Answer:
They may not have any predators.
Explanation:
1. The type of bond most likely to
occur between Mg and Br is a(n)
bond.
---
Answer:
Ionic bond.
Explanation:
Group 7 elements like Bromine (Br) and group 2 elements like Magnesium,(Mg) involved loss and gain of electrons which is typical with Ionic bonding.
Which structure is unique to vertebrates?
limbs
brain
skin
backbone
Answer:
Backbone
Explanation:
Organisms that have backbones are known as vertebrates, while the ones without a backbone are classified as invertebrates.
The structure that is unique to vertebrates is the backbone.
What are vertebrates?Vertebrate, also known as the Craniata. It is the type of animal where it should be predominant of subphylum. Moreover, it contains the backbones. The animal or the organism that have the backbones that we called as the vertebrates however the organism or animal that does not have any backbone is known as the invertebrates
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how is the water cycle the driving process behind weathering erosion and deposition
How do I balance coefficient equations
Answer:
In order to balance the chemical equation, you need to make sure the number of atoms of each element on the reactant side is equal to the number of atoms of each element on the product side. In order make both sides equal, you will need to multiply the number of atoms in each element until both sides are equal.
Answer: When you balance a chemical equation, you change coefficients. You never change subscripts. A coefficient is a whole number multiplier. To balance a chemical equation, you add these whole number multipliers (coefficients) to make sure that there are the same number of atoms on each side of the arrow.
Explanation:
More than half of the elements are in which state of matter at room temperature?
What happens to the atomic mass when the atomic numbers increase?
Which elements does not belong to a main group of elements?
Please help I really need help!!
Answer:gas
Explanation:
The graph below shows distance over time. Which of these situations
could be represented by this graph?
Pls answer quick
Answer:
the second option
Explanation:
look at the distance where the meet up at the house and the go to school
understanding coefficients
Answer:
Mg-9
N-6
C-2
O-4
Ca-9
P-6
O-24
Explanation:
2. Germ cells are found in the
A. heart
B. lungs
C. muscles
D. ovaries
Answer:
D- located in ovaries...
if a runner decreases his velocity from +20 m/s to +10 m/s what is his average acceleration
Answer:
f a runner decreases his velocity from +20 m/s to +10 m/s, with average acceleration is -5m/s².
Explanation:
Which animal is a vertebrate
Fish
crab
shrimp
octopus
Answer:
fish
Explanation:
vertebrate is an animal with a spinal cord surrounded by cartilage or bone ,so example of a vertebrate is fish
What is the correct IUPAC name for Al(IO₃)₃?
Answer:
Aluminum Iodate
The IUPAC name of Al(IO3)3 is diiodyloxyalumanyl iodate.
What is IUPAC name ?The systematic method of nomenclature of the organic or inorganic compound on the basis of International Union of Pure and Applied Chemistry.
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Read the question and help me with the answer please
What consist of a solid matter?
Determine the number of grams of carbon-14 remaining in this sample at 17,100 years.
Answer: I need help
Explanation:
What are the three major Eras from 600 million years ago to today
Answer:
he Paleozoic, Mesozoic, and Cenozoic.
Explanation:
A buffer solution contains 0.345 M acetic acid and 0.377 M sodium acetate . If 0.0613 moles of potassium hydroxide are added to 250 mL of this buffer, what is the pH of the resulting solution ? (Assume that the volume does not change upon adding potassium hydroxide. )
Answer:
pH = 5.54
Explanation:
The pH of a buffer solution is given by the Henderson-Hasselbach (H-H) equation:
pH = pKa + log[tex]\frac{[CH_3COO^-]}{[CH_3COOH]}[/tex]For acetic acid, pKa = 4.75.
We calculate the original number of moles for acetic acid and acetate, using the given concentrations and volume:
CH₃COO⁻ ⇒ 0.377 M * 0.250 L = 0.0942 mol CH₃COO⁻ CH₃COOH ⇒ 0.345 M * 0.250 L = 0.0862 mol CH₃COOHThe number of CH₃COO⁻ moles will increase with the added moles of KOH while the number of CH₃COOH moles will decrease by the same amount.
Now we use the H-H equation to calculate the new pH, by using the new concentrations:
pH = 4.75 + log[tex]\frac{(0.0942+0.0613)mol/0.250L}{(0.0862-0.0613)mol/0.250L}[/tex] = 5.54before phase change: molecules move around each other 15. The medicine in the diagram above has molecules that are moving around each other. The doctor needs to slow down the molecules enough to cause a phase change. How will she do this, and how will this affect the medicine? I She transfers energy ... a into the medicine until it is a liquid. b) into the medicine until it is a gas. C out of the medicine until it is a solid. d out of the medicine until it is a liquid. LE 1 21 Illuminate Education, Inc.
Answer:
She transfers energy out of the medicine until it is solid. So the answer would be C.
Explanation:
According to the forces of attraction , molecules can be slowed down by moving out of the medicine until it is a solid , it will decrease the rate of absorption of medicine.
What are forces of attraction?Forces of attraction is a force by which atoms in a molecule combine. it is basically an attractive force in nature. It can act between an ion and an atom as well.It varies for different states of matter that is solids, liquids and gases.
The forces of attraction are maximum in solids as the molecules present in solid are tightly held while it is minimum in gases as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.
The physical properties such as melting point, boiling point, density are all dependent on forces of attraction which exists in the substances.
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what is the reaction type for Zn(C2H3O2)2 + Na3(PO4)?
Answer: This is a precipitation reaction: Zn 3(PO 4) 2 is the formed precipitate.
Explanation:
Go this Answer form, (chemequations.com)
Im Glad I helped! =)
What change in volume results if 170.0 mL of gas is cooled from 30.0 °C to 20.0 °C? (CHARLES LAW)
Answer:
164.4 L
Explanation:
use charles' law formula Volume 1 over Temp. 1 equaled to Volume 2 over Temp. 2
how many grams of carbon tetrachloride can be produced from reacting 709.0 grams of chlorine (CI2) with excess methane?
What is uranium classified as
Akali Metals, Akaline Metals, Metalloids, Halogen, Noble Gas, Transition Metal, Rare Earth Metal or Non-Metal?
SOMEONE PLEASE HELP I NEED THIS NOW PLEASE JUST THIS ONE QUESTION I DON’T KNOW
Answer:
uranium is classifide as actinide a chemical element atomic number 92 and is a solid at room temperature
FOR BRAINLIST!!!
A Student 1
B Student 2
C Student 3
D Student 4
Answer:
Student 2
Explanation:
I am not 100% sure but I would say Student 2
:)
i agree with the other answer
8. FOR BRAINLIST!!!
Genetic variation describes naturally occurring differences among individuals within
the same population or species. It is based on the differences in the alleles in the
gene pool in a population. These differences--
I think it's either b or c
In which of these two states of matter is water the least dense: solid or liquid?
Answer:
liquid
Explanation:
it is only the thing in what water can disslove
The asthenosphere flows because of
Compare and contrast the behavior of the food coloring and the floating pieces of paper before and after adding heat to the system. What caused the changes you observed
Answer:
the answer is c
Explanation:
Answer:
Im doing this rn :0, look at explanation ill try to help
Use different words
Have a great day!
pls give brainliest and hit the heart if this helped :3
Explanation:
The changes I observed are that when you do not use hot water, the food coloring stays at the bottom and doesn't spread to the top, but when I do use food coloring, it spreads everywhere in the water. I don't know what caused the changes I observed, but I think its because heating food coloring does something to it to make it spread, maybe hotter liquids spread faster?
I need to know why the particles at the surface in the image below have surface tension while the particles below the surface do not.
C2H6 + Cl* => C2H5* + HCl
Answer:
C2H6 + Cl → C2H5 + HCl
equation is balanced
Why is boiling water a physical change
Answer:
it is cleaning the water and heating it
Answer:
When boiling the water, the water will begin to evaporate and thats the physical change.
PLEASE HELP What's the mass in grams of 0.442 moles of calcium bromide, CaBr2? The atomic
weight of Ca is 40.1 and the atomic weight of Br is 79.9.
A) 452.3 g
B) 53.04 g
C) 44.2 g
D) 88.4 g
Answer: Thus there are 88.4 g of calcium bromide.
Explanation:
According to avogadro's law, 1 mole of every substance weighs equal to the molecular mass and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
Molar mass of = 40.1 (1)+ 2(79.9) = 199.9
To calculate the moles, we use the equation:
[tex]\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}[/tex]
[tex]0.442=\frac{x}{199.9}[/tex]
[tex]x=88.4g[/tex]
Thus there are 88.4 g of calcium bromide.