3 years ago

What change occurs to food by your teeth as you chew ?

Chemistry

2 answers:

MrRissso [65]3 years ago

5 0

Answer:

Food gets broken down.

Explanation:

The teeth cut and help crush the food in our mouths while mixing it with saliva. This helps make it easier to swallow and digest.

labwork [276]3 years ago

5 0

Well there’s different ways to explain

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Lewis structure of graphite

Andreas93 [3]

Its a C with 4 dots, 1 on top,1 on bottom, 1 on the left and 1 on the right

6 0

3 years ago

How much heat is released when 1.4 mol of hydrogen fluoride are produced? H2(g) +F2(g) → 2HF(g) +536kJ (Please show work)

polet [3.4K]

Answer:

375.2 kJ

Explanation:

H₂(g) +F₂(g) → 2HF(g) +536kJ

The information the equation above provides lets us know that when 2 mol of hydrogen fluoride (HF) are produced, 536 kJ of energy (as heat) is produced.

We can then state a rule of three:

2 mol HF -------- 536 kJ

1.4 mol HF --------- X

And solve for X:

X = 1.4 mol * 536 kJ / 2 mol

X = 375.2 kJ

7 0

3 years ago

Calculate the speed. 1. If a car travels 800m in 30 seconds how fast is it going?

Alex787 [66]

Answer:

s = 26.7 m/s

Explanation:

Given data:

Distance travel = 800 m

Time taken = 30 sec

Speed of car = ?

Solution:

Formula:

S = d/t

s = speed

d = distance

t = time

by putting values.

s = 800 m/ 30 s

s = 26.7 m/s

4 0

2 years ago

Convert 150 g/L to the unit g/mL.

inn [45]

The correct answer is C 0.15 g/mL.

4 0

3 years ago

Which equations represent precipitation reactions? More than one can be chosen.

Ymorist [56]

Answer is:

A. Na₂S + FeBr₂ → 2NaBr + FeS.

B. MgSO₄ + CaCl₂ → MgCl₂ + CaSO₄.

E. AgNO₃ + NaCl → AgCl + NaNO₃.

Iron sulfide (FeS) has low solubility in water.

Calcium sulfate (CaSO₄) has low solubility in water and it will form white precipitate.

Silver chloride (AgCl) has low solubility in water and it will form white precipitate.

6 0

3 years ago

Read 2 more answers