Answer: Major radioactive elements (such as uranium) break down and create lead as one of ... Exposure to even small amounts of lead can be harmful since lead has no use in the body. ... of all industrial metals in the world because lead is easily re-melted and refined. ... Other metals that are found with zinc are silver and copper.
Explanation:
Please help me answerrr
Answer:
0.00439 g/mL
Explanation:
plz mark as brainliest if it helps.
You are measuring the effects of salt on water's ability to freeze. To one of your water samples, you add sodium chloride (NaCl, or salt). In this solution, which part is the solvent?
Question 8 options:
Water
NaCl
Both
Neither
Answer:
water
water is the worlds best solvent cause it can melt many different things also it is called the "Universal Solvent"
How do solve the uncertainly of a number?? plz help me
Answer:
How do solve the uncertainly of a number??
Explanation:
If you're adding or subtracting quantities with uncertainties. You add the absolute uncertainties. If you're multiplying or dividing, you add the relative uncertainties. If you're multiplying you multiply absolute uncertainties by the same factor, or do nothing to relative uncertainties.
Answer:
If you are taking a with power of a number with an certaintly ,you multiply the realtive uncertainty by number in the power .
Which property refers to how a mineral reflects light?
Luster is how the surface of a mineral reflects light. It is not the same thing as color, so it crucial to distinguish luster from color. For example, a mineral described as “shiny yellow” is being described in terms of luster (“shiny”) and color (“yellow”), which are two different physical properties.
Answer:
It is definitly Luster
Explanation:
How shiny something is or how its acts in the sun
which element has the lowest atomic mass?
Answer:
Hydrogen
Explanation:
Hydrogen has only 1 proton and has an atomic mass of 1. It does not have neutrons. Helium and above have higher mass than Hydrogen.
According to the electronic configuration, element with lowest atomic mass is hydrogen.
What is electronic configuration?Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
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Summarize the process a scientist goes through to come up with a
satisfactory solution.
Ex of physical Properties
What are the names of the products in the chemical equation shown below
Answer:
Yea I don't see any answers below but when you do I would love to help too!
Explanation:
Mick has a glass of water. Which of the following tools could he use to measure the volume of water he has in the glass? A. a spring scale B. a triple beam balance C. a metric ruler D. a graduated cylinder
Answer:
D
Explanation:
Study Island
Answer:
D. a graduated cylinder is the correct answer
Explanation:
If you were running an experiment to determine the temperature at which
beans grow the fastest, what would be the dependent variable?*
The number of beans you plant.
The height of the sprouts you grow.
The amount of water you give the beans.
The temperature at which each bean is kept.
Answer:
Well, it would be the height of the plant. The independant varibles would be the amount of water you give the beans or the temperature you keep them!
Explanation:
I hope this helps!
What is the application of Complexometric titration?
Explanation:
Complexometric titration (sometimes chelatometry) is a form of volumetric analysis in which the formation of a colored complex is used to indicate the end point of a titration. Complexometric titrations are particularly useful for the determination of a mixture of different metal ions in solution.
hope it will help u ✌️
kate and williams wedding cost about 21,000,000 english pounds how much is this in american dollars if
Answer:
2$
Explanation:
bru
How do protons, neutrons, and electrons differ in terms of their electrical charges and
locations within the atom?
Answer:
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. ... Electrons are electrochemically negatively charged particles that move random around the nucleus
Explanation:
Protons are positively charged, neutrons are neutral and they both are located in the nucleus whereas electrons are negatively charged and located outside the nucleus.
Explanation:
Atom is defined as the smallest unit of a matter.It consists of three subatomic particles: protons, neutrons, electrons.Protons and neutrons are located inside the nucleus. They are also known as nucleonsElectrons are located outside the nucleus.Protons carry a positive charge, electrons carry a negative charge, and neutrons carry no charge (neutral).So from this, we conclude that the protons are positively charged, neutrons are neutral and they both are located in the nucleus whereas electrons are negatively charged and located outside the nucleus
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Isotopes of an element have 2 things that change. What are they?
Answer:
.
Explanation:
Isotopes are different in neutrons and mass number.
how many grams are equal to 413 kg
Answer:
413,000 grams
Explanation:
Answer:
413,000
Explanation: That's because 1 kg equals to 1,000 grams.
Help Plzzzzzz!!!!!!!
What is the difference between magma and lava?
A Magma is molten rock within the earth; lava is molten rock on the earth's surface.
B Magma is cool, lava is very hot.
Magma is very hot, lava is cool.
D Magma is molten rock on the earth's surface; lava is molten rock within the earth.
Answer:
A
Explanation:
your welcome have a great day.
What is the charge of a carbon ion that has gained 4 electrons?
Answer:
Negative
Explanation:
Any atom gaining electrons will get a negative change since the charge of the electron is negative.
HELPPPP!
can we manufacture water? why or why not
Answer:
No because water needs to have no salt
Explanation:
Two or more different elements chemically combine to form compounds.
True or false
Answer:
true
Explanation:
is carbon dioxide gas an element or a compound
Answer:
Carbon Dioxide gas is a compound.
Describe to me the difference on an
atomic/particle level between a Solid and a Gas.
The 3 particles of the atom are:
Answer:
proton,neutron and electron
What is the number of protons plus the number of neutrons equal to?
A. atomic number
b. atomic charge
c. atomic isotope number
d.mass number
Answer:
atomic number
Explanation:
The mass number of the atom (M) is equal to the sum of the number of protons and neutrons
Your bedroom air conditioner blows very cold air at night but only cool air during the day. Your bedroom gets lots of direct sunlight all day long. What's the hypothesis and experiment.
What is the experiment
The MSDS for chloroform indicates that it is a clear liquid that has a pleasant smell and a substantial vapor pressure. Poeple should avoid inhailing its vapors, and it is sensitive to light .Malik needs 10 mls of chloroform for an expiriment.According to this information , how should hge safely pour the chloroform?
Answer:
C is the answer
Explanation:
Answer:
He should locate the chloroform stored in a dark container in chemical storage and should take it to the fume hood to pour.
Explanation:
1
How many significant figures are there in 9,000,500 mL?
Oil and water placed in a jar will separate. Even when
shaken and mixed, the oil still separates from the
water.
Which best describes oil and water?
Oil and water are highly soluble because they have
separate chemical properties.
Oil and water have a low solubility because they
have separate chemical properties.
Oil and water are highly soluble because they exert
different pressures
Oil and water have a low solubility because they
exert different pressures.
The answer is option B :)
According to the concept of solubility, oil and water have a low solubility because they have separate chemical properties.
What is solubility?
Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.
The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.
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It is believed the major reason for the decline in amphibian species is _______.
a.
death through disease
b.
changing reproductive habits
c.
mutation
d.
climate change
Answer: It is believed the major reason for the decline in amphibian species is death through disease.
Explanation:
The major reason for the decline in amphibian species is climate change.
Amphibians are organisms that can live on land and in water. They are
usually found around moist areas because they need water bodies to cool
off in order for their survival.
Climate change is characterized by an increase in temperature which
doesn't favor them as they lose more water which thereby threatens survival
and leads to their decline in the ecosystem.
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Which is the electron configuration for nobelium (No)?
O [Rn]7s25414
O [Rn]7s2547
O [Ne]3s 3p
O [Xe]6s25d1
Plz help
Answer:
the answer is [Rn]7s25f14 (first option)
Explanation:
i took the test
The electronic configuration for nobelium (No) is [Rn]7s²5f¹⁴, hence the correct option is A.
What is electronic configuration?The distribution of an element's atoms' electrons throughout several atomic orbitals is symbolically represented by the electronic configuration of that element.
A standardized nomenclature is used for expressing electron configurations, in which the energy level and type of orbital are written first, followed by the number of electrons in the orbital, which is expressed in superscript.
The atomic number of nobelium (No) is 102.
The number of protons is equal to the atomic number, which is 102.
The number of electrons is equal to the number of protons, which is 102.
Therefore, electronic configuration for nobelium (No) is [Rn]7s²5f¹⁴.
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The given question is incomplete, so the most probable complete question is,
Which is the electron configuration for nobelium (No)?
A. [Rn]7s²5f¹⁴
B. [Rn]7s²5f⁷
C. [Ne]3s²3p⁷
D. [Xe]6s²5d¹
Which two statements describe what happens to energy during cellular
respiration?
A. Some chemical energy is transformed into thermal energy
B. Light energy is transferred to molecules of ATP and used to carry
out life processes
O C. Some thermal energy is transformed into chemical energy
D. Chemical energy is transferred to molecules of ATP and used to
carry out life processes.
Answer:
Chemical energy is transferred to molecules of ATP and used to carry out life processes
AND
Some chemical energy is transformed into thermal energy.
Explanation:
During Cellular respiration, Some chemical energy is transformed into thermal energy and rest Chemical energy is transferred to molecules of ATP and used to carry out life processes.Hence, Option (A) and (D) are correct
What is Cellular rerspiration ?Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from nutrients into adenosine triphosphate, and then release waste products.
Therefore, During Cellular respiration, Some chemical energy is transformed into thermal energy and rest Chemical energy is transferred to molecules of ATP and used to carry out life processes. Hence, Option (A) and (D) are correct
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