Answers
Answer:
ionic bonding
Explanation:
In ionic bonding, electrons are completely transferred from one atom to another.
Answer:Ionic bond
Explanation:
Ionic bond involves a complete transfer of electron. For eg. in NaCl, Na gives one of its electron to Cl.
Related Questions
Given 35.0 grams of aluminum at 22.0 °C. What will be the final temperature of the Al if 300.0 joules of heat energy is added to the Al? (The specific heat of Al is 0.217 cal/g°C)
Answers
so 300= (35)(0.217)(F-22)
Which of the following is NOT a way unbalanced forces can cause an object to change its motion?
A. changing the object's direction
B. stop the obect from moving
C. the object's motion stays constant
D. start the object moving
Answers
help !!!!!!!!!!!!!!!!!!!
Answers
Let me know if you have any questions
Which option below will have a charge of negative 3?
A. Two electrons and five protons
B. Two electrons and three protons
C. Five electrons and two protons
D. Three electrons and two protons
Answers
Answer:
C
Explanation:
When the electron is greater than proton the atom will be negatively charged.
So, 2-5= -3
Hope this helped you!
But im not sure
Give an example of an element which was named as honour to a scientist!!
Answers
Explanation:
1) Einsteinium
2) Albert Einstein
Answer:
Einsteinium, Rutherfordium, Nobelium, Curium etc are some examples of elements named after scientists
If a string of Christmas lights goes out entirely when one light bulb burns out, the bulbs are connected in parallel with each other.
True
or
False
Answers
Answer:
False
Explanation:
A series circuit is one that is all connected
What is the primary intermolecular force the exist between molecules of carbon tetrachloride?
Answers
Answer:
Carbon tetrachloride is non-polar and so the only kind of force that can exist is induced dipole.
PLEASEEE HELP ME
Sulfuric acid is the most produced industrial chemical in the world. The chemical process involves many steps – the final step combines oleum (H2S2O7) with water to produce sulfuric acid (H2SO4). For the first batch of acid production, 1.20 kilograms of oleum is reacted with excess water, and 435 grams of sulfuric acid are produced.
• Write the balanced equation for the formation of sulfuric acid from oleum and water.
• Calculate the theoretical yield of sulfuric acid. Work must be shown to earn credit.
• Calculate the percent yield for the sulfuric acid production. Work must be shown to earn credit
Answers
Answer:
Balanced equation: H₂S₂O₇ + H₂O → 2H₂SO₄
Theoretical yield of H₂SO₄: 1322 g
Percent yield for the H₂SO₄ production: 33%
Explanation:
First of all, we determine the balanced equation:
H₂S₂O₇ + H₂O → 2H₂SO₄
Stoichiometry says that 1 mol of oleum reacts to 1 mol of water in order to produce 2 moles of sulfuric acid.
1.20 kg = 1200 g
We convert the grams to moles → 1200 g . 1mol/ 178.12g = 6.74 mol
Ratio is 1:2, so if we have 6.74 mol of oleum we can produce the double of moles of acid. (6.74 . 2) = 13.48 moles of acid.
This is the 100 % yield reaction, or it can be called theoretical yield.
We convert the moles to mass → 13.48 mol . 98g /1mol = 1322 g of acid may be produced.
In the problem, they said we produced 435 g of acid, so let's determine the percent yield.
Percent yield of reaction = (Produced yield / Theoretical yield) . 100
Percent yield of reaction = (435 / 1322) . 100 → 33 %
Ninety-five percent of igneous rocks
and metamorphic rocks are below
Earth's surface. Why is this true?
Answers
Answer:
This is so cause ...
Igneous rocks are formed when the molten material cools and hardens
and
Metamorphic rocks form when they are subjected to high temperatures and the great pressure of the rock layers above it.
So most of these rocks are found beneath the earth''s crust
(I hope im right... this might not be the perfect answer... but this as close as I can get.. I hope it usefull for u )
The given statement is true because igneous and metamorphic rocks are formed through processes that typically occur deep within the Earth's crust or mantle.
What are igneous rocks ?Igneous rocks are formed from molten magma that cools and solidifies beneath the Earth's surface, while metamorphic rocks are formed from existing rocks that are subjected to intense heat and pressure deep within the Earth.
After their formation, these rocks may remain buried beneath the Earth's surface due to ongoing geological processes such as plate tectonics, where rocks are pushed deeper into the Earth's mantle over time.
Additionally, erosion and weathering can expose rocks at the Earth's surface, but the majority of the exposed rocks tend to be sedimentary rocks rather than igneous or metamorphic rocks.
As a result, the vast majority of igneous and metamorphic rocks remain buried deep within the Earth's crust and mantle, making up the majority of the Earth's crust beneath the surface.
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What material was added to powdered rock during tuttle and bowen's experiments?
Answers
Answer:
water was added to powdered rock
Explanation:
______ The total number of protons and neutrons in the nucleus.
A. Atomic Number
B. Mass number
C. Atomic mass
And why? I give Brainliest!
Answers
Answer:
A. Atomic Number
Explanation:
The mass number is used to calculate the number of neutrons & electrons in one atom of an element. In order to calculate the number of neutrons you must subtract the atomic number from the atomic mass.
If 35.0 grams of coal (carbon) burns in 58.5 grams of oxygen gas, how many grams of carbon dioxide can be produced? Describe the steps.
C + O2 → CO2
Answers
Answer:
0.59
Explanation:
Is 0.59 because you are dividing 35.0g by 58.5 which will than give you 0.59
About 55L of a gas in a flexible container is under a pressure of 3.2 atm and at a temperature of 520K. What is the new volume of the gas if the temperature is raised to 760K and the pressure increases to 8.4 atm?
Answers
Answer:
30.62 L
Explanation:
From the question given above, the following data were obtained:
Initial volume (V₁) = 55 L
Initial pressure (P₁) = 3.2 atm
Initial temperature (T₁) = 520 K
Final temperature (T₂) = 760 K
Final pressure (P₂) = 8.4 atm
Final volume (V₂) =?
The final volume of the gas can be obtained as follow:
P₁V₁ / T₁ = P₂V₂ / T₂
3.2 × 55 / 520 = 8.4 × V₂ / 760
176 / 520 = 8.4 × V₂ / 760
Cross multiply
520 × 8.4 × V₂ = 176 × 760
4368 × V₂ = 133760
Divide both side by 4368
V₂ = 133760 / 4368
V₂ = 30.62 L
Therefore, the new volume of the gas is 30.62 L
One of your chores is to mow the lawn. The lawnmower runs on gasoline. The gasoline
burning is a
and the grass being cut is a
A. physical change, chemical change
OB. chemical change, physical change
C. physical change, physical property
OD chemical property, physical change
Answers
B
Explanation:
Burning is a chemical change and cutting grass is a physical change
Chemical change, Physical change. Hence, option B is correct.
What is physical property?A physical property is not related to a change in its chemical composition
A chemical change occurs when one chemical substance is changed into one or more different substances, such as when iron becomes rust.
A physical change occurs when there is change in structure but not in its composition.
Hence, Burning is a chemical change and cutting grass is a physical change.
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7. Put the following elements in order from smallest to largest atomic radius and explain
why:
C.0, Sn, Sr
Answers
Answer:
O, C, Sn, Sr
Explanation:
As per the periodic table trends, atomic radius of an atom deceases from left to right and increases down a group this is so because across a period or from left to right, number of protons increases that increases the nuclear charge and nuclear radius decreases. Down the group, atomic radius increases because energy level increases and distance between nucleus and outermost orbital increases.
The elements in order from smallest to largest atomic radius are:
O, C, Sn, Sr because as per the periodic table trends, oxygen (O) fall into right side of Carbon (C) in the periodic table and Strontium (Sn) and Tin (Sn) fall into down the group where Tin (Sn) is on the right side of Strontium (Sn).
Hence, the correct order is "O, C, Sn, Sr".
The ocean floor, some parts of which get no sunlight, is the *
Answers
Answer:
Aphotic zone
Explanation:
High solubility of ammonia in water what type of interaction is responsible for?
Answers
Answer:
The solubility of ammonia is mainly due to the hydrogen bonding and not the reaction. Other common substances which are freely soluble in water because they can hydrogen bond with water molecules include ethanol (alcohol) and sucrose (sugar).
Answer:
Hydrogen Bonding
Explanation:
The solubility of ammonia is mainly due to the hydrogen bonding and not the reaction. Other common substances which are freely soluble in water because they can hydrogen bond with water molecules include ethanol (alcohol) and sucrose (sugar).
Write the word and balanced chemical equations for the reaction between:
Magnesium and oxygen
Answers
Word equation
Magnesium + Oxygen = Magnesium oxide
Symbolic equation
Mg + O2 = MgO
Balanced symbolic equation
2Mg + O2 = 2MgO
What organelle makes proteins needed to repair damage or direct chemical
processes?
Answers
Answer:
ribosome
Explanation:
he ribosome is a cell or vertebrate structure that makes proteins. Proteins are required to direct the functions or functions of many cells, such as repair or chemical processes. The ribosome can be found floating within the cytoplasm or attached to the endoplasmic reticulum.
Analyses of mutations show they only result in variations in?
Answers
Answer:
Genetic variation
Explanation:
measure of the genetic differences that exist within a population.
Which environmental conditions contribute most to the spread of bacteria?
O A. cold temperatures and low humidity
B. warm temperatures and low humidity
oc, cold temperatures and high humidity
O
D. warm temperatures and high humidity
Answers
Explanation: Bacteria thrives in warm and moist environments.
C3H8+5O2 --> 3CO2 + 4H2O
If you start with 434 g O2
1. How many grams of C3H8 are needed?
2. How many grams of CO2 form?
3. How many grams of H2O form ?
please show work
Answers
Answer:
3, 4 ,1
Explanation:
Select the correct answer from A, B, C, D & E for each statement given below:
A: Anthracite B: Diamond
C: Carbogen D: Urea E: Lampblack
1. An allotrope of carbon used as a tip for deep boring drills.
2. The type of coal with the highest carbon content.
3. An allotrope of carbon, obtained by burning kerosene oil in a limited supply of air.
4. A nitrogenous fertilizer obtained from carbon dioxide.
5. A compound which finds use for a victim of carbon monoxide poisoning.
Answers
Answer:
Didn't know the answer, sorry.
Density is determined by dividing the __________ of a sample by the __________ of the sample. PLSSSS HELP MEEE!!!
volume; mass
mass; volume
mass; weight
Answers
The density of a sample is the ratio of its mass to volume. Thus it is determined by dividing its mass by the volume of the sample. Hence, option b is correct.
What is density?Density of a sample is the measure of its mass per unit volume. It describes how much denser the substance is in a particular volume of the substance. Mathematically it is the ratio of its mass to the volume.
The ratio of density of a substance to the density of water is called its specific gravity. If specific gravity is greater than one then it will sink on water whereas, if it is less than one the substance will float on water.
The density of a substance depends on the mass, volume, bond type, temperature and pressure. Thus, density of a substance vary with difference in temperature or pressure. Density can be expressed in units such as g/ml, g/cm³.
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dino nuggies dino nuggies dino nuggies
Answers
Answer:
i love dino nuggies!!!
Explanation:
there fun
Answer:
shut ur goofy as up
Explanation:
5. What is the charge of an atom that has lost four electrons? *
Answers
Answer:
+4
Explanation:
An atom is considered to be neutral before losing or gaining any electrons. They are neutral in charge because they initially have the same number of protons (with charge of +1 each) and electrons (with a charge of -1 each).
Consider charge in an electron like a balance, with positively charged protons on one side and negatively charged electrons on the other. When you have the same number of each, there is equal amounts of positive and negative charge so the atom is neutral with a charge of zero.
For example, potassium has 19 protons, and 19 electrons. This means it has
19 positive charges and 19 negative charges. If you take away one electron, it now has 19 positive charges and 18 negative charges. So there is one more positive charge than negative, which means it is now an ion (a charged atom) with a charge of +1. If you take away two electrons the charge becomes +2... 4 electrons the charge becomes +4.
Calculate the molarity of a solution prepared by dissolving 13.0 g of Na2CrO4 in enough water to produce a solution with a volume of 800. mL .
Express the molarity to three significant digits.
Answers
Answer:
molar mass sodium chromate = 162g
12.6g ÷ 162g/mole = moles sodium chromate (This is the solute)
molalrity or M = moles solute ÷ lliters of solution (You'll have to change given mL to L)
A wooden box with a mass of 50 kg in placed on a flat wooden table. What
the horizontal force required to overcome static friction and just cause th
box to slide? us = 0.70 for wood-on-wood. F = uxN
Answers
Answer:
is this have picture so I can solve
What do scientists do?
A. They make sure all facts fit scientific theories.
B. They make ethical decisions for the government.
C. They learn about the world through observation.
D. They use their knowledge to make public policy.
Answers
Scientists learn learn about the world through observation which helps in making scientific theories.
What are observations?
Observations are defined as a set of statements or facts which are recorded while conducting an experiment.Observations are made through sensing changes in the variables of the experiment.
It is specifically defined as an act of knowing or recording the changes in the variables of the experiment.Recording observations holds importance as recording observations avoid the experiment to be repeated over and over again.
It is important to note down observations so that the testing of hypothesis is made easier.There are four types of observations .Observations need to be descriptive and must be written in complete sentences and should include all the numerical data of the experiment.
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describe Transpiration
Answers
Answer:
is the process of water movement through a plant and its evaporation from aerial parts, such as leaves stems and flowers.
Answer:
well in easy terms... its just like the loss of water from the leaves or other parts of a plant due to evaporation
Explanation:
Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism.