Answer:
??
Explanation:
can someone please help ?????
Answer:
hey have one valence electron
they are called alkali metals not Alkaline earth metals
they react with water
are metals
Explanation:
hope this helps
which characteristic of nuclear fusion makes it hazardous?
A. it produces new elements from existing elements
B. it only happens in the sun and other stars
C. it destroys all the atomic nuclei that go through the process
D. it releases enough energy to cause great damage to buildings
im leaning towards B but possibly C
Answer: it releases enough energy to cause great damage to buildings
The characteristic of nuclear fusion makes it hazardous is option d. it releases enough energy to cause great damage to buildings.
What is nuclear fusion?It is the process where one or more light nuclei should be fused together for producing the heavier nucleus where there is a mass deficiency that should be released like the energy.
Therefore, based on this we can say that the option d is correct.
And, the rest of the options are considered to be wrong.
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Non-red hair is dominant. And Red hair is recessive. What are Josh's genotype and phenotype?
Phenotype = Non-red
Genotype = depends on what genes you are using
Mole Conversion: find the grams in 1.26 x 10^-4 moles of CH3COOH
2. Does sexual or asexual reproduction produces MORE diversity in offspring?
Answer:
sexual
Explanation:
During asexual reproduction, an organism splits into two separate organisms making them look the same.
An organism that was produced from sexual reproduction can have a number of combinations from both parent. For example if your mm had green eyes and your dad had brown eyes, you could either have brown, green, or hazel eyes. Or you could be a rare person that has one brown eye and one green eye... but like I said, that's rare in a person
Atoms acquire the stability of a noble gas by losing electrons
Answer:Atoms acquire the stable electron structure of a noble gas by losing electrons. An atom of an element in Group 1A has seven valence electrons. Among Group 1A and 2A elements, the group number is equal to the number of valence electrons in an atom of that element.
Explanation: Hope this help have an wonderful day and stay safe! :D
what will happen if you put carbon and water together plz answer
Answer:
Carbon dioxide reacts with water and produces carbonic acid (green irregular blob) which produces hydrogen ions. These ions bond to the carbonate ions and create a substance (bicarbonate ion not shown) that the organisms can't use.
Explanation:
i looked it up
Answer:
You get carbonated or fizzy water. The process requires that the cold/cool water be saturated with CO2.
Explanation:
5. (03.01 LC)
Which of the following is matter in its liquid form?(2 points)
Animals
Plants
Rain
Sunlight
Answer:
rain
Explanation:
rain drops are water and water us a liquid
The solubility of a gas is 0.14 g/L at STP. Its solubility at 50.°C and the
same pressure can be:
Answer:
0.12 g/L
Explanation:
We first calculate its molar mass M = solubility at STP × molar volume = 0.14 g/L × 22.4 L/mol = 3.14 g/mol
Using the ideal gas law, PV = mRT/M where P = pressure at STP = pressure at 50°C = 1 atm, V = volume of gas, m = mass of gas, R = molar gas constant = 0.082 atm L/mol-K, T = temperature of gas = 50°C = 273 + 50 = 323 K and M =molar mass of gas = 3.14 g/mol
So, PM/RT = m/V = solubility of gas at 50°C
So, PM/RT = 1 atm × 3.14 g/mol/(0.082 atm L/mol-K × 323 K)
= 3.14 atm g/mol ÷ 26.486 atm L/mol
= 0.119 g/L
≅ 0.12 g/L
Maya has an attached earlobe. What is responsible for Maya’s ear shape?
Answer:
A
Explanation:
The factor responsible for Maya having an attached earlobe is ; ( A ) The genetic material inside her cells nuclei where her chromosomes are found
The physical composition and shape of certain individuals' organs like ; eye color, nose shape and size of earlobe is dependent on the composition of genetic materials present in the nucleus of the cell and not environmental factors in which the offspring was born into.
The genetic materials contained in the blood cells does not determine the physical outlook of an individual but the contents and shape of the blood cells.
Hence we can conclude that The factor responsible fo Maya having an attached earlobe is, The genetic material inside her cells nuclei where her chromosomes are found
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How many moles of oxygen are needed in 100g of water
About 6.25 moles of oxygen.
plzz someone helppp!!
True or False: Write True or False in the blank next to the statement.
It is possible to have a decimal coefficient.
A Similar element replacing another in a compound is a Single Replacement
Both sides of the chemical equation must be equal after solving.
I wrote my name at the top of the page.
Synthesis Reactions involve a larger compound splitting into smaller parts. 10.
Answer:
im happy to help with any other questions!
true,true,false,true,false
Answer:
Here we goooo
Explanation:
False. Atoms cannot be divided.
It is possible to have a decimal coefficient.
True.
A Similar element replacing another in a compound is a Single Replacement
True, given the chemical reaction that took place.
Both sides of the chemical equation must be equal after solving.
I sure hope so.
I wrote my name at the top of the page.
False. That is decomposition reactions.
Synthesis Reactions involve a larger compound splitting into smaller parts. 10.
The movement of an object toward earth Soley because of gravity is called
Answer:constant acceleration. A steady change in velocity.
Explanation:
what is the density of a liquid is 67.1 mL of liquid weighs 55.221 g
Answer:
0.82 g/mLExplanation:
The density of a substance can be found by using the formula
[tex]density = \frac{mass}{volume} \\[/tex]
From the question we have
[tex]density = \frac{55.221}{67.1} \\ = 0.822965...[/tex]
We have the final answer as
0.82 g/mLHope this helps you
The literature value for the Ksp of Ca(OH)2 at 25°C is 4.68 × 10-6. How does the value you determined in the lab compare with this result? Explain what may have caused your result to differ from this value. (Clearly explain what may have happened. Should you have obtained the literature value? Clearly explain how this could have happened?)
The solubility equilibrium is the constant for the solid solute that gets dissolved in an aqueous solution. The experimental value is higher than the literature value.
What is solubility equilibrium?Solubility or the equilibrium constant (Ksp) is the level at which the solute gets dissolved in a solution and depicts the solubility of the solute.
The percentage error is calculated as:
[tex]\dfrac{(4.50 \times 10^{-3} - 4.68 \times 10^{-6}) \times 100}{4.50\times 10^{-3}} = 99.90\%[/tex]
The higher dilution or unsaturated calcium hydroxide may be the reason for the error and increased solubility of the solute.
Therefore, the experimental is higher than the theoretical value.
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Can someone please help me with this asap, it’s due today please help me
Answer:
lol I hate chemical but let me give some advice
Explanation:
Please go on Khan Academy or look at your notes and I promise you can figure out! Seriously, I am trying to be helpful not like the annoying teacher that says "figure it out"
explain why it is appropriate to group a polyatomic ion in parentheses in a chemical formula, if more than one of that ion is present in the formula
Answer:
See explanation
Explanation:
It is commonplace to put polyatomic ions in parenthesis when they are more than one in a compound. A typical example here is calcium phosphate- Ca3(PO4)2.
When a compound contains more than a single polyatomic ion of the same type,a parentheses is placed around the formula of that ion then a subscript is used to indicate how many of that particular ion are in the compound.
Titanium metal is used as a structural material in many high-tech applications such as jet engines. What is the specific heat of titanium in J/g°C if it takes 99.7 J to raise the temperature of a 34.7 g block by 5.20°C?
Answer:
0.553 J/g°C
Explanation:
From the question given above, the following data were obtained:
Heat (Q) required = 99.7 J
Mass (M) = 34.7 g
Temperature change (ΔT) = 5.20 °C
Specific heat capacity (C) =?
Thus, we can obtain the specific heat capacity of titanium as follow:
Q = MCΔT
99.7 = 34.7 × C × 5.20
99.7 = 180.44 × C
Divide both side by 180.44
C = 99.7 / 180.44
C = 0.553 J/g°C
Therefore, the specific heat capacity of titanium is 0.553 J/g°C.
Which physical property can NOT be observed using 5 senses without changing the chemical makeup of the object that you are observing?
A. Mass
B. Color
C. Ability to conduct heat
D. Texture
HELP 20 POINTS
Predict the products of each reaction
Na + HCl→
PbCl2(s) + Li2SO4(aq) →
Zn(s) + AgNO3(aq) →
Answer:
2Na + 2HCl → 2NaCl + H2
PbCl2 + Li2SO4 = LiCl + PbSO4
Zn(S) + AgNO3(Aq) = ZnNO3(Aq) + Ag(S)
write all the physical differences between metals and non-metals
Answer:
Metals shows the property of malleability while non-metals are non-malleable. Metals are generally those substances that have a shiny surface and thus are lustrous. Whereas non-metals have non-shiny appearance and thus falls under the category of non-lustrous substances.
Energy that is stored due to a shape is called
energy
The mass of an object on the Moon would have _______________ mass if it was moved to Earth.
would it be -
A~ less
B~more
or C~the same
Answer:
I think its A. Because space has no gravity..
Explanation:
Which of these is the most helpful first step for solving Ravi's equation, 2(x + 14) = 40?
Circle the best answer.
Add 14 to both sides
Subtract 14 from both sides
Divide both sides by 2
Multiply both sides by 2which statement best explains how the cell membrane helps a cell remove waste?
Answer:
multiply both sides by 2
Explanation:
you need to distribute the 2 to both the x and the 14.
The first step to solve Ravi's equation:
Divide both sides by 2.
The correct option is C.
What is an equation?An equation is a pair of algebraic equations with the equal sign (=) in the middle and the same value.
Given:
Ravi's equation 2(x + 14) = 40.
In order to solve the equation,
we first divide both sides by 2,
we get,
x + 14 = 20
x = 6
Therefore, the value is x = 6.
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-
PLEASE HELP ME ASAPPP PLS
31. Which compound contains an alkaline earth metal and a halogen?
Cas
RbC1
b. Rhys
d. CaCl,
a.
c.
The compound which contains an alkaline earth metal and a halogen is CaCl₂.
What is a compound ?Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.
Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:
1)Molecular compounds where in atoms are joined by covalent bonds.
2) ionic compounds where atoms are joined by ionic bond.
3)Inter-metallic compounds where atoms are held by metallic bonds
4) co-ordination complexes where atoms are held by co-ordinate bonds.
They have a unique chemical structure held together by chemical bonds Compounds have different properties as those of elements because when a compound is formed the properties of the substance are totally altered.
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In a series of controlled experiments, a student measures the force acting on a go-cart and the go-cart's acceleration. The student's data are shown below.
Based on the recorded observations, what is the mass of the go-cart in kilograms?
The mass of the go-cart in kilograms : 20 kg
Further explanationNewton's 2nd law explains that the acceleration produced by the resultant force on an object is proportional and in line with the resultant force and inversely proportional to the mass of the object
[tex]\large {\boxed {\bold {a = \frac {\sum F} {m}}}[/tex]
F = force, N
m = mass = kg
a = acceleration due to gravity, m / s²
Maybe the student's data are shown in the attachment
So, the mass of the go-cart :
[tex]\tt m=\dfrac{10}{0.5}=\dfrac{20}{1}=\dfrac{30}{1.5}=\dfrac{40}{2}=20~kg[/tex]
SnO2 + C → Sn + СО balance
Answer:
Tin(IV) Oxide + Carbon = Tin + Carbon Monoxide
Explanation:
How does the idea of a neutron help address the puzzles about the protons in the nucleus and the mass of atoms?
Answer:
a
Explanation:
which non metallic element is an essential constituent of nervous and muscular tissue?
Answer:
Phosphorus
Explanation:
The nonmetallic element, phosphorus, can be found in the tissues of the muscles, bones and nerves, and in the chemical adenosine triphosphate which is the major source of energy for the cells of the body.
Phosphorus is mainly concentrated in the bones, while phosphorus is also required to make the protein molecules that repair the body tissues as well as for growth
Phosphorus is also important for nerve signaling and normal heartbeat, contraction of the muscles and functioning of the kidney.
The non-metallic element should be an important constituent of nervous and muscular tissue should be Phosphorus
What is Phosphorus?It should be found in the tissues with respect to the muscles, bones, and nerves. Also, the major source of energy for the body cell should be triphosphate.
The phosphorous should be concentrated in the bones also it is needed for making out the protein molecules so the tissues of the body should be repaired for the growth purpose also.
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Why is a map considered a model?
Answer:
Every map is a representation of reality, thus a model in the broadest sense. Sometimes mapping is distinguished from modelling by stating that mapping is a simple representation of reality, while modelling is trying to cover more complexity in reality.
Explanation:
