tedisaac21 tedisaac21

Today at 8:27 PM
Physics

Answered

One classic chemistry experiment involves the reaction of hydrochloric acid and magnesium ribbon. A small piece of magnesium ribbon is placed in a test tube and hydrochloric acid is added to cover the magnesium. Students observe that the test tube gets hot, a gas (bubbles) is produced, and when a lit match is inserted in the mouth of the test tube, a loud "bark" is heard. This reaction is represented by the equation: Mg + 2HCl → MgCl2 + H2 The reaction can be described as both a _ reaction and a(n) reaction.

A) synthesis; endothermic
B) neutralization; exothermic
C) decomposition; neutralization
D) single replacement; exothermic

Answer :

Kenjelica Kenjelica

Today at 8:32 PM

D, single replacement and exothermic. Single replacement because chlorine switches over to magnesium, exothermic because the reaction releases energy, evidenced by the test tube getting hot and the bark that's heard.

Answer Link

Other Questions

A lake that is used as a water source receives a lot of acid rain one year. Which of the following is an impact this will have?(1 point) The lake water will hav

Jacinta borrowed sh. 100,000 from her cooperative society. She pays 1% interest of the outstanding balance every month. If she pays sh. 10,000 plus interest eve

Which decimal is equivalent to 2/9?

In a fictional text, an ellipsis is most likely used for which purpose? (1 point) a to indicate an omission b to show that a new scene is beginning c to show th

Which decimal is equivalent to 2/9?

Find area of rhombus whose diagonal area 8 and 14

There are 54 balls in first box and 179 balls in the second box. Estimate the total number of balls in both the boxes using the general rule.

· Discuss the religious and spiritual developments of the medieval period in detail.

a partice of mass m strikes elastically on a wall with velocity v , at an angle of 60° from the wall then magnitutude change in momentum of ball along the wall

What is mensuntral cycle??

Last week you stayed with a friend for a few days, but now you're home again. Write a 'thank you' letter to your friend. Use the following ideas and the letter

To make sure my numbers were correct, I consulted three peer-reviewed journals and a professor at Harvard who has a PhD on the topic. A. Ethos B. Bias C. Pathos

The points H, I, J and K all lie on the same line segment, in that order, such that the ratio of HI: IJ: JK is equal to 3: 4: 3. If HK = 50, find JK.

the denominator of a fraction exceeds the numerator by 25 the value of the fraction is 3/8

Find the area of the shaded figure. H 1 2 3 4 5 6 7 8 9 10 11 12 987654321 ?] square units

What format or type of writing are you to create? Narrative essay Who is your audience? The teacher What topic are you to write about? My experience and identif

the number of degrees in an angle exceeds 14 times the number of radians in it by 51.find the sexagesimal measure of angle

What is decrease £20 by 15%

Please match the following 1. Parliament allowed to pass any laws 2. surrendered at Yorktown 3. favored Constitution 4. result of Stamp Act 5. ships had to be E

A certain state uses the following progressive tax rate for calculating individual income tax: Income Progressive Range ($) Tax Rate 0 - 10,000 3% 10,001 - 50,0