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jeyben [28]
3 years ago
15

In science class, Jake mixed water with differing amounts of an unknown liquid. After mixing the liquids, he heated 20 millilite

rs (ml) of each mixture and observed how quickly it boiled. The table shows his results.​

Chemistry
1 answer:
Snowcat [4.5K]3 years ago
7 0

Answer:

decrease i had the same question in 8th grade u must be in ninth

Explanation:

ohh im not sure but i think its A

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this is so CONFUSING WTH anyone kind to help with those two questions just answer how much you know, I’ll still brainlist it’s u
Ganezh [65]

Answer:

4. mutualism - both benefit

5. Commensalism- one benefits while the other is not affected

"Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefited while the other species is not affected."

3 0
2 years ago
In a particular reaction, 53.8 g of liquid silicon tetrachloride is added to 65.0 g of solid magnesium to produce solid magnesiu
kotykmax [81]

Answer: Mg is the excess reactant for the forward reaction.

Explanation: It is a stoichiometry problem and solved with the help of given grams and using balanced equation. Grams of both the reactants are converted to moles and divided by their coefficients. The excess reactant is the one for which we get the highest number on doing above steps.

The balanced equation is:

SiCl_4(l)+2Mg(s)\rightarrow 2MgCl_2(s)+Si(s)

Molar mass of silicon tetra chloride is 169.9 gram per mol and the molar mass of Mg is 24.3 gram per mol.

53.8gSiCl_4(\frac{1mol}{169.9g})

= 0.317molSiCl_4

65.0gMg(\frac{1mol}{24.3g})

= 2.67 mol Mg

From balanced equation, the coefficient of silicon tetra chloride is 1 and that of Mg is 2. So, we will divide the moles of silicon tetra chloride by 1 and that of Mg by 2 and see which one gives highest number.

For silicon tetra chloride, \frac{0.317}{1}  = 0.317

and for Mg, \frac{2.67}{2}  = 1.34

The highest number is for Mg and so the excess reactant for the forward reaction is Mg.

7 0
3 years ago
In the artice, "As Sticky as a Gecko...but Ten
ra1l [238]

Answer:

The adhesive is made up of two different layers.

The lower layer is made up of vertically aligned nanotubes.

The upper layer is made up of curly, spaghetti-like, nanotubes.

6 0
2 years ago
Read 2 more answers
What is Catenation in chemistry?​
Eddi Din [679]

Answer:

In chemistry, catenation is the bonding of atoms of the same element into a series, called a chain. A chain or a ring shape may be open if its ends are not bonded to each other, or closed if they are bonded in a ring

Explanation:

5 0
3 years ago
Read 2 more answers
3. What is the mass of 5 moles of Hydrogen sulfate?I
solong [7]

Answer:

490

98 for 1 mole, Hence for 5 moles 5 X 98 =490.

Explanation:

Brainliest please?

3 0
3 years ago
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