Answer: The two categories is porous evidence and nonporous evidence. Nonporous item of evidence is when you put the latent print on the surface and it just sits on the surface. Porous item of evidence is when you put the latent print on the surface and it absorbs the latent print deposit.
Which row gives the correct order of reactivity of the four metals?
(look at the attached photo)
Answer:
D
Explanation:
Answer:
C) gold - zinc - magnesium - lithium
Which coefficients will balance the reaction? ___CO + ___O2 ->___CO2
Answer:
in question
in question put the variable like
in question put the variable like 2,2,1
in question put the variable like 2,2,1 this is correct answer of this question
in question put the variable like 2,2,1 this is correct answer of this question hope it will help
in question put the variable like 2,2,1 this is correct answer of this question hope it will helpoption B is correct answer
Zn + 2HCl → ZnCl2 + H2
What is the half reaction for the reduction of hydrogen in the reaction?
Answer:
2H^+ +2e -> h2(g)
Explanation:
Since hydrogen is reduced, look for a decrease in oxidation number and the gain of electrons.
Answer:
ZnCl2 + H2
Explanation:
got it correct!
The ____________________ package and distribute materials to other parts of the cell.
Which of these is the main difference between aerobic respiration and anaerobic respiration?
Answer:
Aerobic Respiration
It can be found in the cytoplasm and the mitochondria.
Glucose breaks down into carbon dioxide and water.
Anaerobic Respiration
It can be found only in the cytoplasmic.
Glucose breaks down into ethyl alcohol, carbon dioxide and energy
Does transfer RNA perform its function in the nucleus or cytoplasm? Explain.
Answer:
Explanation:
Although tRNAs participate in the essential function of protein translation in the cytoplasm, tRNA transcription and numerous processing steps occur in the nucleus.
Transfer RNA carries amino acids to the ribosome and adds them to the growing protein, copies the coded message from the DNA in the nucleus and carries the message to the ribosome in the cytoplasm.
5) What is the volume of 6.70 x 10^15 molecules of propane, C3 H8 at STP?
What experiment did J. J. Thomson do?
A. He sent a cathode ray between electrically charged metal plates.
B. He suspended charged oil drops in a chamber.
C. He hit metal plates with light.
D. He shot alpha particles through gold foil
Answer:
A. He sent a cathode ray between electrically charged metal plates
I need help!
John decided to cycle to his friend’s house at a speed of 20km/h and the journey took 6 hours. How far did John cycle?
Answer:
120 km
Explanation:
If he goes 20km/h and travled for 6 hours then he would have gone 120 km. 20 multiplied by 6
What term is used when heat is absorbed by a reaction, thus leaving the surroundings colder
an element will always have the same number of?
A.Protons
B. Atoms
C. Isotopes
D. Neutrons
Answer:
A protons
Explanation:
the number of protons in the nucleus of every atom of an element is always the same.
What volume of ammonia (NH3) will react completely with 25.0 liters of O2? 4 NH3 + 3 O2 ---> 2 N2 + 6 H2O
Answer:
18,75 litres
Explanation:
4 NH3 + 3 O2 ---> 2 N2 + 6 H2O
n (NH3) : n (O2) = 4 : 3
<=>
V (NH3) : V (O2) = 4 : 3
Hence, V(O2) = 3 × V (NH3) ÷ 4 litres
V(O2) = 3 × 25.0 ÷ 4 litres
V(O2) = 75 ÷ 4 litres
V(O2) = 18,75 litres
If you have any questions, feel free to ask :)
Use the drop-down menus to select the names of the labeled structures.
A:
B:
C
Answer:
A:petal
B:pistil
C:stamen
Explanation:got it right on edu 2021
Answer:
C
A
B
Explanation: on ED about Identifying Earth’s Layers
Question 3 of 5
The hottest stars tend to be which color?
A. Red
B. Yellow
C. White
D. Blue
Answer:
Answer is D.Blue.
Explanation:
The hottest stars tend to appear blue or blue-white, whereas the coolest stars are red.
I hope it's helpful!
Answer:
D.Blue
Explanation:
Explain how force can be manipulated so objects with
different masses can fall at the same speed.
(Please help!)
The graph below shows how the amount of carbon dioxide (CO2) in our atmosphere has changed since 1960. A graph that plots the amount of atmospheric carbon dioxide in the atmosphere from 1960 to approximately 2005. The x-axis shows the time in years. The y-axis shows the carbon dioxide concentration in parts per million. The concentration is increasing over time. Based on the information given in the graph, which of these phenomena has likely increased since 1960?
land erosion
coastal erosion
ozone depletion
greenhouse effect
Answer:
greenhouse effect
Explanation:
Answer: greenhouse effect
Explanation:
the greenhouse effect increases the Earths temperature which is why there is an increase in CO2
Sheryl sketched models of two different neutral isotopes of carbon. If the isotope models are accurate, which statement might be true? (Refer to the periodic table if necessary.) O A. One shows 6 neutrons, and one shows 8. O B. One shows 5 protons, and one shows 7. O c. One shows 6 protons, and one shows 7. D. One shows 6 electrons, and one shows 5.
Answer:
O A. One shows 6 neutrons, and one shows 8.
_C6H10+_02->_CO2_H20
If 35 grams of cyclohexene(C6H10) and an excess of oxygen(02) combust how many grams of carbon dioxide (CO2) will be formed?
2) if an excess of cyclohexene (C6H10) and 45 grams of oxygen(02) combust how many grams of carbon dioxide(CO2) will be formed?
_C2H302H+_Al(OH)3->Al(C2H302)3+_H20
3)first determine the mass of aluminum acetate Al(C2H302)3 that can be made with 125 grams of acetic acid C2H302H
4)next determine the mass of aluminum acetate Al(C2H302)3 that can be made with 275 grams of aluminum hydroxide Al(OH)3
Answer:
whats the theisis
Explanation:mmm ok
how do I out pizza the hut?
Answer:
you get one of their pizzas and then put more toppings on cheese on the pizza
Explanation:
A prokaryotic cell does not have
А
a cell membrane.
B
genetic material.
C
a nucleus.
D
flagella.
Answer:
D
Explanation:
hey y’all, I’m growing a plant for science class but I need some questions about the plant, can someone please give me atleast 3 questions to answer for it.. can you give me atleast one tricky one
Hurry pls <3
Answer:
What type of plant
Where is it mainly found
What are some facts about it?
Please Help with 2. Thanks
The diagram shows a vertical number line. A vertical line with arrowheads at both ends has tick marks every 4 units with the tick marks for negative 4, 0, 8 labeled. The tick mark two past 8 has an X next to it. What is the position of point X? –16 –12 12 16
Answer:
16
Explanation:
Answer:
its 16
Explanation:
i took the quiz and it was right
How is the polar vortex different from the jet stream?
Which of the following forms of energy is not transmitted in waves?
Question 5 options:
light
sound
electrical
heat
Answer:
light
Explanation:
i did the quiz
why is this mars landing a new era for space exploration
Answer: The scientific reasons for going to Mars can be summarised by the search for life, understanding the surface and the planet's evolution, and preparing for future human exploration. Understanding whether life existed elsewhere in the Universe beyond Earth is a fundamental question of humankind.
Explanation:
A molecule of glucose is comprised of 6 atoms of carbon, 12 atoms of hydrogen, and 6 atoms of oxygen.
According to the information given above, what is the molecular formula of glucose?
Answer:
C6H12O6 the third choice
According to the given information , the molecular formula or the chemical formula of glucose is C₆H₁₂O₆.
What is chemical formula?Chemical formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols of elements. It also makes use of brackets and subscripts.
Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form is called empirical formula.
It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.
There are four types of chemical formula:
1)empirical formula
2) structural formula
3)condensed formula
4)molecular formula
Learn more about chemical formula,here:
https://brainly.com/question/29031056
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If there are 20.0g of KOH available, how many grams Ca(OH)2 will form?
I got a weird answer, so can someone explain?
Answer:
can u send the qsn 4rm the start so tt I can help
The method by which the substances in a mixture are separated is called what?
Answer:
Filtration is a separation method used to separate out pure substances in mixtures comprised of particles some of which are large enough in size to be captured with a porous material.
I need help in this problem for an assignment. Please
Answer:
1) increases
2)increases
3) Decreases
4) increases
5) increase
6) decreases
Explanation:
Let us remember that in a solid, the molecules of the substance are trapped in fixed positions hence the entropy of a solid is less than that of liquid as well as less than the entropy of a gas.
Reaction (1) and (2) deal with a change of state from solid to liquid or gas leading to increase in entropy.
In reaction (3) the aqueous reactants convert into a liquid product leading to a decreases in entropy.
Reaction (4) and (5) has to do with change of a solid to a gas as well as an increase in volume leading to an increase in temperature.
For reaction(6), a solid is formed so entropy decreases