Answer:
A, C, and DExplanation:
Microscopes make small things appear larger.
Hans and Zacharias Janssen created the first microscope.
A lens is a transparent material that helps show the details of things observed.
Answer:
A C and D i got it right on edge
Explanation:
What Happens When extra Solute is added to unsaturated ,saturated and supersaturated solution
Answer:
If More solute is added and it does not dissolve,then the original solution was saturated. if the added solute dissolves,then the original solution was unsaturated. A solution that has been allowed to reach equilibrium but which has extra undissolved solute at the bottom of the container must be saturated.
Which of these actions would decrease heat transfer between two objects?
increasing the temperature of the warmer object
increasing the area of their contact
reducing the thermal energy of the cooler object
reducing the time of their contact
increasing the area of contact
Answer:
D
Explanation:
Reducing the time of their contact
As you move down the periodic table the atomic radius gets bigger. This is because __
what is the oxidation state of calcium
0
Rule 1 states that the oxidation numbers of an atom in an element is always 0, so the oxidation number for Ca in the metal and O in O2 have oxidation numbers of zero
hope this helped :)
how many grams are there in 2.3x10^24 atoms of silver
Which statement best describes why radioactive atoms can be used to date materials?
A.
Nonradioactive atoms in rocks eventually turn into radioactive atoms.
B.
The Sun interacting with atoms in a rock causes new atoms to form over time.
C.
The ratio of radioactive atoms to other kinds of atoms changes over time.
D.
The number of radioactive atoms in a substance increases over many years.
The ratio of radioactive atoms to other kinds of atoms changes over time. Hence, option C is correct.
What is radioactive decay?In the process of radioactive decay the unstable atom nuclei of the parent nucleus break down and split so as to release the daughter atoms or nuclei along with the release of energy in the form of heat. Thus as the decay process proceeds the concentration of the parent atom decreases but the concentration of the daughter atom increases.
Radioactive atoms can be used to date materials because the radioactive decay occurs at a known rate, and the density of fission tracks for the amount of uranium within a mineral grain can be used to determine its age.
Hence, option C is correct.
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Which element below has properties of both metals and non metals ?
Answer:
I need more information.
Explanation:
Answer:
The answer is metalloids.
The metalloids are a unique group of elements that share properties of both metals and nonmetals. They're also called the semimetals because of the shared properties of these elements along the dividing line between metals and nonmetals.
Hope this helps, have a great day/night, and stay safe!
Verbal expressions, body language, and facial expressions are all __________ components of emotion.
A.
psychological
B.
physiological
C.
cognitive
D.
behavioral
Please select the best answer from the choices provided
Answer:
D
I just got it right
Answer:
D
Explanation:
On edge
INFER if the total mass of the products in a reaction is 90 grams,
what was the total mass of the reactants?
Answer:
90 grams. Input mass = output mass
Explanation:
what is the charge on copper in CuSO4?
is silver nitrate a gas or solid
Answer:
soild
Explanation:
Answer:solid
Explanation:
what did rutherford's gold foil experiment tell about the atom
Answer:
The alpha particles that were fired at the gold foil were positively charged. ... These experiments led Rutherford to describe the atom as containing mostly empty space, with a very small, dense, positively charged nucleus at the center, which contained most of the mass of the atom, with the electrons orbiting the nucleus.
can someone help me please
First response
Answer:
102°C is equal to
375.15 kelvin
Formula:
102°C + 273.15 = 375.15K
Therefore! your answer would be the third option
Answer:
375.15
Explanation:
102°C+273.15=375.15K
Hope I helped!
I need help please 18 points.
What is the overall charge of a Aluminum atom that loses 3 electrons
What is the correct order of biological levels of organization, from the most complex (largest) to least complex (smallest)?
Answer:
The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere
Explanation:
.
I need help it’s due in a couple minutes !
Answer:
chemical composition
Which of the following is accurate
regarding intrusive igneous rock?
A. It forms on the earth's surface.
B. It forms inside the earth.
C. It is made from sediments.
D. It has a fine-grained texture.
Answer:
B
Explanation:
I believe because intrusive stays within the earth
The accurate statement regarding the intrusive igneous rock is that It forms inside the earth.Hence, Option (B) is correct.
What are Intrusive igneous rock ?Intrusive, or plutonic, igneous rock forms when magma remains inside the Earth's crust where it cools and solidifies in chambers within pre-existing rock.
The magma cools very slowly over many thousands or millions of years until is solidifies.
Therefore, The accurate statement regarding the intrusive igneous rock is that It forms inside the earth.Hence, Option (B) is correct.
Learn more about Rocks here ;
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When ice cubes cause weathering, what type of weathering is it called?
Answer:
Chemical Weathering
Explanation:
Ice wedging and abrasion are two important processes of mechanical weathering. Chemical weathering breaks down rocks by forming new minerals. These minerals are stable at the Earth's surface. Water, carbon dioxide, and oxygen are important agents of chemical weathering.
- Weathering | CK-12 Foundation
Electromagnetic waves used in broadcasting are called?
A sample of helium gas at a pressure of 0.538 atm and a temperature of 256 °C, occupies a volume of 437 mL. If the gas is cooled at constant pressure until its volume is 316 mL, the temperature of the gas sample will be
Answer:
110 °C
Explanation:
The following data were obtained from the question:
Initial pressure (P1) = 0.538 atm
Initial temperature (T1) = 256 °C
Initial volume (V1) = 437 mL.
Final pressure (P2) = constant = 0.538 atm
Final volume (V2) = 316 mL
Final temperature (T2) =?
Next we shall convert 256 °C to Kelvin temperature. This Can be obtained as follow:
T(K) = T(°C) + 273
Initial temperature (T1) = 256 °C
Initial temperature (T1) = 256 °C + 273 = 529 K
Next, we shall determine the new temperature of the gas as illustrated below:
Pressure = constant
Initial temperature (T1) = 529 K
Initial volume (V1) = 437 mL.
Final volume (V2) = 316 mL
Final temperature (T2) =?
Applying the Charles' law equation, we have:
V1 /T1 = V2 /T2
437/529 = 316/T2
Cross multiply
437 × T2 = 529 × 316
437 × T2 = 167164
Divide both side by 437
T2 = 167164 / 437
T2 = 382.5 ≈ 383 K
Finally, we shall convert 383 K to celsius temperature. This can be obtained as follow:
T(°C) = T(K) – 273
T(K) = 383 K
T(°C) = 383 – 273
T(°C) = 110 °C
Therefore, the new temperature of the gas is 110 °C
HELP!!!!!!! THIS NEEDS TO BE DONE BY TODAY!!!!
Answer:I think it is A or C
Explanation:
Which organelle acts as a temporary storage center, containing water,
waste, and other products?
A. cell membrane
B. cytoplasm
C. vacuole
D. nucleus
Answer:
pretty sure it is vacuole
Explanation:
...
I turn the Ritz into a poor house
It's like eviction number four now
Go 'head and ash it on the floor now
Girl go 'head and show me how you go down
And I feel my whole body peaking
And I'm F anybody with they legs wide
NAME THE SONG
Brian's family has a compost pile at home. They put all the weeds they pull up from the garden in it as well as any vegetable waste they gather from the kitchen. If they keep it moist, all this vegetation will
eventually turn into organic soil by the chemical process of decay. Since decay involves a variety of chemical reactions, how might temperature affect the rate at which the compost turns into sol?
Temperatures near freezing would make it speed up.
It would happen faster at warmer air temperatures.
Changing temperatures would not affect the chemical reactions.
Warm summer air temperatures would make it slow down.
Answer:
Option - It would happen faster at warmer air temperatures
Explanation:
The chemical process of converting organic matter such as plants, litter into organic soil, or organic compost called decomposition and perform by decomposers such as fungus or bacteria.
Like all other living organisms, decomposers also live in an optimal range of temperature. The major decomposers normally lie in the range of 30 to 40-degree celsius. Any type of fluctuation in this range might slow down the reaction of decomposition.
The table below describes two parts of living cells.
WHO EVER ANSWERS IT I WILL GIVE BRAINIEST!!
Parts of Living Cells
Plant cell Animal cell
Part A Present Present
Part B Present Absent
Which of the following is most likely correct? (1 point)
a
Part A is vacuole, Part B is nucleus
b
Part A is mitochondria, Part B is cell wall
c
Part A is cell wall, Part B is cell membrane
d
Part A is chloroplast, Part B is mitochondria
Answer: membrane and cell wall
Explanation: this is because the cell wall is only known to happen in plant cells and a membrane is in both plant and animal cells so it is most likely membrane and cell wall.
Answer:
C
Explanation:
A sample of xenon gas occupies 1.90L at 251 kPa and -18°C. What was the temperature of the xenon if the gas originally measured 1.65 L at 205 kPa?
The temperature of the xenon : 180.863 K
Further explanationCombined with Boyle's law and Gay Lussac's law
[tex]\tt \dfrac{P_1.V_1}{T_1}=\dfrac{P_2.V_2}{T_2}[/tex]
P1 = initial gas pressure (N/m² or Pa)
V1 = initial gas volume (m³)
P2 = final gas pressure
V2 = finalgas volume
T1 = initial gas temperature (K)
T2 = final gas temperature
P1=251 kPa
T1=-18+273=255 K
V1=1.9 L
P2=205 kPa
V2=1.65 L
[tex]\tt \dfrac{251\times 1.9}{255}=\dfrac{205\times 1.65}{T_2}\\\\T_2=\dfrac{205\times 1.65\times 255}{251\times 1.9}=180.863~K[/tex]
What is the state of matter of neon at -247°C?
Answer:atomic number 10 noble gas
Explanation:
A ball is thrown upward as shown. Gravity pulls (accelerates) the ball back down. Which of the following statements is true?
Velocity and acceleration are both positive.
Velocity is negative and acceleration is positive.
Velocity is positive and acceleration is negative.
Velocity and acceleration are both negative.
Answer:
I think third one is the right answer
Explanation:
if it is right please mark me as brainliest
Answer:velocity is positive
acceleration negative?
Explanation:
How are protons and neutrons the same and how are they different?
Explanation:
Protons, Neutrons and Electrons are the three primary subatomic particles that form an atom.
Protons and Neutrons are large particles and are densely compacted into the nucleus of the atom. Protons are electrochemically positive in charge and the Neutrons are electrochemically neutral in charge.
Together the protons and Neutrons make up the mass of the atom.
Electrons are electrochemically negatively charged particles that move random around the nucleus. They have a relatively small mass compared to Protons and Neutrons. They are found in electron clouds that surround the nucleus and their movement and properties provide for the bonding characteristics of each atom.