Answer:
Tara does not think that Victor’s predictions are likely.
Explanation:
In order to submit the paper, he would need to be as accurate as he possible can, is Tara told him to do it again, it means that he may have made a few mistakes.
what is the reaction type?
Answer:single displacement reaction
Explanation:
Where is the color rock located?
Someone please help me!!
Explanation: D and G
The work needed to operate a machine is called work output
O True
O False
concentrations
1) calculate the mass of sucrose and the mass of water (in grams) that must be used to prepare 400 g of 50% by mass of sucrose solution. since a solvent is present in greater proportion than the solute in a solution, do these terms still apply at 50% by mass concentration? why?
2) if a wine sample is 12.0% by volume ethanol, how many milliliters of ethanol is present in a bottle containing 500.0 mL of the wine? if other alcoholic drinks have relatively high concentration 35 to 50% (v/v) ethanol, is wine safer to drink before driving? why?
3) a pancake recipe recommends a 65% (v/v) sugar syrup concentration. if you wish to prepare the recipe and you only have 50 g of sugar at home, how will you prepare the syrup? if based on the recipe, one pancake will need 5 mL of the syrup, how many pancakes should you make to use all the syrup you made?
pls help >.
Answer:
The glucose concentration is measured in mM, the abbreviation for "milliMolar". The molar (M) concentration of a solution is a measure of how much solute (the component of a solution present in lesser amount, often a solid) there is in a given volume of solution. After swirling the flask to dissolve the solid, water is added carefully until the bottom of the meniscus coincides with the calibration mark on the neck of the flash.
which statement describes effusion
Answer:
It occurs when a gas passes through a tiny hole.
Answer:
Effusion is a term used to describe when a gaseous molecule in a container passes or escapes through a tiny/small hole. Effusion and diffusion are two properties of gases that are often used interchangeably, however, they differ.
Explanation:
Have a great day :)
22. It takes sunlight 8 minutes to reach the Earth. Calculate how long it takes sunlight to reach
Neptune?
Answer:
33. 8
Explanation:
Upon balancing the equation what is the smallest possible integers that goes in front O₂? HBr + O₂ ➞ H₂O + Br₂ *
4 points
1
2
3
4
Answer:
1
Explanation:
4 HBr + O2 → 2H 20 + 2Br 2
...............
Calculate the number of atoms in 2.5 moles of Si.
Answer:
[tex]\boxed {\boxed {\sf About \ 1.5 * 10^{24} \ atoms \ Si}}[/tex]
Explanation:
When converting from moles to atoms, we must use Avogadro's number. This number tells us there are 6.022 * 10²³ atoms in 1 mole. We can multiply this number by the number of moles.
First, we must set up Avogadro's number as a ratio.
[tex]\frac {6.022 \ * 10^{23} \ atoms \ Si }{1 \ mol \ Si}}[/tex]
Next, multiply the number of moles by the ratio.
[tex]2.5 \ mol \ Si *\frac {6.022 \ * 10^{23} \ atoms \ Si }{1 \ mol \ Si}}[/tex]
When we multiply, the moles of silicon will cancel.
[tex]2.5 * \frac {6.022 \ * 10^{23} \ atoms \ Si }{1}}[/tex]
Since the denominator of the fraction is 1, we can cancel it out too.
[tex]2.5 * {6.022 \ * 10^{23} \ atoms \ Si }[/tex]
[tex]1.5055 * 10^{24} \ atoms \ Si[/tex]
The original measurement (2.5 moles) has 2 significant figures (2 and 5). Therefore we must round to 2 sig figs. For this question, 2 sig figs is the tenth place.
The 0 in the hundredth place tells us to leave the 5 in the tenth place.
[tex]1.5 * 10^{24} \ atoms \ Si[/tex]
There are about 1.5 * 10²⁴ atoms of silicon.
energy transfer by electromagnetic waves
Answer:
Radiation is the transfer of heat energy through space by electromagnetic radiation.
Explanation:
Radiation is the transfer of heat energy through space by electromagnetic radiation. Most of the electromagnetic radiation that comes to the earth from the sun is in the form of visible light. Light is made of waves of different frequencies.
100 POINTS PLEASE HELP!!! ASAP!!!! CORRECT ANSWER GETS BRAINLIEST
Two different white solids can be partially identified by physical properties and bonding type. Name three tests that could be conducted to help determine the bonding type of the solid compounds.
If a substance has a relatively low melting point (below 400ºF), then it is either molecular polar or molecular non-polar
If a substance has a high melting point, then it is either metallic, covalent network, or ionic
The stronger a substance’s bonds, the higher its melting point
(will mark brainliest) pls don’t scam - due today! these are my last points please answer
Answer:
A
Explanation:
It's know things
Answer:
Gregor mendel
Explanation:
He is considered by most the father of gentics