Chemistry High School

3 A student investigates how the concentration of an acid affects the speed of reaction with a 0.5
D filtration
mass of magnesium at 30°C.
The student has a beaker, concentrated acid, water and the apparatus below.
P a balance
Qa dock
R a measuring cylinder
S a thermometer
Which pieces of apparatus does the student use?
A P, Q and R only
B P, Q and S only
C Q, R and S only
DP, Q, R and S

Answers

Answer 1

Answer:

C Q, R and S only.

Thermometer: for measuring temperature.

Measuring cylinder: for measuring accurate volume used in standardization during determination of concentration.

dock: for holding solutions

Related Questions

What is the momentum of a bird with a mass of 2 kg flying at 9 m/s? *

Answers

Answer:

18 kg.m/s

Explanation:

The momentum of an object can be found by using the formula

momentum = mass × velocity

From the question we have

momentum = 2 × 9

We have the final answer as

18 kg.m/s

Hope this helps you

which description shows copper at rtp?
a) stationary and closed together
b) stationary and randomly arranged
c)vibrating and in a regular arrangement
d) vibrating and in a random arrangement
​

Answers

Answer:

c)vibrating and in a regular arrangement

Explanation:

Copper is a chemical element represented by the symbol Cu and having atomic number 29. Copper is a transition metal which means its subshells are not completely filled and that is why they are vibrating in the room temperature. But copper is a solid at room temperature with regular arrangement of atoms.

Hence, the correct answer is "c)vibrating and in a regular arrangement".

What types of radiation cause the parent isotope to change into a different element?

Answers

Answer:

Beta decay is most common in elements with a high neutron to proton ratio. Gamma decay follows the form: In gamma emission, neither the atomic number or the mass number is changed. A high energy gamma ray is given off when the parent isotope falls into a lower energy state.

Explanation:

pls mark me as brainliest

EZ MODE -_- What could you do in an experiment to get more accurate results?  Change two of your variables. Only make observations that involve sight. Only use new materials. Perform repeated trials​

Answers

Answer:

they change the object hehehehe

Answer:

D. Perform repeated trials.

Explanation:

I did the exam and got it correct :D!

Based on the information in the table, which two elements are most likely in the same group, and why?

Answers

The answer would be Bismuth and Nitrogen because they have the same number of valence electrons. Groups in the periodic table are arranged in columns. When it comes to neutral atoms, the number of valence electrons it has is equal to the main group of that element.

Where must you be standing if the Sun appears to be directly overhead at noon?
O A. At the South Pole
O B. At the North Pole
O C. At a point somewhere along the prime meridian
O D. At a point somewhere along the equator​

Answers

Answer:

D

Explanation:

at a point somewhere along the equator

In the case when the Sun appears to be directly overhead at noon should be along with the equator.

What is the equator?

It is considered to be the imaginary line that should be arounded with the middle of the planet or the celestial body. It is halfway that lies between the  North Pole and the South Pole, at 0 degrees latitude. In the equator, it divides the planet into a Northern Hemisphere and a Southern Hemisphere

Therefore, based on the above explanation, the option d is correct.

Learn more about sun here: https://brainly.com/question/20827000

What happens when the number of electrons and protons inside of an atom are Not equel?

Answers

Hello, It's me Moriah Elizabeth!

Answer:

When the number of electrons does not equal the number of protons, the atom is ionized.


Which formula compares a sample of a gas under two different conditions of pressure and volume, if the temperature is constant?

⚪︎ x/y = k
⚪︎ xy = k
⚪︎ PV = k
⚪︎ V/T = k
⚪︎ P1V1 = P2V2

Answers

Answer:

Explanation:

V/t

atoms or helium nickel would represent _____

Answers

Answer:

they represent their own atoms

Answer:

Elements

Explanation:

Help me asap it’s for my chem

Answers

1 is oxygen
2 is c=1 O=2
3 is 10
4 is 4 C 12 H
5 is 4 Na 2S 8 O
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To amend title 14, United States Code, to require the Coast Guard to conduct icebreaking operations in the Great Lakes to minimize commercial disruption in the winter months, and for other purposes.IN THE SENATE OF THE UNITED STATESSeptember 15, 2020Ms. Baldwin (for herself, Mr. Young, and Mr. Peters) introduced the following bill; which was read twice and referred to the Committee on Commerce, Science, and TransportationA BILLTo amend title 14, United States Code, to require the Coast Guard to conduct icebreaking operations in the Great Lakes to minimize commercial disruption in the winter months, and for other purposes.Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled,SECTION 1. SHORT TITLE.This Act may be cited as the Great Lakes Winter Commerce Act of 2020.SEC. 2. 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