there will be winds from ocean to land which cools the earth's surface.
Surface of the earth warms up by absorption of heat energy from sun. This warming will be higher if there are more greenhouse gases such as carbon dioxide, methane oxides of nitrogen, Sulphur etc.
Greenhouse gases intensely absorbs the temperature from radiation and thus increase the temperature of earth's surface. These gases are mainly evolved to the atmosphere by industries and factories.
Other factor which affects the temperature of earth surface include wind, ocean level etc. The level of ocean and ocean currents helps to regulate the temperature of the surface and make it cool.
To find more about ocean currents, refer the link below:
https://brainly.com/question/20823678
#SPJ2
What group on the periodic table is more reactive 5 or 6 and why?
Answers
Answer:
heheeheheh
Explanation:
A student is building an electrical circuit. Which material should she choose for wires, and why.
Look at the screen shot
Answers
D. A metal such as copper, because its atom have very mobile electrons - A-p-e-x verified!
Have a Great Day!
Earths rocks change from one type to another over time die to various earth processes A- igneous rock B- cementation C- metamorphic rock D- rock cycle
Answers
Answer:
The rock cycle describes the processes through which the three main rock types (igneous metamorphic, and sedimentary) transform from one type into another.
Determine the final temperature of sample with a specific heat of 1.1 J/g°C and a mass of 385 g if it starts out at a temperature of 19.5°C and 885 J of energy are added to it.
Answers
Answer:
T2 =21.52°C
Explanation:
Given data:
Specific heat capacity of sample = 1.1 J/g.°C
Mass of sample = 385 g
Initial temperature = 19.5°C
Heat absorbed = 885 J
Solution:
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = Final temperature - initial temperature
885J = 385 g× 1.1 J/g.°C×(T2 - 19.5°C )
885 J = 423.5 J/°C× (T2 - 19.5°C )
885 J / 423.5 J/°C = (T2 - 19.5°C )
2.02°C = (T2 - 19.5°C )
T2 = 2.02°C + 19.5°C
T2 =21.52°C
A solution of baking soda has a pH of 9. Baking soda
(blank)
Answers
Answer: is a base
Explanation:
Energy stored in an object because of position or condition is called ___________ energy.
Answers
Answer:
Potential energy
what is the molecular polarity of the following lewis structure
Answers
25.00 g of the compound is composed of 6.77 g of tin and 18.23 g of bromine. What is the percent by mass of tin in the compound? Show work.
Answers
The percent by mass of Tin : = 27.08%
Further explanationGiven
25.00 g of the compound
6.77 g of Tin
18.23 g of Bromine
Required
The percent by mass of Tin
Solution
Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison, so that compounds have a fixed composition of elements
%mass X = (mass X/mass sample) x 100%
So %mass of Tin :
= (6.77 g : 25 g) x 100%
= 27.08%
True or false for these!!!! Please help
Answers
True
True
False
True
False
Hope this helps!
Why are some energy resources more expensive to use than others?
Answers
Water has a molar mass of 18.0 g/mol. How many particles of water do you drink if you drink 64 oz., or 1893 grams, of water in a day?
Answers
Answer:
[tex] \frac{1839}{18} = 102.16[/tex]
Take 102.16 and multiply by avogadros #
and you get 6.33 × 10^25 otherwise A
Answer:
Answer is A
Explanation:
I just took this.
if an ion has 13 protons and 10 electrons what is the charge on the ion?
Answers
Answer:Al3+ indicates an ion of aluminum having a charge of + 3. I.e., since an aluminum atom normally has 13 protons and 13 electrons, this ion has 10 electrons (-10 charge) and 13 protons (+ 13 charge) giving it a charge of + 3 (-10 + 13 = +3).
Explanation:
The ion will have a charge of +3
The components of an atom and their charges are:
protons which have a positive charge electrons which have a negative charge neutrons which have no chargeThe charge of an ion will therefore depend on the number of electrons and protons as they cancel each other out.
The number of excess protons in this ion will be:
= Number of protons - number of electrons
= 13 - 10
= 3
Protons have a positive charge so there will be a charge of +3 as there are 3 excess protons.
In conclusion, this ion will have a charge of +3.
Find out more at https://brainly.com/question/21373859.
Please help me 30 pointsss dont guess please be sure
Answers
Answer:
Acid
Explanation:
;)
How many moles are present in 44.8 L of nitrogen gas (Na)?
Answers
Answer:
two moles
There are two moles.
Explanation:
The sun’s core is made of solid rock. True or false
Answers
Answer:
False
Explanation:
Heres what its made of:
The core is made of hot, dense plasma (ions and electrons), at a pressure estimated at 265 billion bar (3.84 trillion psi or 26.5 petapascals (PPa)) at the center. Due to fusion, the composition of the solar plasma drops from 68–70% hydrogen by mass at the outer core, to 34% hydrogen at the core/Sun center.
What characteristic of an element’s atoms always determines the element’s identity?
Answers
Answer:
Number of protons
Explanation:
There are three sub atomic particles. These are;
- Protons
- Electrons
- Neutrons
Among these three particles, only one determines the identity of the element. This is the Protons. The number of protons which is also called the atomic number determines the identity of an element. For instance, atom with one proton is Hydrogen and n other element can have atomic number of one.
There are 4 different types of sublevels: s,p,d,f true or false
Answers
I think it is true because level 4 has 4 sublevels which is s, p, d and f.
3. All the deer in Horry County represent which of the following?
species
biome
population
community
Answers
Answer:
community
Explanation:
Answer:
The correct answer is population. I took the test and got it right.
____ power is generated from the heat released when uranium atoms split in a process known as fission.
Answers
can someone help answer this? thanks!
if surface tension relies on intermolecular forces, how could you make surface tension decrease?
(think about how and where molecules bind to each other)
Answers
Answer:
We could make the surface tension to decrease by removing and causing a disruption to the intermolecular forces(hydrogen bonds).
Explanation:
To explain this answer, we will consider an experiment whereby a paper clip is made to rest at the top surface of water inside a container/beaker.
First of all, the intermolecular forces present in water are also known as hydrogen bonds.
It's relationship with surface tension is that when there is high surface tension in the water, this high tension will allow the paper clip to rest on top of the hydrogen bonds present at the top surface in between the water molecules.
However, the surface tension will decrease when we remove or cause a disruption to the intermolecular forces (hydrogen bonds).
Large areas on the leaves of some plants lack chlorophyll and are therefore not green in color. How does this most likely affect photosynthesis?
Not enough sunlight is captured in these areas of the leaves.
Carbon dioxide cannot enter these areas of the leaves.
Too much glucose builds up in these areas of the leaves.
Oxygen cannot be released in these areas of the leaves
Answers
Answer:
Not enough sunlight is captured in these areas of the leaves.
Explanation:
Photosynthesis is the process whereby green plants manufacture their food using carbon dioxide and water in the presence of sunlight.
The sunlight is the energy source which drives this chemical change or reaction.
Therefore, to capture the sunlight, the green pigment called chlorophyll is needed. Without this sunlight, photosynthesis will not take place. Photosynthesis is a light dependent reaction. Without light, the process is greatly hampered"Henry mixed salt and water together in a cup until he observed a clear solution. He measured the mass of the solution. Then he placed the cup outside for several sunny days during the summer. After a week, he observed that only solid salt remained in the cup and the mass had decreased. Henry concluded that a physical and chemical change occurred in this investigation."
Which statements correctly defend or dispute his conclusion?
A.)He is correct. Dissolving salt in water is a physical change, but evaporating the water is a chemical change. Formation of a solid is evidence that a chemical change occurred.
B.)He is correct. Evaporation is a physical change, but dissolving salt in water is a chemical change. The change in mass is evidence that a chemical change occurred.
C.)He is incorrect. Dissolving salt in water and evaporation of the water are both physical changes. The reappearance of salt is evidence that the change was reversible by a physical change, so it could not be a chemical change.
D.)He is incorrect. Dissolving salt in water and evaporation of the water are both chemical changes. The reappearance of salt is evidence that the change was reversible by a chemical change, so it could not be a physical change.
Answers
Answer:
C.)He is incorrect. Dissolving salt in water and evaporation of the water are both physical changes. The reappearance of salt is evidence that the change was reversible by a physical change, so it could not be a chemical change.
Explanation:
From the analogy of the problem presented, we can see that Henry is grossly incorrect. His conclusion from the process of the experiment he carried out is completely wrong.
Physical changes are changes that alters the physical properties of matter particularly the form and state.
Chemical changes leads to the formation of a new kind of matter.
We can see that since the salt was obtained back after evaporation, no change has occurred to it.
Therefore, evaporation in itself is a physical change process.
Answer:
c on ed
Explanation: