7. A scientist is trying to determine the identity of an element. It is highly reactive in water
and forms an ionic bond with chlorine. It is also very shiny. The element is likely
(1 point)
from Group 17.
from Group 1.
from Group 15.
a noble gas.
Which of the following is an example of a chemical name using prefixes?
O A. Carbon dioxide
O B. Magnesium sulfate
O C. Iron(ll) carbonate
O D. Potassium chloride
Answer:
A
Explanation:
Explain why according to the kinetic theory of matter there is a problem with the Celsius scale for temperature.
Answer:
The Celsius scale is currently defined by two different temperatures: absolute zero and the triple point of Vienna Standard Mean Ocean Water (VSMOW; specially purified water). Based on this, the relationship between Celsius and Kelvin is as follows: TCelsius=TKelvin−273.15 T Celsius = T Kelvin − 273.15 .
An atom has 6 protons, 7 neutrons and 5 electrons. what element is it?
Answer:
Carbon
Explanation:
Because it was very
Suppose the quantum number rule for the angular momentum quantum number, I was
l = 0,1,2,...,l
Instead of
l = 0,1,2,...,l-1
Drag the text components into the boxes to create the Ar electron configuration for the new rule.
Explanation:
Hi sis
Please mark me brainliest and thank me and rate me.
What are colliding when plateaus and mountains ranges are formed
Answer:
mountain ranges form when pieces of Earth's crust—called plates—smash against each other in a process called plate tectonics, and buckle up like the hood of a car in a head-on collision.
Hope that answers your question.
What will an object moving at a constant velocity do?
come to a stop, unless it is pushed by another force
A.increase in speed
B.maintain a constant velocity until acted on by another force
C.come to a stop on its own
Answer:B
Explanation: an object in motion will stay in motion until acted on by another force and an object in rest will stay in test until acted on by another force
Will IO- and NaOH form a buffer?
Answer:
this is the answer for will NaOH be a buffer
Explanation:
The compound CH 3NH 3Cl is a salt made from that weak base, so the combination of these two solutes would make a buffer solution. NH 3 is a weak base, but NaOH is a strong base. The combination of these two solutes would not make a buffer solution
What does a control group show in an experimental investigation?
the effects that the scientists are causing by manipulating variables
how nature would act without manipulation by the researchers
why each part of a system is related to every other part
all parts of a system that scientists are controlling and changing
Answer:
its b
Explanation:
To convert measurements in the metric system you can move the decimal point left or right why does this work?
Explanation:
Because when you move the decimal point once, it it equal to 10 and to convert in the metric system, you must multiply or divide by 10. For example, when converting 4 centimeters to millimeters, you can multiply by 10 to get 40 millimeters or you can move the decimal point to the right and add another 0 to get 40.
Answer:
when you move tne decmal point it alwase ads up to ten
Explanation:
Most of the dissolved substance in sea water is: hydrogen chloride nitrogen sodium ANSWER NOW! I NEED HELP ASAP! WILL GIVE BRAINLIEST!
Answer: Sodium chloride
Explanation:
Ocean water contains a number of substances. When a substance which has ionic bonds is dissolved in water it takes the form of ions.
The most common ions in ocean water are sodium and chloride. These are the ions formed when common salt, sodium chloride (NaCl) is dissolved in water.
Sodium chloride accounts for about 3% of ocean water by mass.
Answer:
By far, the most abundant elements are hydrogen and water.
Explanation:
The analysis of the 77 sea water samples taken during the Challenger's 3-year voyage did much to lay the foundations for determining the chemical content of sea water. By far, the most abundant elements are hydrogen and water (combined to make water). Together, these elements make up 96% of sea water. Sodium chloride and magnesium make up just under 4% of sea water. Trace amounts of 97 other elements are found in the remaining 0.08%. Of the trace elements, calcium, potassium, sulfur, and bromine are the most abundant.
This is directly from the text.
GIVING BRAINLIEST I NEED ANSWER IN LESS THAN 5 mins!
Is this a scientific model? Use complete sentences to explain why or why not.
Answer:
its a scientific model
Explanation:
It is a scientific model because it is showing the water cycle. In the water cycle it is scientifically showing how water circulates through the Earth. For example, the water in the ocean evaporates which is evaporation, then it condensates into a cloud that then becomes condensation and the condensation makes precipitation when it rains. When it falls to the ground, it then becomes a runoff down a hill.
does hydrogen builds all the acids??
Answer:
hydrogen builds many acids but not all
What reagent is
used to test for starch
Answer:
iodine
Explanation:
In the presence of starch, iodine turns a blue/black colour. It is possible to distinguish starch from glucose (and other carbohydrates) using this iodine solution test. For example, if iodine is added to a peeled potato then it will turn black. Benedict's reagent can be used to test for glucose.
Questions and Problems 22 When water is heated, the temperature eventually reaches a constant value and forms a plateau on the graph. What does the plateau indicate?
Answer:
It indicates phase changes: melting then later boiling.
Explanation:
On the heating curve of water, the plateau marks phase change transitions.The temperature remains constant during this period.The first phase change is melting of water.The second phase change is boiling of water to gas.
Use the drop-down menus to complete each sentence.
A
is an organism that eats other organisms to gain energy; it is also called
.
A
is an organism that makes its own food; it is also called
.
A
is an organism that breaks down waste and dead organisms.
Answer:
A consumer is an organism that eats other organisms to gain energy; it is also called a heterotroph.
A producer is an organism that makes its own food; it is also called an autotroph.
A decomposer is an organism that breaks down waste and dead organisms.
Explanation:
Green plants are examples of autotrophs that make their own food by photosynthesis - they don't rely on other organisms to provide them with energy.
In contrast, many organisms rely on other organisms as an energy source. These organisms are called consumers or heterotrophs. They consume producers and other consumers.
Decomposers such as some fungi, bacteria, and certain insects break down dead or decaying biological material and recycle the nutrients back into the soil.
Answer:consumer a heterotroph producer an autotroph decomposer
Explanation:
The element with 6 valence electrons and 3 energy level is
Answer:
sulfur
Explanation:
Which sample contains the greatest number of atoms?
(a) 10.0 g He (b) 25.0 g Ne (c) 115 g Xe
Which of the following could not be responsible for the acceleration of an object?
wind
gravity
density
friction
Answer:
i believe its friction
Explanation:
friction slows down objects
Which two particles are found in an atom's nucleus?
O A. Neutrons
O B. Electrons
O C. Protons
O D. Isotopes
Answer:
protons and neutrons so A and C
dentify the following chemical reactions as decomposition, combination/synthesis, single-displacement, double-replacement, or combustion.
(a) AgNO3(aq) + KCl(aq) → AgCl(s) + KNO3(aq)
(b) C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(l)
(c) Cu(s) + 2 AgNO3(aq) → Cu(NO3)2(aq) + 2 Ag(s)
(d) Cu(s) + 2 AgNO3(aq) → Cu(NO3)2(aq) + 2 Ag(s)
(e) SrO(s) + SO2(g) → SrSO3(s)
Answer:
(a)Double Replacement
(b)Double Replacement
(c)Single replacement
(d)single replacement
(e) synthesis
How many electrons should Nitrogen (N) have around its Lewis dot model?
Answer:
5
Explanation:
5 electrons Nitrogen (N) have around its Lewis dot model. Therefore, the correct option is option D among all the given options.
What is nitrogen?Nitrogen (N), a nonmetallic element belonging to Periodic Table Group 15 [Va]. It is a colorless, flavorless, and odorless gas that makes up the majority of the atmosphere on Earth and is a component of all living things.
In terms of cosmic abundance, nitrogen is the sixth most abundant element. The main supply of nitrogen for trade and industry is the atmosphere of Earth, which contains 75.51 percent nitrogen by weight. Aside from nitrogen oxides and nitric acid, the atmosphere also includes variable tiny quantities of ammonia and ammonium salts. 5 electrons Nitrogen (N) have around its Lewis dot model.
Therefore, the correct option is option D.
To learn more about nitrogen, here:
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Identify each of the pictures as heterogeneous or homogeneous
Answer : The image C shows homogeneous mixture and image A, B and D shows heterogeneous mixture.
Explanation :
Heterogeneous mixtures : It is a mixture in which the constituent substances are not mixed well and do not have a uniform composition throughout the mixture that means appears non-uniformly throughout the solution.
Homogeneous mixtures : It is a mixture in which the constituent substances are mixed well and have a uniform composition throughout the mixture that means appears uniformly throughout the solution.
From the given image we conclude that the,
image C shows homogeneous mixture and image A, B and D shows heterogeneous mixture.
Plzzz help me answer this question!!,!
Question 2
Calculate the velocity of a pickup truck with a de Broglie wavelength of 1.27 10-38 m and a
mass of 2347 kg
Explanation:
de Broglie wavelength= h/mv
v=h/m x de Broglie wavelength
v= (6.626× 10^-34)/ (2347× 1.27 × 10^-38)
v= 22.229 m/s(according to Google scientific calculator)
am sorry I don't hv a calculator at hand
Which organ produces the female hormone estrogen?
A. Hypothalamus
B. Ovary
C. Pancreas
D. Testicle
Answer:
b-ovaries
Explanation:
Answer:
ovaries
Explanation:
i just know trust me tell me if its wrong
What does Prokaryotic have that other cells does not
Answer:
Prokaryotes are unicellular organisms that lack membrane-bound structures, the most noteworthy of which is the nucleus. ... While prokaryotic cells do not have membrane-bound structures, they do have distinct cellular regions. In prokaryotic cells, DNA bundles together in a region called the nucleoid.
Choose all the answers that apply. Which of the following energy forms are involved in a nuclear power plant?
1)heat
2)mechanical
3)electrical
4)nuclear
Answer:Three mutual conversions of energy forms occur at nuclear power plants: nuclear energy is converted into thermal energy, thermal energy is converted into mechanical energy, and mechanical energy is converted into electric energy.
Explanation:
What causes hurricanes in the northern hemisphere to roster counterclockwise ?
-ocean temperatures
-the saffir-Simpson scale
-the strength of the eyewall
-the coriolis effect
Answer: The answer is D.
Explanation:
As the air rushes toward the center, it winds up moving in a curved path thanks to the Coriolis effect. This creates a circular spinning pattern as air travels from areas of high pressure to low pressure. That's why hurricanes originating in the northern hemisphere rotate counterclockwise.
Hope this helps!
For a reversible reaction, what would a large equilibrium constant indicate?
Question 5 options:
A)
At equilibrium, there will be no reactants left because they will all have been turned into products.
B)
At equilibrium, the concentration of the reactants will be much higher than the concentration of the products.
C)
At equilibrium, the concentration of the products will be about the same as the concentration of the reactants.
D)
At equilibrium, the concentration of the products will be much higher than the concentration of the reactants.
(D) At equilibrium, the concentration of the products will be much higher than the concentration of the reactants.
