The first one
HCl is a strong acid and NaOH is a strong base which will react and make H2O and NaCl
A different student is given a 10.0g sample labeled CaBr2 that may contain an inert (nonreacting) impurity. Identify a quantity from the results of laboratory analysis that the student could use to determine whether the sample was pure.
Answer:
Explanation:
It is density.
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Density of mercurio is
Answer:
The density of mercury is 13.6 g/mL, which is equal to 1360 kg/m3.
The Arizona poppy has adapted to living in areas that receive less rain, but there are still periods of time that a drought occurs. What part(s) of photosynthesis would the plant not be able to perform if there were no rain? What would be the long-term effects on the plant if the drought continues? Explain your answer.
Answer:
When plants lose more water than they can take up from the soil, they become water stressed. ... Such drought conditions certainly inhibit the growth of plants. If it goes long enough without water it will die because the plant uses water for a lot of different jobs needed to keep the plant alive, so the long-term effect is that the plant will die if the drought continues.
Explanation:
The Arizona poppy is the summer herb of deserts of southwestern US and has pinnately compound leaves and large snowy flowers. This poppy appears in rainy seasons.
Due to the drought like conditions and fast-changing climate the poppy plant has learnt to adapt to the harsh climate of Arizona and is able to carry out the process of photosynthesis. In the case of long-term drought conditions, the process of photosynthesis slows down as plant will absorb more light. This leads to stunted growth and possible death of the plant.Learn more about the Arizona poppy that has adapted to living in areas that receive less rain.
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9. How many grams of zinc are needed to produce 12 grams of zinc chloride according to the following equation? Y-
Zn + Cl2 --> ZnCl2
12 grams of zinc
O 2.9 grams of zinc
O 11.6 grams of zinc
O 5.8 grams of zinc
Given :
A balanced chemical equation :
[tex]Zn +Cl_2->ZnCl_2[/tex]
To Find :
How many grams of zinc are needed to produce 12 grams of zinc chloride.
Solution :
Moles of [tex]ZnCl_2[/tex] ,
[tex]n=\dfrac{Given \ wt}{Molecular\ Mass}\\\\n =\dfrac{12}{136.30}\ mol\\\\n=0.088\ mol[/tex]
Now, by balanced chemical equation we can say that 1 mol of Zn produce
1 mol of [tex]ZnCl_2[/tex] .
So, 0.088 mol of Zn is required to produced 0.088 mol of [tex]ZnCl_2[/tex] .
[tex]Mass \ required = molecular \ mass \times moles\\\\m = 65.38 \times 0.088\\\\m=5.8 \ gm[/tex]
Therefore, 5.8 grams of zinc is required.
Hence, this is the required solution.
During dialysis, water and urea pass from the blood into the dialysis fluid. Proteins stay in the blood.
(a) Name the process by which water passes from the blood to the dialysis fluid.
(b) Describe the process you have named in (a).
(c) Explain why water passes out of blood but proteins do not.
Answer:
Healthy kidneys clean your blood and remove extra fluid in the form of urine. They also make substances that keep your body healthy. Dialysis replaces some of these functions when your kidneys no longer work. There are two different types of dialysis - hemodialysis and peritoneal dialysis. The following is about hemodialysis.
I was wondering if this is correct?
Answer:
I believe you are correct
thats because All of the 2nd choices seem to be larger
What is the ion symbol for Xenon ?
Answer:
Xe
Explanation:
if ur talking about what it is for xenon
What is an electrolyte in an electrochemical cell?
Answer:
An electrolytic cell uses electrical energy to drive a non-spontaneous redox reaction. An electrolytic cell is a kind of electrochemical cell. ... The electrolyte is usually a solution of water or other solvents in which ions are dissolved. Molten salts such as sodium chloride are also electrolytes.
Explanation:
Explanation:
An electrolytic cell has three component parts: an electrolyte and two electrodes (a cathode and an anode). The electrolyte is usually a solution of water or other solvents in which ions are dissolved. Molten salts such as sodium chloride are also electrolytes.
Which of these features of Earth's crust are caused by the shifting of tectonic plates?
A
mid-ocean ridges
B
desert sand dunes
С
arctic glaciers
D
continental shelves
To solve this we must be knowing each and every concept related to tectonic plates. Therefore, the correct option is option A among all the given options.
What is tectonic plates?The lithosphere, which includes the crust and topmost mantle, is divided into portions by tectonic plates. Numerous dangers, including volcanic eruptions, earthquakes, and tsunamis, are caused by the relative movement of tectonic plates.
Because of the makeup of the rocks inside the plates, tectonic plates can float on the mantle. This reduces their density relative to the mantle. Granite rock, which contains quartz, feldspar, as well as other relatively light materials mostly comprised of silicon and aluminum, makes up the continental crust. Mid-ocean ridges, earth's crust are caused by the shifting of tectonic plates.
Therefore, the correct option is option A.
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Which statement below correctly identifies the number of subatomic particles inside and outside the nucleus of an argon atom?
A. There are 18 particles inside the nucleus and 18 particles outside the nucleus.
B. There are 40 particles inside the nucleus and 18 particles outside the nucleus.
C. There are 40 particles inside the nucleus and 40 particles outside the nucleus.
D. There are 40 particles inside the nucleus and 22 particles outside the nucleus.
Answer:
A
Explanation:
Argon atom is a noble gas. In argon atom, there are 18 particles inside the nucleus and 18 particles outside the nucleus. Thus, the correct option is A.
What is Argon atom?Argon is a non-metal element. It belongs to the group 18 (VIIIa) of the modern periodic table of chemical elements. This group is also called the noble gases group of the periodic table.
The argon atom is a noble gas which is made up of 18 protons and 18 electrons which are present inside the nucleus and outside the nucleus of the atom, respectively. The atom contains eight electrons in its outermost shell. Argon is a colorless and an odorless gas under the normal conditions. When argon is activated by the treatment of a high-voltage electric field, it emits a violet-colored light.
Therefore, the correct option is A.
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define radioactivity and write down properties of radioactive Ray's
Answer:
Explanation:
So basically is just explain what radioacitvity and then radidoactive
Radioactivity is the spontaneous release of energy from an unstable atom to get to a more stable state. Ionizing Radiation is the energy that comes out of a radioactive atom. Radioactive isotopes are radioactive atoms of the same element that have different numbers of neutrons.
Answer:
Radioactivity is the spontaneous release of energy from an unstable atom to get to a more stable state. Ionizing Radiation is the energy that comes out of a radioactive atom. Radioactive isotopes are radioactive atoms of the same element that have different numbers of neutrons.
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Explanation:
give an answer to questions 3 will give you 20 point ASSSAAPP
Answer:
Explanation:
1. It is five valence electrons.
2. It is four valence electrons.
3. It is six valence electrons.
4. It is two valence electrons.
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Answer:
1. c
2. b
3. a
4.d
Explanation:
You are calling the telephone company to discuss your bill. Your expected wait time on hold is
20,000,000,000,000,000,000 fs.
(a) Convert this time to seconds and decide if you would be willing to wait this long.
(b) What is this length of time in minutes?
(c) What is this length of time in years?
Answer:
(a) 20,000 seconds
(b) 333.33 repeating minutes
(c) 0.0006341958 years
The density of manganese is 7.21 g/cm^3 . What is the density in kg/m^3 ? (dimensional analysis)
Answer:
7.21 x 103 kg/m3
Explanation:
Dimensional analysis has been the process to establish and convert the various units in the measurement. The density of manganese in kg/m3 is 7.21 × 10³ kg/m³.
What is dimensional analysis?Dimensional analysis has been the method that is also referred to as the unit factor or factor label method. It solves the mathematical expressions by multiplying the given value with another without changing its quantity and amount. It is used to change the units of the value.
Given,
Density of manganese = 7.21 g/cm³
The dimensional analysis method is used to convert grams per cubic centimeter into kilograms per cubic meter as:
1 gram / cubic centimeter = 1000 kilogram / cubic meter
So, 7.21 g/cm³ = X kilogram / cubic centimeter
Solving for X as:
X = 7.21 g/cm³ × 1000 kilogram / cubic centimeter
X = 7.21 × 10³ kg/m³
Therefore, 7.21 × 10³ kg/m³ is the density.
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How many sig figs are in:
0.0058096
Can someone help with this one I’m desperate
Answer:
C
Explanation:
im not that sure if its correct
i really need help I WILL GIVE BRAINLIEST
Based on the synthesis reaction, what would the product of the reaction be? NaPO3 + CuO → ? NaO + CuPO3 Na + P + Cu + O4 NaCuPO4 NaCu + PO4?
THE ANSWERS C YALL I GOT IT RIGHT I THOUGHT I NEEDED HELP THX THOO
Answer:
The answer is c
Explanation:
Answer:
C
Explanation:
What is absolute zero? A) The temperature at which the particles of matter are at their lowest energy points. B) The temperature at which the particles of matter are at their highest energy points. C) Other _______________
Answer:
A) The temperature at which the particles of matter are at their lowest energy points.
Explanation:
Absolute temperature refers to the lowest possible temperature. At this state, no heat energy remains in the substance; the energy of the particles are at their lowest energy points.
Which is classified as an inner transition element?
a) calcium
b) copper
c) fermium
d) helium
Which of the examples represent potential energy A candy bar Wind A stretched rubber band Rowing a boat A ball rollinv down a hill A roller coaster at the top of a hill
Answer:
A candy bar
A stretched rubber band
A roller coaster at the top of a hill
Explanation:
Potential energy is the energy present as a result of the position of an object. This energy depicts zero motion or movement unlike kinetic energy.
A candy bar, stretched rubber band and roller coaster at the top of a hill all indicate positions without any said explanation of movement.
The other option choices depicts a type of movement .This is why the three option choices are correct in this scenario.
The examples that represent potential energy are:
A. A candy bar
B. A stretched rubber band
D. A roller coaster at the top of a hill
What is Potential energy?It is the stored energy in any object or system by virtue of its position or arrangement of parts. This energy depicts zero motion or movement unlike kinetic energy. For example : A candy bar, stretched rubber band and roller coaster at the top of a hill all indicate positions without any said explanation of movement.
Thus, correct options are A, B and D.
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The charge is affected by (more than 1 may be correct)
a. protons
b.mass
c.electrons
d.neutrons
Answer:
protons and electrons
Explanation:
protons give off a positive charge and electrons give off a negative charge
2) A wooden block has a volume of 176 cm3 and a density of 18.2 g/ cm3. What is the mass?
Answer:
9.67 g
Explanation:
176 cm³ / 18.2 g/cm³ = 9.6703296703...
I rounded to the nearest hundredth
true or false
The atomic number of an element can be used to find the number of protons and neutrons in a neutral atom
Environmental science is a *
A. narrowly defined set of physical, life, and social sciences.
B. subject that only deals with the environment.
C. collective of like-minded people that attempt to raise awareness and take action to protect our environment.
D. interdisciplinary subject used to gain knowledge about the environment.
Will a crayon dissolve in water?
Answer:
Yes
Explanation:Like wax crayons but they can dissolve in water.
Answer:
ye bit
Explanation:
A student walks 8 km in 30 minutes. What is the student’s average speed in km/h?
Answer:
16 km per hour
Explanation:
I hope this helped.
How many sig figs are there?
4000.
The number of significant figures in 4000 is 1
2000 km/sec. Convert that to
m/sec.
Answer:
2000 km/sec
1km=1000m
2000×1000
2000,000 m/sec
what is hydrophytes?
What type of element is used in the electronics industry because it is a semiconductor
Answer:
Pure Silicon in Electronics
Silicon material is commonly used as a semiconductor in electronics: devices such as transistors, printed circuit boards, and integrated circuits make use of silicon's highly conductive properties to maximize their performance.
Explanation: