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3 years ago

Which of the following SI or metric units is a base unit?

Chemistry

1 answer:

Olin [163]3 years ago

8 0

3. Ampere is the base unit for electric current.

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Based on the balanced chemical equation for the preparation of malachite, what is the composition of the bubbles formed when sod

spin [16.1K]

Answer:

Carbon Dioxide = CO2

Explanation:

The synthesis of Malachite is seen in the chemical formula:

CuSO 4 . 5H2O(aq) + 2NaCO3(aq) --> CuCO 3 Cu(OH) 2 (s) + 2Na 2 SO 4 (aq) + CO 2 (g) + 9H 2 O(l)

The bubbles mentioned in the question hints that our interest is the compounds in their gseous phase (g).

Upon examining the chemical equation, only CO2 is in the gaseous state and hence the only one that can be formed as bubbles,

3 0

3 years ago

When Xavier places his hands near a light bulb, he notices that certain areas around the light bulb are warmer than others.

Artemon [7]

Answer:

because of conduction. The areas to the sides of the light bulb are warmest because of convection. The area directly above the light bulb is warmest because of conduction. The area directly above the light bulb is warmest because of convection

6 0

2 years ago

Which process represents a chemical change?(1) melting of ice(2) corrosion of copper(3) evaporation of water(4) crystallization

miskamm [114]

(2) Corrosion of copper.
Mark best answer

3 0

3 years ago

Let P and V represent the pressure and volume of the Xe(g) in the container in diagram 3. If a piston is used to reduce the volu

Reil [10]

Answer:

Explanation:

To solve this question, we can use Boyle's Law, which states that:

"For a fixed mass of an ideal gas kept at constant temperature, the pressure of the gas is inversely proportional to its volume"

Mathematically:

$p\propto \frac{1}{V}$

where

p is the pressure of the gas

V is its volume

The equation can be rewritten as

$p_1 V_1 = p_2 V_2$

where in this problem we have:

$p_1 = p$ is the initial pressure of the Xe(g) gas

$V_1=V$ is the initial volume of the Xe(g) gas

$V_2=\frac{V}{2}$ is the final volume of the Xe(g) gas

Solving for p2, we find the final pressure of the gas:

$p_2=\frac{p_1 V_1}{V_2}=\frac{pV}{V/2}=2p$

So, the final pressure is twice the initial pressure.

7 0

3 years ago

Linolenic acid has cis double bonds with the formula ch3ch2ch=chch2ch=chch2ch=ch(ch2)7cooh. write out the abbreviated systematic

valentinak56 [21]

<span>Abbreviated systematic numbering for Linolenic Acid is,

18:3, n-3
Explanation:
In above abbreviation 18 specifies number of carbon atoms in Linolenic Acid, 3 specifies the number of double bonds and n-3 specifies the position of first double bond from methyl end. The structure of Linolenic Acid is as follow,</span>

3 0

3 years ago