Answer:
Francium
Explanation:
I really don't know how to explain this
*URGENT*
What subatomic particle determines the type of element? *
Electron
Neutron
Proton
Mass number
Answer:
Protons
Explanation:
Forming the nucleus are two kinds of particles: protons, which have a positive electrical charge, and neutrons, which have no charge. All atoms have at least one proton in their core, and the number of protons determines which kind of element an atom is. For example, an oxygen atom has 8 protons.
Sidenote: Hope this helps! :D
Robert Hooke was the first scientist to give the cell a name. Which statement is true about him?
a)H e looked at an onion skin with his naked eyes to see cells.
b)He invented the microscope.
c)Under the microscope he observed box-like compartments of cork tree bark.
d)He used the microscope to observe skin cells.
Answer:
The answer is C
Explanation:
Can you mark me the Brainliest it helps a lot
You mix two cleaning chemicals and they start bubbling and releasing a funny smelling gas. First, run because it is poisonous! Second, was that a physical or chemical change? How do you know?
Answer:
it's a chemical change
Explanation:
When two different chemical substances are mixed they are no longer the same and can not be changed back so therefore it's a Chemical reaction.
What is similar and different about a barometer and a thermometer?
Please don´t type random stuff, this is for a grade that's weighted really heavily.
Answer: there both a meter but there different things
Explanation:
State three reasons why an airborne pollutant might be deposited close to its source
Answer:
No wind
Rain
I only came up with 2 I couldnt think of a third one
If an airborne pollutant is brought to the ground by rain or snow, it will be deposited closer to its source. This is due to the fact that the chemicals must be discharged nearby the source or captured in a cloud that would then transfer them.
What are pollutants?Pollutants are substances which causes pollution to the atmosphere or hydrosphere. There are many types of airborne pollutants such as gaseous products from burning of fossil fuels.
Oxides of nitrogen and sulfur and some hydrocarbons are the main airborne pollutants. They can be easily condensed because of the atmospheric humidity.
The deposition of these pollutants also depends on the wind, temperature and diffusion rate of these gases. If the diffusion rate is less for the gas and the temperature is lower, they will deposit at the sources.
To find more on pollutants, refer here:
https://brainly.com/question/16101020
#SPJ5
HELP! A bone contains 6.25% of Carbon -14 it began with. How old is the bone ?
Answer:
6.25 yrs
Explanation:
To make a smoothie, Moira added 320 grams of water to 80 grams of oatmeal, 100 grams of mango, and some protein powder. If the smoothie weighed 520 grams, how much protein powder did she add?
200 grams
20 grams
3 grams
430 grams
Answer:
20
Explanation:
add the numbers except 520 then subtract that from 520
A normal protein has 300 or more amino acids, and each protein has a different ratio and order of amino acids.
What is meant by protein?Large biomolecules and macromolecules known as proteins are made up of one or more extended chains of amino acid residues.
(PROH-teen) a structure composed of amino acids. The body need proteins to function properly. They serve as the building blocks for several bodily components, including the skin, hair, and enzymes, cytokines, and antibodies.
Numerous distinct amino acids are bonded together to form proteins. These twenty distinct amino acid building blocks are widely distributed in both plants and animals. A normal protein has 300 or more amino acids, and each protein has a different ratio and order of amino acids.
Therefore, the correct answer is option b) 20 grams.
To learn more about Protein refer to:
https://brainly.com/question/10058019
#SPJ2
(06.01 LC)
It was observed that the particles of an unknown substance slide past one another. What is the state of matter of the substance? (1 point)
Solid
Liquid
Gas
Plasma
The liquid is the state of matter of the substance. Hence, option B is correct.
What is a state of matter?A “state of matter” is a way to describe the behaviour of atoms and molecules in a substance.
In a liquid state of matter, particles are less tightly packed as compared to solids. Liquids take the shape of the container in which they are kept. Liquids are difficult to compress as particles have less space between them to move. Liquids have fixed volume but no fixed shape.
Hence, option B is correct.
Learn more about the state of the matter here:
https://brainly.com/question/9402776
#SPJ2
PLZ answer as fast as you can I need it asap!
An ecosystem is the _____________________ between the abiotic and ____________ factors in an area.
Question 3 options:
A)Balance, biotic
B)Competition, biotic
C)Interaction, nonliving
D)Interaction, biotic
Answer:
D) Interaction, Biotic
An ecosystem is the interaction between the abiotic and biotic factors in an area.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the ecosystem through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil. There are different ecosystems present in the world.
Learn more about ecosystem,here:
https://brainly.com/question/1673533
#SPJ6
As the amount of salt in water increases, the___________ of the water increases.
1. temperature
2. humidity
3. density
4. size
Answer:
3
Explanation:
As the amount of salt in water increases, the density of the salt water increases. The more the particles of the in water being added to the total mass and thus increases the density.
What is density ?Density of a substance is the measure of its mass by volume. It describes how closely packed its particles are. The density of a substance depends on the bond type, pressure and temperature.
The density of pure water is 1 g/ml. However, when salt is added to water it becomes denser since the mass of the solution changes from that of water.
Hence, more the salinity of the salt solution, more denser it is. Because, amount of salt is contributing to the total mass. Therefore, As the amount of salt in water increases, the density of the salt water increases.
Find more on density :
https://brainly.com/question/15164682
#SPJ6
HEELLPP PLEASE IM BEGGING ILL GIVE BRAINLIEST
Vegetable soup is an example of _____________:
A. an element
B. a compound
C. a mixture
D. a chemical reaction
Answer:
C
Explanation:
You mix different thing together to make a new thing.
A tool might be made of an alloy because the alloy _____.
A. occurs naturally
B. resists rust
C. can bend easily
D. is softer
Your answer is:
B. Resists rust.
A tool might be made of an alloy because the alloy resists rust.
Why?
Iron is a great building material but steel (an alloy made by adding small amounts of non-metallic carbon to iron) is stronger, harder, and rustproof. Aluminum is a very light metal but it's also very soft in its pure form.
Alloy steels have a wide range of special properties, such as hardness, toughness, corrosion resistance, magnetizability, and ductility. Nonferrous alloys, mainly copper–nickel, bronze, and aluminum alloys, are much used in the coinage.
____________________________________________________________
Hope this helps!
⊕If this answer does not answer your question or displeases you, tell me in the comments and I will try to find the right answer and replace it ASAP. Thank you.⊕
Have a good day.Offspring, or young, ______ to look like their parents, but are ___ the ________.
PLLLLELELELELELLEXZZZZZZZAnsnnsnsnwnnwWEDDRFRFRRFR PLSSSSXSSSXD
Answer:
Tend. Similar. Parents. (sorry if it's wrong. It's kinda confusing on the last 2 words. Make it more clearer pls to get a better answer)
Explanation:
HELP PLEASEE ITS ALREADY PAST DUE I NEED THIS
Which activity is an example of a chemical change?
A. dissolving table salt in water
B. melting gold to make jewelry
C. hammering aluminum into thin sheets
D. burning wood to produce ashes
i think its b because yeah
The density of Mg is 1.74g/cm3. The density of strontium is 2.60g/cm3. What would you expect the density of Ca to be?
Answer:
1.61 g/cm³.
Explanation:
What is the reactants start for H2 + O2 --> H2O
Answer:
H2 + O2
Explanation:
H2 + O2 --> H2O
The items on the left side is the reactants. The arrow means yields, and the item the arrow is pointing at is the product.
Answer:
h²0
Explanation:
I'm sorry , id ask g00gle