Answers
Elephants and hyraxes share many anatomical similarities. They both have flat, hoof-like nails on the tips of their toes. They also have four toes on their front feet and three toes on their rear feet. Elephants and hyraxes both develop tusks from their incisor teeth instead of their canine teeth, like most other mammals. In addition to the anatomical similarities, fossil evidence has revealed that hyraxes and elephants share a 40-million-year-old ancestor.
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Imagine you are part of a group of engineers who need to test a scale model of a footbridge. It will be a $\frac{1}{20}$120 scale model of the bridge. The footbridge will cross over a busy road and allow people to cross the road safely. How could a relatively small design error of 2 centimeters in the model system cause a significant problem in construction of the bridge?
Pls help me u will get branilest pls help me
Answers
Answer:
The problem will be because:
The error in the construction of the bridge will be actually 40 cm.
Explanation:When you, as an engineer, listen about a scale 1/20, it means that for each 1 cm in the model, it will be 20 cm in the real footbridge (20 times upper to the scale model), then how the error in the model is 2 cm, the real error is 40 cm, in this case, imagine that you didn't know that the bridge will have an error of 40 cm, which is approximately 1,31 ft, from a side of the bridge you begin with the correct measure, and the other side you use the measure with the error of the 40 cm, the result is that when you going to finish the bridge in the center, this won't match, making more expenses to correct that big error.
Can you live without body tissue? This is a yes or no question, no explaining required, but you can add it if you want. :D
Answers
it depends but no you cant
What is the name given to this group of elements?
a.
halogens
c.
transition metals
b.
alkali metals
d.
noble gases
Answers
Answer: The answer is A. Halogens
Explanation:
I hope this helps you :)
help please science (7th grade)
Answers
Answer:
17
Explanation:
Don't mind the random letters
bshsujsjjdjd
Answer:
18
Explanation:
Give an example, other than making ice-cream or a slushy, where the effect of salt on the phase change of water is useful in everyday life.
ASAP PLS AND THANK YOU
Answers
Answer:
Putting salt on the ground to melt ice or snow I mean.
Explanation:
What measures the energy of a wave?
Answers
Answer:
ampiltude
Explanation:
Amplitude means a measure of the amount of energy in a wave. Notice in the drawing below how the amplitude measures the height a wave is going above or below the resting position of the wave.
What information does the periodic table give you?
Answers
The periodic table contains information about each of the known elements. It includes the name of each element, its atomic number, its atomic mass and its chemical symbol.
The periodic table is divided using groups (columns) and periods (rows).
Each specific group or period has a specific pattern in the elements.
The modern periodic table is arranged in order of increasing atomic number.
I’m not really sure what information what you were asking for but I hope this helps..
The modern periodic table was created by Dmitri Mendeleev with the main goal of showing rows and columns with a logic arrangement of chemical elements.
In each column, the groups, the elements have the same number of electrons in the outermost shells. While the rows are called periods or series.
Please Help Me
Do you think young people today are more or less environmentally conscious since the first Earth Day in
1970? Why?
Answers
Answer:
I think people now are more carefull with trash they throw on the ground and stuff because there more aware of what trashing the earth can do. These days, we have more scientific research on our planet and more people care then back then in 1970, there wasn't a law on littering or on saving the planet, so definetly people are better at keeping the earth clean now days.
Explanation:
Which of the following statements fully describes what an object may do when it experiences unbalanced forces? Select the two best answers.
A. It may change directions.
B. It will move at a constant speed.
C. It may slow down.
D. It may slow down or speed up.
E. It will stay stationary.
Answers
Answer:b
Explanation:
Write a three paragraph essay about being a scientist. Include the following: If you could be any kind of scientist, what kind would you be? Why? Describe what your life would be like as the scientist you imagine.
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Answer:
the answer is a hope this hep;slms
Explanation:
betuase im write
Answer:
If I were to be a scientist, I'd be a botanist. A botanist is a scientist who studies plants. For example, they study many different aspects like their genetic, physical structure, and the distribution. They also study the relationship between plants and their different environments.
I would choose to be a botanist, because they help save our plants which are very important. They also help with telling others what exactly causes pollution and possible ways to stop it. Botanist also help with providing human resources like food. Without botanist, we would have a lot less of resources that we use in everyday life.
I can see my life as a botanist in many different ways. I might be put in the chemical based section or I might be put in the analysis of plants. Overall if I were to see myself as any kind of scientist, It would have to be a botanist.
Explanation:
Hope it helps, feel free edit whatever you'd like too
The images below show two atoms. Using the document and a periodic table, determine the following:
Please answer all parts for full credit! (TOTAL POINTS = 14 pts)
a) What elements are depicted? (2pts)
b) How is each element classified (metal, nonmetal, metalloid)? (2pts)
c) What type of bond would form between these two atoms? (2pts)
d) What would the compound formed between these atoms be named? (4pts)
e) What would the formula be? (4pts)
Answers
Answer:
d
Explanation:
a) Atom 1 has 35 protons and 45 neutrons, which means it is the element bromine (Br). Atom 2 has 12 protons and 12 neutrons, which means it is the element magnesium (Mg).
What is a metalloid?A metalloid is an element that acquires both metal and nonmetal properties. Metalloids have some characteristics of metals, such as being good conductors of electricity, while also having some nonmetallic properties such as being brittle and lacking the ability to be hammered into shape. They are located along the "staircase" on the periodic table, between the metals and nonmetals, and include elements such as boron, silicon, germanium, arsenic, antimony, and tellurium. Metalloids are important in various applications such as semiconductor industry, in which silicon is the most widely used metalloid for the production of computer chips and solar cells.
b) Bromine (Br) is a nonmetal and magnesium (Mg) is a metal.
c) Magnesium (Mg) is a metal and bromine (Br) is a nonmetal, so they would form an ionic bond.
d) The compound formed between magnesium (Mg) and bromine (Br) would be named magnesium bromide.
e) The formula for magnesium bromide is MgBr2, since magnesium (Mg) has a +2 charge and bromine (Br) has a -1 charge.
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Explain why there would be many more plants in an ecosystem than ape-x consumers. I NEED THIS PLS
Answers
Answer:
Biomass decreases with each trophic level. There is always more biomass in lower trophic levels than in higher ones. Because biomass decreases with each trophic level, there are always more autotrophs than herbivores in a healthy food web.
Explanation:
there's your answer.
HEEEELP!!! THIS IS DUE TODAY
What is one of the most important forms of energy? Give two examples of how this type of energy is used in our lives.
Answers
Refrigeration used electrical energy.
Answer:
"There is no God but Allah, and Muhammad is his messenger." This is the basic statement of the Islamic faith: anyone who cannot recite this wholeheartedly is not a Muslim. When a Muslim recites this they proclaim: That Allah is the only God, and that Muhammad is his prophet.
I hope u find the right path
Explanation:
A diamond’s density is 3.2 g/cm3.
Determine the volume of a diamond that has a mass of 1 g.
Answers
Answer:
https://socratic.org/questions/diamond-has-a-density-of-3-52-g-ml-what-is-the-volume-in-cubic-centimeters-of-a-
Please help if you can.
Answers
Answer: i thought i knew but nver mind but on the last won it is c i belive
Explanation:
Which properties of grains determine the texture of rocks? Check all that apply.
Help ASAP!! Ty got 5 more mins this half my grade!!
A. feel
B. pattern
C. color
D. shape
E. size
Answers
Match each letter with the correct label. Use the atom diagram below.
Electron - Nucleus - Proton - Neutron
Answers
C= protons
B= neutron
A= electron
Answer:
Explanation: First and foremost, we must carefully examine the provided diagram in order to properly name the sections of an atom diagram.
Step-by-step instructions are given along with the answers in sequential sequence.
Correct answer for (A) is Electron since they are present at the outermost shell of an atom.The correct answer for (B) is Neutron since it is the central element of an atom.The proton is the right answer for (C), as it is included in the nucleus grouping with the neutron.The nucleus is the correct option for (D) since it is the primary component of the atom and includes both protons and neutrons.Learn more about the Atom here:
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Keesha performed a chemical reaction and the products looked quite different from the reactants. She knew the amount of matter had not changed due to the law of conservation of mass. According to the law of conservation of mass, what happens in a chemical reaction?
Answers
Answer:
matter can't change, but mass can differ
Explanation:
so i don't know what the answer would be so have fun with this
Answer:
matter is not created or destoryed and the amount of mass may change after the reation
hope this helps
Explanation:
What is true about matter?
A.
Matter has mass and takes up space.
B.
Matter has mass but does not take up space.
C.
Matter takes up space but does not have mass.
D.
Matter does not have mass or take up space.
Answers
Answer:
A). mateer has mass and takes place
Answer:
Explanation: Its c
PLEASE HELP DUE TONIGHT
Compare and contrast ions and isotopes using Carbon.
a. How are isotopes and ions of Carbon similar?
b. How are isotopes and ions of Carbon different?
For each, think about how many protons, electrons, and neutrons are in each as well masses and charges.
Site your source(s) if you use anything outside of our online text.
Answers
Answer:
⬇️
Explanation:
A:
Subatomic particles that are carbon atoms, isotopes and ions have in common are protons. A regular carbon isotope like carbon 13 and carbon ion all have the same number of protons in the atomic nuclei.
B:
Isotope's are versions of a particular element that have a different number of neutrons, while ions are atoms (can be molecules too) that have lost or gained electrons that have an electrical charge. These two also have a different amount of neutrons.
Isotopes have neutrons
Ions involve electrons
Hope that helps! <3
Answer:Differences between atoms ions and isotopes
Isotopes are versions of a particular element that have different numbers of neutrons. Ions are atoms (or molecules) that have lost or gained electrons and have an electrical charge. Isotopes involve neutrons. Ions involve electrons.
Explanation:Differences between atoms ions and isotopes
Isotopes are versions of a particular element that have different numbers of neutrons. Ions are atoms (or molecules) that have lost or gained electrons and have an electrical charge. Isotopes involve neutrons. Ions involve electrons.
Someone please help me if right I’ll give you 5$
Answers
Answer:DId you even read it you have to that in your lab class and says you need other information aint no way i can answer that
Explanation:
help
Nicole has 2 glasses on the counter: one of water and one of sugar-water. She is baking a cake and needs to use the sugar-water for the glaze. Both glasses look identical, but one contains a mixture and the other contains a compound.
Is sugar-water a mixture or a compound? Define mixtures and compounds, and explain how, without tasting it, Nicole can test to make sure she is using the sugar-water in the glaze.
Answers
Answer:
sugar-water is a mixture not a compound.(homogeneous mixture.)
Explanation:
Compounds are substances formed by the chemical combination of two or more elements. Mixtures are substances formed by physically mixing two or more substances together.
The solution of sugar in water is considered a mixture not a compound because the particles of sugar and water are not completely dissolve nor mixed in a fixed proportion or ratio. hope this helped :)
Answer: Nicole can take a small amount of sample from both of the glasses, she can place the samples in two separate containers and leave them out in the sun, so that the water gets evaporated. One of the two containers will contain a residue of sugar. The one containing the sugar residue, is the sugar-water solution.
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Hot water deep within Earth can _________________________ minerals and transport them someplace else.
Answers
Hot-Water Solutions Groundwater works its way down and is heated by magma, and then reacts with minerals to form a hot liquid solution. H. Dissolved metals and other elements crystallize out of the hot fluid to form new minerals, such as gold, copper, sulfur, pyrite, and galena.
Answer:
What happens to hot water beneath the Earth as it moves up through fractured rock?
Circulating groundwater that comes into contact with the cooling magma is heated and rises to the surface along rock fractures to form either a thermal spring, figmarole, or geyser.
Explanation:
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What are two minerals that could not be identified by using just one property?
Answers
Scientists have discovered a colony of potential organisms on the Planet Moby and named them "Maxoids." Read the information below that scientists have gathered on Maxoids and decide whether Maxoids are living or nonliving things. Explain how you came to this conclusion.
Through testing and observation, scientists have recorded the following characteristics of Maxoids. Maxoids reproduce via sexual reproduction. One parent carries the Maxoid eggs for 12 weeks before they hatch. After hatching, juvenile Maxoids continue to grow for seven months. To acquire energy for growth, Maxoids consume a peculiar liquid substance native to the planet Moby. The Maxoids' cells use this energy, as well as large amounts of water, to carry out important functions. The Maxoids are sensitive to changes in internal temperature. Sometimes they dig holes and lay in them to cool down if they get too warm.
Answers
The Maxoids are living things because they possess the characteristics of living things.
What are living things?Living things are things which have life in them.
Living things are identified by the characteristics which make them living.
The characteristics of living things include:
Movement - living things are able to move all or parts of their bodyRespiration - living things are able to break down food substances to produce energyNutrition - living things are able to take in food substancesIrritability - living things are able to respond to changes around themGrowth - living things are able to increase in size and massExcretion - living things are able to remove waste substances from their bodiesReproduction - living things are able to produce new ones of their kindConsidering the Maxoids;
They are able to reproduceThey take food in the form of a liquid substanceThey are sensitive to changes in internal temperatureIn conclusion, the Maxoids are living things.
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atoms and molecules are made up of
Answers
Les atomes sont composés de protons, électrons et neutrons.
Use the chemical reaction to answer the question. CaCO3→CO2+CaO A scientist heats 30 grams of calcium carbonate (CaCO3) in the chemical reaction shown.
What is the total mass of the products?
A. 10 grams
B. 15 grams
C. 30 grams
D. 60 grams
Use the chemical reaction to answer the question. Fe+O2→Fe2O3 What happens to atoms of Fe and O2 during the reaction?
A. They are lost.
B. They maintain their properties.
C. They are rearranged.
D. They gain mass.
What is most likely to occur during a chemical reaction?
A. Molecules of the original substance are lost.
B. Mass is conserved.
C. The original substance maintains its properties.
D. New atoms are created.
Use the chemical reaction to answer the question. NaHCO3+HC2H3O2→NaC2H3O2+H2O+CO2 A student mixes baking soda (NaHCO3) and acetic acid (HC2H3O2) to produce a chemical reaction shown.
Which statement about the reaction is correct?
A. There are more H atoms after the reaction.
B. The atoms of the reactants are regrouped during the reaction.
C. Atoms of Na are destroyed during the reaction.
D. Some atoms gain mass after the reaction.
Use the chemical reaction to answer the question. 2H2+O2→2H2O There are four atoms of hydrogen (H) before the reaction.
How many atoms of hydrogen are present after the reaction?
A. 5
B. 4
C. 2
D. 8
PLEASSSSSSSE ANSSSSWER ALL THE QUESTIONS------------
Answers
2.)B
Explanation:
The total mass of products obtained in the reaction; CaCO3→CO2+CaO is 30 grams. Given the reaction; Fe+O2→Fe2O3, atoms of Fe and O2 are rearranged during the reaction. During a chemical reaction, mass is conserved. Given the reaction NaHCO3+HC2H3O2→NaC2H3O2+H2O+CO2, we can see that the atoms of the reactants are regrouped during the reaction. Given the reaction 2H2+O2→2H2O, there are four atoms of hydrogen before and after the reaction.
According to the law of conservation of mass, atoms are neither created nor destroyed in a chemical reaction. Similarly, mass is neither created nor destroyed.
This means that the number of atoms of each element before and after the reaction must remain the same. A chemical reaction only involves the rearrangement of atoms in reactants to form products.
The total mass of reactants must be equal to the total mass of products according to the law of conservation of mass.
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How to work out the relative mass of potassium? What is the calculation? ( explained very easily )
Answers
Answer:
39
Explanation:
Relative mass does not need to be calculated as it is listed on the periodic table. Potassium's relative atomic mass is around 39.
———————————
(1/12)th Mass of one C12 atom
11. Hay is made up of organic compounds. What are the main elements in many organic compounds?
Answers
Answer:
35
Explanation:
Does anyone know how to write a good hypothesis (If…then)